./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/memory-model/4SB.i --full-output --preprocessor.use.memory.slicer false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/memory-model/4SB.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 15b0cbd6c91287c392a1dcce1e0a32a1c72d5f0acdee848dea776c36b74cf850 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 21:01:57,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 21:01:57,709 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 21:01:57,716 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 21:01:57,717 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 21:01:57,742 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 21:01:57,743 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 21:01:57,743 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 21:01:57,743 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 21:01:57,748 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 21:01:57,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 21:01:57,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 21:01:57,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 21:01:57,750 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 21:01:57,750 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 21:01:57,750 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 21:01:57,751 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 21:01:57,751 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 21:01:57,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 21:01:57,751 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 21:01:57,751 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 21:01:57,752 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 21:01:57,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 21:01:57,752 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 21:01:57,752 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 21:01:57,752 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 21:01:57,753 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 21:01:57,753 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 21:01:57,753 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 21:01:57,754 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 21:01:57,754 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 21:01:57,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 21:01:57,755 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 21:01:57,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 21:01:57,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 21:01:57,755 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 21:01:57,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 21:01:57,755 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 21:01:57,756 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 21:01:57,756 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 21:01:57,756 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 21:01:57,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 21:01:57,756 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15b0cbd6c91287c392a1dcce1e0a32a1c72d5f0acdee848dea776c36b74cf850 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 21:01:58,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 21:01:58,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 21:01:58,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 21:01:58,032 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 21:01:58,032 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 21:01:58,033 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memory-model/4SB.i [2023-11-22 21:01:59,092 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 21:01:59,318 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 21:01:59,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/memory-model/4SB.i [2023-11-22 21:01:59,326 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d2ee6407/08087e41eb0646328d351a50699d4478/FLAGf1bb90104 [2023-11-22 21:01:59,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d2ee6407/08087e41eb0646328d351a50699d4478 [2023-11-22 21:01:59,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 21:01:59,339 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 21:01:59,340 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 21:01:59,340 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 21:01:59,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 21:01:59,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:01:59" (1/1) ... [2023-11-22 21:01:59,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@666f72d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:01:59, skipping insertion in model container [2023-11-22 21:01:59,345 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:01:59" (1/1) ... [2023-11-22 21:01:59,367 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 21:01:59,547 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/memory-model/4SB.i[21105,21118] [2023-11-22 21:01:59,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 21:01:59,558 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 21:01:59,652 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/memory-model/4SB.i[21105,21118] [2023-11-22 21:01:59,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 21:01:59,664 INFO L206 MainTranslator]: Completed translation [2023-11-22 21:01:59,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:01:59 WrapperNode [2023-11-22 21:01:59,665 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 21:01:59,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 21:01:59,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 21:01:59,666 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 21:01:59,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:01:59" (1/1) ... [2023-11-22 21:01:59,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:01:59" (1/1) ... [2023-11-22 21:01:59,785 INFO L138 Inliner]: procedures = 28, calls = 671, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1598 [2023-11-22 21:01:59,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 21:01:59,786 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 21:01:59,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 21:01:59,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 21:01:59,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:01:59" (1/1) ... [2023-11-22 21:01:59,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:01:59" (1/1) ... [2023-11-22 21:01:59,827 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:01:59" (1/1) ... [2023-11-22 21:01:59,829 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:01:59" (1/1) ... [2023-11-22 21:01:59,901 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:01:59" (1/1) ... [2023-11-22 21:01:59,918 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:01:59" (1/1) ... [2023-11-22 21:01:59,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:01:59" (1/1) ... [2023-11-22 21:01:59,926 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:01:59" (1/1) ... [2023-11-22 21:01:59,934 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 21:01:59,948 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 21:01:59,949 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 21:01:59,949 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 21:01:59,950 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:01:59" (1/1) ... [2023-11-22 21:01:59,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 21:01:59,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:00,009 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) [2023-11-22 21:02:00,020 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 [2023-11-22 21:02:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_4_conditions [2023-11-22 21:02:00,046 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_4_conditions [2023-11-22 21:02:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2023-11-22 21:02:00,047 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2023-11-22 21:02:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2023-11-22 21:02:00,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2023-11-22 21:02:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2023-11-22 21:02:00,047 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2023-11-22 21:02:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2023-11-22 21:02:00,047 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2023-11-22 21:02:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-22 21:02:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 21:02:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-22 21:02:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-22 21:02:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 21:02:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2023-11-22 21:02:00,048 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2023-11-22 21:02:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2023-11-22 21:02:00,049 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2023-11-22 21:02:00,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 21:02:00,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 21:02:00,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 21:02:00,217 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 21:02:00,218 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 21:02:01,957 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 21:02:01,994 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 21:02:01,994 INFO L309 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-22 21:02:01,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:02:01 BoogieIcfgContainer [2023-11-22 21:02:01,995 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 21:02:01,996 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 21:02:01,996 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 21:02:01,999 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 21:02:01,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:01:59" (1/3) ... [2023-11-22 21:02:01,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331f5d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:02:01, skipping insertion in model container [2023-11-22 21:02:01,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:01:59" (2/3) ... [2023-11-22 21:02:02,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331f5d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:02:02, skipping insertion in model container [2023-11-22 21:02:02,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:02:01" (3/3) ... [2023-11-22 21:02:02,001 INFO L112 eAbstractionObserver]: Analyzing ICFG 4SB.i [2023-11-22 21:02:02,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 21:02:02,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 21:02:02,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 21:02:02,049 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@4108a6b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 21:02:02,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 21:02:02,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 228 states have (on average 1.6271929824561404) internal successors, (371), 233 states have internal predecessors, (371), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-22 21:02:02,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:02,062 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:02:02,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:02,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:02,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1746438521, now seen corresponding path program 1 times [2023-11-22 21:02:02,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:02,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116327905] [2023-11-22 21:02:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:02,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:02,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 21:02:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:02,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-22 21:02:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:02,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:02:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:02,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 21:02:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:02,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:02:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:02,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 21:02:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 21:02:03,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:03,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116327905] [2023-11-22 21:02:03,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116327905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:03,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:02:03,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 21:02:03,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760007964] [2023-11-22 21:02:03,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:03,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:02:03,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:03,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:02:03,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 21:02:03,086 INFO L87 Difference]: Start difference. First operand has 263 states, 228 states have (on average 1.6271929824561404) internal successors, (371), 233 states have internal predecessors, (371), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:05,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:05,658 INFO L93 Difference]: Finished difference Result 527 states and 857 transitions. [2023-11-22 21:02:05,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 21:02:05,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 64 [2023-11-22 21:02:05,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:05,668 INFO L225 Difference]: With dead ends: 527 [2023-11-22 21:02:05,670 INFO L226 Difference]: Without dead ends: 254 [2023-11-22 21:02:05,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 21:02:05,681 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 2 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:05,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 890 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-22 21:02:05,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-22 21:02:05,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 252. [2023-11-22 21:02:05,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 218 states have (on average 1.334862385321101) internal successors, (291), 222 states have internal predecessors, (291), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:05,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 343 transitions. [2023-11-22 21:02:05,738 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 343 transitions. Word has length 64 [2023-11-22 21:02:05,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:05,738 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 343 transitions. [2023-11-22 21:02:05,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:05,739 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 343 transitions. [2023-11-22 21:02:05,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-22 21:02:05,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:05,741 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:02:05,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 21:02:05,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:05,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:05,742 INFO L85 PathProgramCache]: Analyzing trace with hash -220349156, now seen corresponding path program 1 times [2023-11-22 21:02:05,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:05,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598447530] [2023-11-22 21:02:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:05,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:05,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:05,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 21:02:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:06,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 21:02:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:06,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 21:02:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:06,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:02:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:06,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-22 21:02:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 21:02:06,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:06,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598447530] [2023-11-22 21:02:06,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598447530] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:06,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376037898] [2023-11-22 21:02:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:06,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:06,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:06,197 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) [2023-11-22 21:02:06,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 21:02:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:06,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 21:02:06,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-22 21:02:06,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:06,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376037898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:06,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:06,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 21:02:06,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131573558] [2023-11-22 21:02:06,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:06,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:02:06,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:06,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:02:06,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:06,595 INFO L87 Difference]: Start difference. First operand 252 states and 343 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 21:02:07,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:07,789 INFO L93 Difference]: Finished difference Result 500 states and 685 transitions. [2023-11-22 21:02:07,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:02:07,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2023-11-22 21:02:07,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:07,791 INFO L225 Difference]: With dead ends: 500 [2023-11-22 21:02:07,791 INFO L226 Difference]: Without dead ends: 253 [2023-11-22 21:02:07,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:07,792 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 0 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:07,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 652 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-22 21:02:07,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-22 21:02:07,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2023-11-22 21:02:07,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 219 states have (on average 1.3333333333333333) internal successors, (292), 223 states have internal predecessors, (292), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:07,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 344 transitions. [2023-11-22 21:02:07,805 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 344 transitions. Word has length 66 [2023-11-22 21:02:07,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:07,805 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 344 transitions. [2023-11-22 21:02:07,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 21:02:07,805 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 344 transitions. [2023-11-22 21:02:07,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-22 21:02:07,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:07,808 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:02:07,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 21:02:08,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:08,029 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:08,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:08,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2083683684, now seen corresponding path program 1 times [2023-11-22 21:02:08,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:08,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042178896] [2023-11-22 21:02:08,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:08,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:08,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:08,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:08,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:08,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:08,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 21:02:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-22 21:02:08,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:08,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042178896] [2023-11-22 21:02:08,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042178896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:08,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065875425] [2023-11-22 21:02:08,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:08,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:08,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:08,477 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) [2023-11-22 21:02:08,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 21:02:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:08,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 21:02:08,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-22 21:02:08,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:08,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065875425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:08,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:08,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 21:02:08,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231749074] [2023-11-22 21:02:08,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:08,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:02:08,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:08,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:02:08,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:08,920 INFO L87 Difference]: Start difference. First operand 253 states and 344 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 21:02:10,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:10,105 INFO L93 Difference]: Finished difference Result 490 states and 666 transitions. [2023-11-22 21:02:10,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:02:10,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 70 [2023-11-22 21:02:10,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:10,110 INFO L225 Difference]: With dead ends: 490 [2023-11-22 21:02:10,110 INFO L226 Difference]: Without dead ends: 260 [2023-11-22 21:02:10,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:10,111 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 6 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:10,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 641 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-22 21:02:10,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-22 21:02:10,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 254. [2023-11-22 21:02:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 220 states have (on average 1.3318181818181818) internal successors, (293), 224 states have internal predecessors, (293), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 345 transitions. [2023-11-22 21:02:10,141 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 345 transitions. Word has length 70 [2023-11-22 21:02:10,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:10,142 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 345 transitions. [2023-11-22 21:02:10,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 21:02:10,142 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 345 transitions. [2023-11-22 21:02:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-22 21:02:10,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:10,144 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:02:10,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 21:02:10,347 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,SelfDestructingSolverStorable2 [2023-11-22 21:02:10,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:10,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:10,348 INFO L85 PathProgramCache]: Analyzing trace with hash -492832236, now seen corresponding path program 1 times [2023-11-22 21:02:10,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:10,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608156161] [2023-11-22 21:02:10,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:10,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:10,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:10,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:10,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:10,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:10,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:10,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 21:02:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-22 21:02:10,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:10,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608156161] [2023-11-22 21:02:10,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608156161] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:10,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102983691] [2023-11-22 21:02:10,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:10,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:10,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:10,741 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) [2023-11-22 21:02:10,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 21:02:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:11,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 21:02:11,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-22 21:02:11,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:11,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102983691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:11,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:11,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 21:02:11,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625223708] [2023-11-22 21:02:11,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:11,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:02:11,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:11,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:02:11,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:11,127 INFO L87 Difference]: Start difference. First operand 254 states and 345 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 21:02:12,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:12,528 INFO L93 Difference]: Finished difference Result 483 states and 656 transitions. [2023-11-22 21:02:12,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:02:12,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2023-11-22 21:02:12,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:12,534 INFO L225 Difference]: With dead ends: 483 [2023-11-22 21:02:12,534 INFO L226 Difference]: Without dead ends: 261 [2023-11-22 21:02:12,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:12,535 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 6 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:12,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 640 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-22 21:02:12,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-22 21:02:12,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 255. [2023-11-22 21:02:12,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 221 states have (on average 1.330316742081448) internal successors, (294), 225 states have internal predecessors, (294), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 346 transitions. [2023-11-22 21:02:12,554 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 346 transitions. Word has length 73 [2023-11-22 21:02:12,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:12,554 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 346 transitions. [2023-11-22 21:02:12,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 21:02:12,554 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 346 transitions. [2023-11-22 21:02:12,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-22 21:02:12,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:12,557 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:02:12,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 21:02:12,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:12,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:12,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:12,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1330353132, now seen corresponding path program 1 times [2023-11-22 21:02:12,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:12,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077819011] [2023-11-22 21:02:12,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:12,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:12,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:12,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:12,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:12,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:12,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:13,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 21:02:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-22 21:02:13,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077819011] [2023-11-22 21:02:13,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077819011] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055804090] [2023-11-22 21:02:13,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:13,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:13,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:13,150 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) [2023-11-22 21:02:13,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 21:02:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:13,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 21:02:13,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-22 21:02:13,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:13,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055804090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:13,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:13,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 21:02:13,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769339163] [2023-11-22 21:02:13,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:13,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:02:13,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:13,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:02:13,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:13,608 INFO L87 Difference]: Start difference. First operand 255 states and 346 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 21:02:14,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:14,944 INFO L93 Difference]: Finished difference Result 476 states and 646 transitions. [2023-11-22 21:02:14,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:02:14,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2023-11-22 21:02:14,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:14,946 INFO L225 Difference]: With dead ends: 476 [2023-11-22 21:02:14,946 INFO L226 Difference]: Without dead ends: 262 [2023-11-22 21:02:14,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:14,947 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 6 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:14,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 640 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-22 21:02:14,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-22 21:02:14,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2023-11-22 21:02:14,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 222 states have (on average 1.3288288288288288) internal successors, (295), 226 states have internal predecessors, (295), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:14,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 347 transitions. [2023-11-22 21:02:14,960 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 347 transitions. Word has length 76 [2023-11-22 21:02:14,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:14,961 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 347 transitions. [2023-11-22 21:02:14,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 21:02:14,961 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 347 transitions. [2023-11-22 21:02:14,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-22 21:02:14,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:14,962 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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] [2023-11-22 21:02:14,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-22 21:02:15,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:15,172 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:15,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:15,174 INFO L85 PathProgramCache]: Analyzing trace with hash -215268508, now seen corresponding path program 1 times [2023-11-22 21:02:15,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:15,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999086666] [2023-11-22 21:02:15,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:15,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:15,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:15,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:15,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:15,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:15,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:15,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 21:02:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-22 21:02:15,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:15,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999086666] [2023-11-22 21:02:15,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999086666] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:15,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342285236] [2023-11-22 21:02:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:15,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:15,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:15,635 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) [2023-11-22 21:02:15,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 21:02:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:16,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 21:02:16,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:16,093 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-22 21:02:16,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:16,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342285236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:16,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:16,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 21:02:16,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029719066] [2023-11-22 21:02:16,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:16,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:02:16,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:16,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:02:16,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:16,099 INFO L87 Difference]: Start difference. First operand 256 states and 347 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 21:02:17,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:17,222 INFO L93 Difference]: Finished difference Result 467 states and 635 transitions. [2023-11-22 21:02:17,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:02:17,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 79 [2023-11-22 21:02:17,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:17,224 INFO L225 Difference]: With dead ends: 467 [2023-11-22 21:02:17,224 INFO L226 Difference]: Without dead ends: 263 [2023-11-22 21:02:17,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:17,225 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 6 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:17,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 645 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-22 21:02:17,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-22 21:02:17,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 257. [2023-11-22 21:02:17,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 223 states have (on average 1.3273542600896862) internal successors, (296), 227 states have internal predecessors, (296), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:17,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 348 transitions. [2023-11-22 21:02:17,231 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 348 transitions. Word has length 79 [2023-11-22 21:02:17,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:17,231 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 348 transitions. [2023-11-22 21:02:17,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 21:02:17,231 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 348 transitions. [2023-11-22 21:02:17,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-22 21:02:17,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:17,234 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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] [2023-11-22 21:02:17,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 21:02:17,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:17,448 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:17,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:17,448 INFO L85 PathProgramCache]: Analyzing trace with hash -497201860, now seen corresponding path program 1 times [2023-11-22 21:02:17,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:17,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954682795] [2023-11-22 21:02:17,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:17,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:17,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:17,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:17,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:17,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:17,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:02:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-22 21:02:17,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:17,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954682795] [2023-11-22 21:02:17,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954682795] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:17,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154769274] [2023-11-22 21:02:17,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:17,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:17,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:17,822 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) [2023-11-22 21:02:17,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 21:02:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:18,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 21:02:18,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-22 21:02:18,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:18,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154769274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:18,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:18,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 21:02:18,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187589960] [2023-11-22 21:02:18,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:18,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:02:18,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:18,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:02:18,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:18,263 INFO L87 Difference]: Start difference. First operand 257 states and 348 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:19,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:19,523 INFO L93 Difference]: Finished difference Result 325 states and 455 transitions. [2023-11-22 21:02:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:02:19,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 82 [2023-11-22 21:02:19,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:19,525 INFO L225 Difference]: With dead ends: 325 [2023-11-22 21:02:19,525 INFO L226 Difference]: Without dead ends: 315 [2023-11-22 21:02:19,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:19,525 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 93 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:19,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 561 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-22 21:02:19,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-22 21:02:19,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 258. [2023-11-22 21:02:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 224 states have (on average 1.3258928571428572) internal successors, (297), 228 states have internal predecessors, (297), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:19,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 349 transitions. [2023-11-22 21:02:19,535 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 349 transitions. Word has length 82 [2023-11-22 21:02:19,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:19,537 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 349 transitions. [2023-11-22 21:02:19,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:19,537 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 349 transitions. [2023-11-22 21:02:19,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-22 21:02:19,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:19,539 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1] [2023-11-22 21:02:19,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 21:02:19,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:19,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:19,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:19,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1045740304, now seen corresponding path program 1 times [2023-11-22 21:02:19,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:19,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671186692] [2023-11-22 21:02:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:19,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:19,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:19,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:19,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:19,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:19,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:20,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:02:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-22 21:02:20,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:20,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671186692] [2023-11-22 21:02:20,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671186692] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:20,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775665357] [2023-11-22 21:02:20,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:20,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:20,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:20,113 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) [2023-11-22 21:02:20,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 21:02:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:20,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:02:20,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:20,552 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-22 21:02:20,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:20,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775665357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:20,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:20,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 21:02:20,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019145969] [2023-11-22 21:02:20,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:20,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:02:20,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:20,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:02:20,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:20,554 INFO L87 Difference]: Start difference. First operand 258 states and 349 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:21,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:21,716 INFO L93 Difference]: Finished difference Result 326 states and 456 transitions. [2023-11-22 21:02:21,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:02:21,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 92 [2023-11-22 21:02:21,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:21,718 INFO L225 Difference]: With dead ends: 326 [2023-11-22 21:02:21,718 INFO L226 Difference]: Without dead ends: 316 [2023-11-22 21:02:21,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:21,718 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 83 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:21,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 648 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-22 21:02:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-22 21:02:21,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2023-11-22 21:02:21,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 281 states have (on average 1.387900355871886) internal successors, (390), 285 states have internal predecessors, (390), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:21,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 442 transitions. [2023-11-22 21:02:21,728 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 442 transitions. Word has length 92 [2023-11-22 21:02:21,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:21,729 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 442 transitions. [2023-11-22 21:02:21,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:21,730 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 442 transitions. [2023-11-22 21:02:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-22 21:02:21,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:21,731 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:02:21,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 21:02:21,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:21,940 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:21,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:21,941 INFO L85 PathProgramCache]: Analyzing trace with hash -979892800, now seen corresponding path program 1 times [2023-11-22 21:02:21,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:21,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423630629] [2023-11-22 21:02:21,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:21,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:22,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:22,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:22,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:22,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:22,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:22,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:02:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-22 21:02:22,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:22,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423630629] [2023-11-22 21:02:22,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423630629] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:22,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525508893] [2023-11-22 21:02:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:22,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:22,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:22,293 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) [2023-11-22 21:02:22,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 21:02:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:22,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:02:22,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-22 21:02:22,812 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:22,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525508893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:22,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:22,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 21:02:22,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173727211] [2023-11-22 21:02:22,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:22,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:02:22,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:22,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:02:22,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:22,816 INFO L87 Difference]: Start difference. First operand 315 states and 442 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:24,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:24,225 INFO L93 Difference]: Finished difference Result 441 states and 643 transitions. [2023-11-22 21:02:24,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:02:24,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 98 [2023-11-22 21:02:24,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:24,234 INFO L225 Difference]: With dead ends: 441 [2023-11-22 21:02:24,234 INFO L226 Difference]: Without dead ends: 431 [2023-11-22 21:02:24,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:24,235 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 77 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:24,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 648 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-22 21:02:24,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-11-22 21:02:24,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2023-11-22 21:02:24,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 397 states have (on average 1.455919395465995) internal successors, (578), 401 states have internal predecessors, (578), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 630 transitions. [2023-11-22 21:02:24,250 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 630 transitions. Word has length 98 [2023-11-22 21:02:24,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:24,250 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 630 transitions. [2023-11-22 21:02:24,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:24,251 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 630 transitions. [2023-11-22 21:02:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 21:02:24,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:24,253 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:02:24,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-22 21:02:24,468 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,SelfDestructingSolverStorable8 [2023-11-22 21:02:24,469 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:24,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:24,469 INFO L85 PathProgramCache]: Analyzing trace with hash -68643182, now seen corresponding path program 1 times [2023-11-22 21:02:24,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:24,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371823490] [2023-11-22 21:02:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:24,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:24,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:24,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:24,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:24,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:24,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:24,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:02:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:24,838 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-22 21:02:24,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:24,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371823490] [2023-11-22 21:02:24,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371823490] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:24,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863451466] [2023-11-22 21:02:24,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:24,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:24,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:24,861 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) [2023-11-22 21:02:24,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 21:02:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:25,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:02:25,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 21:02:25,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:25,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863451466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:25,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:25,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 21:02:25,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141539165] [2023-11-22 21:02:25,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:25,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:02:25,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:25,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:02:25,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:02:25,414 INFO L87 Difference]: Start difference. First operand 431 states and 630 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:27,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:27,430 INFO L93 Difference]: Finished difference Result 721 states and 1095 transitions. [2023-11-22 21:02:27,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:02:27,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 136 [2023-11-22 21:02:27,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:27,434 INFO L225 Difference]: With dead ends: 721 [2023-11-22 21:02:27,434 INFO L226 Difference]: Without dead ends: 479 [2023-11-22 21:02:27,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:02:27,435 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 21 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:27,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 969 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-22 21:02:27,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-11-22 21:02:27,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 439. [2023-11-22 21:02:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 405 states have (on average 1.4469135802469135) internal successors, (586), 409 states have internal predecessors, (586), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:27,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 638 transitions. [2023-11-22 21:02:27,455 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 638 transitions. Word has length 136 [2023-11-22 21:02:27,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:27,456 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 638 transitions. [2023-11-22 21:02:27,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:27,456 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 638 transitions. [2023-11-22 21:02:27,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 21:02:27,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:27,457 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:02:27,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-22 21:02:27,670 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,SelfDestructingSolverStorable9 [2023-11-22 21:02:27,670 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:27,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:27,671 INFO L85 PathProgramCache]: Analyzing trace with hash 632956692, now seen corresponding path program 1 times [2023-11-22 21:02:27,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:27,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919723634] [2023-11-22 21:02:27,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:27,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:27,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:27,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:27,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:27,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:27,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:27,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:02:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-22 21:02:28,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:28,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919723634] [2023-11-22 21:02:28,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919723634] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:28,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957060550] [2023-11-22 21:02:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:28,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:28,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:28,053 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) [2023-11-22 21:02:28,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 21:02:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:28,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:02:28,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:28,570 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 21:02:28,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:28,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957060550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:28,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:28,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 21:02:28,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303844242] [2023-11-22 21:02:28,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:28,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:02:28,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:28,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:02:28,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:02:28,573 INFO L87 Difference]: Start difference. First operand 439 states and 638 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:30,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:30,155 INFO L93 Difference]: Finished difference Result 721 states and 1087 transitions. [2023-11-22 21:02:30,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:02:30,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 136 [2023-11-22 21:02:30,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:30,158 INFO L225 Difference]: With dead ends: 721 [2023-11-22 21:02:30,158 INFO L226 Difference]: Without dead ends: 471 [2023-11-22 21:02:30,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:02:30,158 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 12 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:30,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 966 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-22 21:02:30,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-11-22 21:02:30,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 447. [2023-11-22 21:02:30,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 413 states have (on average 1.4382566585956416) internal successors, (594), 417 states have internal predecessors, (594), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 646 transitions. [2023-11-22 21:02:30,187 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 646 transitions. Word has length 136 [2023-11-22 21:02:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:30,189 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 646 transitions. [2023-11-22 21:02:30,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:30,190 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 646 transitions. [2023-11-22 21:02:30,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 21:02:30,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:30,191 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:02:30,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 21:02:30,405 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,SelfDestructingSolverStorable10 [2023-11-22 21:02:30,406 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:30,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:30,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2019160086, now seen corresponding path program 1 times [2023-11-22 21:02:30,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:30,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486825529] [2023-11-22 21:02:30,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:30,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:30,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:30,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:30,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:30,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:30,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:30,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:02:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-22 21:02:30,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:30,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486825529] [2023-11-22 21:02:30,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486825529] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:30,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232480307] [2023-11-22 21:02:30,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:30,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:30,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:30,843 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) [2023-11-22 21:02:30,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 21:02:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:31,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:02:31,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:31,428 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 21:02:31,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:31,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232480307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:31,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:31,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 21:02:31,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439862386] [2023-11-22 21:02:31,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:31,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:02:31,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:31,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:02:31,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:02:31,430 INFO L87 Difference]: Start difference. First operand 447 states and 646 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:33,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:33,699 INFO L93 Difference]: Finished difference Result 721 states and 1079 transitions. [2023-11-22 21:02:33,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:02:33,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 136 [2023-11-22 21:02:33,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:33,701 INFO L225 Difference]: With dead ends: 721 [2023-11-22 21:02:33,701 INFO L226 Difference]: Without dead ends: 463 [2023-11-22 21:02:33,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:02:33,702 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 3 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:33,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 965 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-22 21:02:33,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-11-22 21:02:33,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 459. [2023-11-22 21:02:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 425 states have (on average 1.4258823529411764) internal successors, (606), 429 states have internal predecessors, (606), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 658 transitions. [2023-11-22 21:02:33,710 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 658 transitions. Word has length 136 [2023-11-22 21:02:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:33,711 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 658 transitions. [2023-11-22 21:02:33,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 658 transitions. [2023-11-22 21:02:33,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 21:02:33,712 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:33,712 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:02:33,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-22 21:02:33,925 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,SelfDestructingSolverStorable11 [2023-11-22 21:02:33,926 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:33,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:33,926 INFO L85 PathProgramCache]: Analyzing trace with hash -352579176, now seen corresponding path program 1 times [2023-11-22 21:02:33,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:33,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613461091] [2023-11-22 21:02:33,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:33,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:34,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:34,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:34,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:34,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:34,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:34,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:02:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-22 21:02:34,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:34,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613461091] [2023-11-22 21:02:34,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613461091] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:34,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189554136] [2023-11-22 21:02:34,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:34,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:34,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:34,297 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) [2023-11-22 21:02:34,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 21:02:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:34,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:02:34,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 21:02:34,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:34,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189554136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:34,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:34,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 21:02:34,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863011275] [2023-11-22 21:02:34,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:34,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:02:34,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:34,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:02:34,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:02:34,860 INFO L87 Difference]: Start difference. First operand 459 states and 658 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:36,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:36,795 INFO L93 Difference]: Finished difference Result 761 states and 1127 transitions. [2023-11-22 21:02:36,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:02:36,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 136 [2023-11-22 21:02:36,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:36,797 INFO L225 Difference]: With dead ends: 761 [2023-11-22 21:02:36,798 INFO L226 Difference]: Without dead ends: 491 [2023-11-22 21:02:36,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:02:36,799 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 12 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:36,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 966 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-22 21:02:36,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-11-22 21:02:36,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 467. [2023-11-22 21:02:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 433 states have (on average 1.418013856812933) internal successors, (614), 437 states have internal predecessors, (614), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:36,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 666 transitions. [2023-11-22 21:02:36,812 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 666 transitions. Word has length 136 [2023-11-22 21:02:36,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:36,812 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 666 transitions. [2023-11-22 21:02:36,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:36,813 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 666 transitions. [2023-11-22 21:02:36,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 21:02:36,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:36,814 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:02:36,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-22 21:02:37,028 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,SelfDestructingSolverStorable12 [2023-11-22 21:02:37,029 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:37,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:37,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2136949786, now seen corresponding path program 1 times [2023-11-22 21:02:37,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:37,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47571658] [2023-11-22 21:02:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:37,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:37,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:37,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:37,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:37,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:37,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:37,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:02:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-22 21:02:37,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:37,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47571658] [2023-11-22 21:02:37,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47571658] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:37,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065675450] [2023-11-22 21:02:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:37,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:37,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:37,392 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) [2023-11-22 21:02:37,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 21:02:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:37,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:02:37,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 21:02:37,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:37,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065675450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:37,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:37,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 21:02:37,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376633833] [2023-11-22 21:02:37,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:37,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:02:37,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:37,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:02:37,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:02:37,977 INFO L87 Difference]: Start difference. First operand 467 states and 666 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:40,053 INFO L93 Difference]: Finished difference Result 761 states and 1119 transitions. [2023-11-22 21:02:40,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:02:40,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 136 [2023-11-22 21:02:40,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:40,055 INFO L225 Difference]: With dead ends: 761 [2023-11-22 21:02:40,055 INFO L226 Difference]: Without dead ends: 483 [2023-11-22 21:02:40,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:02:40,056 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 3 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:40,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 965 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-22 21:02:40,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-11-22 21:02:40,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 479. [2023-11-22 21:02:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 445 states have (on average 1.4067415730337078) internal successors, (626), 449 states have internal predecessors, (626), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 678 transitions. [2023-11-22 21:02:40,063 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 678 transitions. Word has length 136 [2023-11-22 21:02:40,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:40,063 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 678 transitions. [2023-11-22 21:02:40,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:40,064 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 678 transitions. [2023-11-22 21:02:40,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 21:02:40,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:40,065 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:02:40,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-22 21:02:40,278 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,SelfDestructingSolverStorable13 [2023-11-22 21:02:40,278 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:40,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:40,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1735315684, now seen corresponding path program 1 times [2023-11-22 21:02:40,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:40,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681650192] [2023-11-22 21:02:40,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:40,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:40,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:40,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:40,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:40,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:40,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:40,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:02:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-22 21:02:40,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:40,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681650192] [2023-11-22 21:02:40,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681650192] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:40,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426520431] [2023-11-22 21:02:40,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:40,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:40,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:40,651 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) [2023-11-22 21:02:40,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-22 21:02:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:41,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:02:41,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 21:02:41,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:41,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426520431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:41,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:41,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 21:02:41,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563438378] [2023-11-22 21:02:41,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:41,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:02:41,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:41,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:02:41,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:02:41,252 INFO L87 Difference]: Start difference. First operand 479 states and 678 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:43,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:43,525 INFO L93 Difference]: Finished difference Result 801 states and 1167 transitions. [2023-11-22 21:02:43,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:02:43,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 136 [2023-11-22 21:02:43,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:43,528 INFO L225 Difference]: With dead ends: 801 [2023-11-22 21:02:43,528 INFO L226 Difference]: Without dead ends: 511 [2023-11-22 21:02:43,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:02:43,528 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 12 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:43,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 966 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-22 21:02:43,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2023-11-22 21:02:43,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 487. [2023-11-22 21:02:43,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 453 states have (on average 1.3995584988962473) internal successors, (634), 457 states have internal predecessors, (634), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:43,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 686 transitions. [2023-11-22 21:02:43,537 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 686 transitions. Word has length 136 [2023-11-22 21:02:43,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:43,537 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 686 transitions. [2023-11-22 21:02:43,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:43,537 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 686 transitions. [2023-11-22 21:02:43,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 21:02:43,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:43,538 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:02:43,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-22 21:02:43,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:43,755 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:43,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:43,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1279787934, now seen corresponding path program 1 times [2023-11-22 21:02:43,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:43,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132726028] [2023-11-22 21:02:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:43,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:43,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:43,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:43,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:43,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:43,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:44,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:02:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-22 21:02:44,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:44,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132726028] [2023-11-22 21:02:44,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132726028] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:44,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725713361] [2023-11-22 21:02:44,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:44,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:44,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:44,095 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) [2023-11-22 21:02:44,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-22 21:02:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:44,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:02:44,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 21:02:44,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:44,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725713361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:44,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:44,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 21:02:44,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722236157] [2023-11-22 21:02:44,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:44,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:02:44,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:44,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:02:44,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:02:44,704 INFO L87 Difference]: Start difference. First operand 487 states and 686 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:46,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:46,788 INFO L93 Difference]: Finished difference Result 801 states and 1159 transitions. [2023-11-22 21:02:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:02:46,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 136 [2023-11-22 21:02:46,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:46,790 INFO L225 Difference]: With dead ends: 801 [2023-11-22 21:02:46,790 INFO L226 Difference]: Without dead ends: 503 [2023-11-22 21:02:46,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:02:46,791 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 3 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:46,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 965 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-22 21:02:46,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-11-22 21:02:46,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 499. [2023-11-22 21:02:46,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 465 states have (on average 1.389247311827957) internal successors, (646), 469 states have internal predecessors, (646), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 698 transitions. [2023-11-22 21:02:46,799 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 698 transitions. Word has length 136 [2023-11-22 21:02:46,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:46,799 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 698 transitions. [2023-11-22 21:02:46,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:46,799 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 698 transitions. [2023-11-22 21:02:46,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-22 21:02:46,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:46,800 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:02:46,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-22 21:02:47,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-22 21:02:47,014 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:47,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:47,014 INFO L85 PathProgramCache]: Analyzing trace with hash -146967782, now seen corresponding path program 1 times [2023-11-22 21:02:47,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:47,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243846581] [2023-11-22 21:02:47,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:47,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:47,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:47,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:47,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:47,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:47,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:02:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:47,350 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-22 21:02:47,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:47,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243846581] [2023-11-22 21:02:47,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243846581] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:47,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621424350] [2023-11-22 21:02:47,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:47,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:47,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:47,368 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) [2023-11-22 21:02:47,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-22 21:02:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:48,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:02:48,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-22 21:02:48,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:48,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621424350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:48,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:48,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 21:02:48,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998608212] [2023-11-22 21:02:48,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:48,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:02:48,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:48,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:02:48,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:48,068 INFO L87 Difference]: Start difference. First operand 499 states and 698 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:49,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:49,331 INFO L93 Difference]: Finished difference Result 809 states and 1155 transitions. [2023-11-22 21:02:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:02:49,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 136 [2023-11-22 21:02:49,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:49,334 INFO L225 Difference]: With dead ends: 809 [2023-11-22 21:02:49,334 INFO L226 Difference]: Without dead ends: 799 [2023-11-22 21:02:49,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:49,335 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 54 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:49,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 649 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-22 21:02:49,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-11-22 21:02:49,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 799. [2023-11-22 21:02:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 765 states have (on average 1.4248366013071896) internal successors, (1090), 769 states have internal predecessors, (1090), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1142 transitions. [2023-11-22 21:02:49,345 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1142 transitions. Word has length 136 [2023-11-22 21:02:49,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:49,345 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 1142 transitions. [2023-11-22 21:02:49,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:49,346 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1142 transitions. [2023-11-22 21:02:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-22 21:02:49,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:49,347 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:02:49,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-22 21:02:49,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-22 21:02:49,561 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:49,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:49,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1470620722, now seen corresponding path program 1 times [2023-11-22 21:02:49,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:49,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933448090] [2023-11-22 21:02:49,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:49,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:49,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:49,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:49,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:49,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:49,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:49,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:02:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:49,894 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-22 21:02:49,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:49,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933448090] [2023-11-22 21:02:49,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933448090] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:49,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143635965] [2023-11-22 21:02:49,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:49,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:49,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:49,896 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) [2023-11-22 21:02:49,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-22 21:02:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:50,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:02:50,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:50,627 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-22 21:02:50,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:50,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143635965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:50,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:50,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 21:02:50,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438131562] [2023-11-22 21:02:50,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:50,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:02:50,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:50,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:02:50,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:50,630 INFO L87 Difference]: Start difference. First operand 799 states and 1142 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:51,914 INFO L93 Difference]: Finished difference Result 1409 states and 2043 transitions. [2023-11-22 21:02:51,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:02:51,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 146 [2023-11-22 21:02:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:51,918 INFO L225 Difference]: With dead ends: 1409 [2023-11-22 21:02:51,918 INFO L226 Difference]: Without dead ends: 1399 [2023-11-22 21:02:51,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:51,918 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 53 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:51,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 647 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-22 21:02:51,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2023-11-22 21:02:51,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1399. [2023-11-22 21:02:51,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1365 states have (on average 1.449084249084249) internal successors, (1978), 1369 states have internal predecessors, (1978), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:51,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 2030 transitions. [2023-11-22 21:02:51,936 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 2030 transitions. Word has length 146 [2023-11-22 21:02:51,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:51,936 INFO L495 AbstractCegarLoop]: Abstraction has 1399 states and 2030 transitions. [2023-11-22 21:02:51,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:51,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 2030 transitions. [2023-11-22 21:02:51,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-22 21:02:51,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:51,938 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:02:51,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-22 21:02:52,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-22 21:02:52,153 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:52,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:52,153 INFO L85 PathProgramCache]: Analyzing trace with hash 163684800, now seen corresponding path program 1 times [2023-11-22 21:02:52,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:52,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789000325] [2023-11-22 21:02:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:52,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:52,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:52,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:52,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:52,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:02:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-22 21:02:52,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:52,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789000325] [2023-11-22 21:02:52,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789000325] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:52,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775230061] [2023-11-22 21:02:52,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:52,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:52,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:52,545 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) [2023-11-22 21:02:52,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-22 21:02:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:53,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:02:53,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-22 21:02:53,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:53,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775230061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:53,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:53,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 21:02:53,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633251001] [2023-11-22 21:02:53,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:53,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:02:53,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:53,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:02:53,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:02:53,262 INFO L87 Difference]: Start difference. First operand 1399 states and 2030 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:55,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:55,133 INFO L93 Difference]: Finished difference Result 2673 states and 3931 transitions. [2023-11-22 21:02:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:02:55,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 190 [2023-11-22 21:02:55,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:55,136 INFO L225 Difference]: With dead ends: 2673 [2023-11-22 21:02:55,137 INFO L226 Difference]: Without dead ends: 1463 [2023-11-22 21:02:55,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:02:55,139 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 3 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:55,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 965 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-22 21:02:55,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2023-11-22 21:02:55,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1447. [2023-11-22 21:02:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 1413 states have (on average 1.4338287331917905) internal successors, (2026), 1417 states have internal predecessors, (2026), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 2078 transitions. [2023-11-22 21:02:55,158 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 2078 transitions. Word has length 190 [2023-11-22 21:02:55,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:55,158 INFO L495 AbstractCegarLoop]: Abstraction has 1447 states and 2078 transitions. [2023-11-22 21:02:55,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:55,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 2078 transitions. [2023-11-22 21:02:55,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-22 21:02:55,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:55,181 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:02:55,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-22 21:02:55,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:55,396 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:55,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:55,397 INFO L85 PathProgramCache]: Analyzing trace with hash -280215874, now seen corresponding path program 1 times [2023-11-22 21:02:55,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:55,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244157211] [2023-11-22 21:02:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:55,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:55,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:55,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:55,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:55,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:55,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:55,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:02:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-22 21:02:55,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:55,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244157211] [2023-11-22 21:02:55,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244157211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:55,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073943902] [2023-11-22 21:02:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:55,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:55,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:55,722 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) [2023-11-22 21:02:55,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-22 21:02:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:56,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:02:56,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:56,540 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-22 21:02:56,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:56,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073943902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:56,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:56,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 21:02:56,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541868867] [2023-11-22 21:02:56,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:56,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:02:56,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:56,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:02:56,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:56,543 INFO L87 Difference]: Start difference. First operand 1447 states and 2078 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:57,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:02:57,822 INFO L93 Difference]: Finished difference Result 2705 states and 3915 transitions. [2023-11-22 21:02:57,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:02:57,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 190 [2023-11-22 21:02:57,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:02:57,829 INFO L225 Difference]: With dead ends: 2705 [2023-11-22 21:02:57,829 INFO L226 Difference]: Without dead ends: 2695 [2023-11-22 21:02:57,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:57,830 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 43 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:02:57,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 648 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-22 21:02:57,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2023-11-22 21:02:57,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2695. [2023-11-22 21:02:57,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2695 states, 2661 states have (on average 1.4468245020668922) internal successors, (3850), 2665 states have internal predecessors, (3850), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:02:57,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2695 states to 2695 states and 3902 transitions. [2023-11-22 21:02:57,867 INFO L78 Accepts]: Start accepts. Automaton has 2695 states and 3902 transitions. Word has length 190 [2023-11-22 21:02:57,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:02:57,867 INFO L495 AbstractCegarLoop]: Abstraction has 2695 states and 3902 transitions. [2023-11-22 21:02:57,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:02:57,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2695 states and 3902 transitions. [2023-11-22 21:02:57,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-22 21:02:57,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:02:57,871 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:02:57,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-22 21:02:58,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:58,085 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:02:58,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:02:58,085 INFO L85 PathProgramCache]: Analyzing trace with hash 107976430, now seen corresponding path program 1 times [2023-11-22 21:02:58,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:02:58,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456530616] [2023-11-22 21:02:58,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:58,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:02:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:58,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:02:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:58,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:02:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:58,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:02:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:58,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:02:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:58,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:02:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:58,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:02:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-22 21:02:58,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:02:58,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456530616] [2023-11-22 21:02:58,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456530616] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:02:58,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183617945] [2023-11-22 21:02:58,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:02:58,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:02:58,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:02:58,481 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) [2023-11-22 21:02:58,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-22 21:02:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:02:59,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:02:59,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:02:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-22 21:02:59,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:02:59,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183617945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:02:59,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:02:59,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 21:02:59,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652562204] [2023-11-22 21:02:59,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:02:59,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:02:59,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:02:59,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:02:59,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:02:59,436 INFO L87 Difference]: Start difference. First operand 2695 states and 3902 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:03:01,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:03:01,032 INFO L93 Difference]: Finished difference Result 5201 states and 7563 transitions. [2023-11-22 21:03:01,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:03:01,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 214 [2023-11-22 21:03:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:03:01,045 INFO L225 Difference]: With dead ends: 5201 [2023-11-22 21:03:01,045 INFO L226 Difference]: Without dead ends: 5191 [2023-11-22 21:03:01,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:03:01,048 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 38 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-22 21:03:01,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 647 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-22 21:03:01,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2023-11-22 21:03:01,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 5191. [2023-11-22 21:03:01,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5157 states have (on average 1.4539460926895482) internal successors, (7498), 5161 states have internal predecessors, (7498), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:03:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 7550 transitions. [2023-11-22 21:03:01,109 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 7550 transitions. Word has length 214 [2023-11-22 21:03:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:03:01,109 INFO L495 AbstractCegarLoop]: Abstraction has 5191 states and 7550 transitions. [2023-11-22 21:03:01,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:03:01,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 7550 transitions. [2023-11-22 21:03:01,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-11-22 21:03:01,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:03:01,117 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:03:01,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-22 21:03:01,332 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,SelfDestructingSolverStorable20 [2023-11-22 21:03:01,332 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:03:01,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:03:01,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1245438742, now seen corresponding path program 1 times [2023-11-22 21:03:01,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:03:01,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775462448] [2023-11-22 21:03:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:03:01,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:03:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:01,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:03:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:01,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:03:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:01,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:03:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:01,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:03:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:01,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:03:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:01,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:03:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:01,774 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-11-22 21:03:01,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:03:01,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775462448] [2023-11-22 21:03:01,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775462448] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:03:01,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791736600] [2023-11-22 21:03:01,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:03:01,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:03:01,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:03:01,776 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:03:01,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-22 21:03:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:02,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:03:02,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:03:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-11-22 21:03:02,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:03:02,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791736600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:03:02,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:03:02,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 21:03:02,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630573516] [2023-11-22 21:03:02,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:03:02,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:03:02,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:03:02,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:03:02,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:03:02,733 INFO L87 Difference]: Start difference. First operand 5191 states and 7550 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:03:04,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:03:04,324 INFO L93 Difference]: Finished difference Result 10193 states and 14859 transitions. [2023-11-22 21:03:04,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:03:04,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 244 [2023-11-22 21:03:04,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:03:04,354 INFO L225 Difference]: With dead ends: 10193 [2023-11-22 21:03:04,354 INFO L226 Difference]: Without dead ends: 10183 [2023-11-22 21:03:04,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:03:04,359 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 34 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-22 21:03:04,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 648 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-22 21:03:04,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10183 states. [2023-11-22 21:03:04,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10183 to 10183. [2023-11-22 21:03:04,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10183 states, 10149 states have (on average 1.4576805596610503) internal successors, (14794), 10153 states have internal predecessors, (14794), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:03:04,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10183 states to 10183 states and 14846 transitions. [2023-11-22 21:03:04,494 INFO L78 Accepts]: Start accepts. Automaton has 10183 states and 14846 transitions. Word has length 244 [2023-11-22 21:03:04,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:03:04,495 INFO L495 AbstractCegarLoop]: Abstraction has 10183 states and 14846 transitions. [2023-11-22 21:03:04,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:03:04,495 INFO L276 IsEmpty]: Start isEmpty. Operand 10183 states and 14846 transitions. [2023-11-22 21:03:04,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-11-22 21:03:04,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:03:04,511 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:03:04,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-22 21:03:04,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-22 21:03:04,744 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:03:04,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:03:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash 862515896, now seen corresponding path program 1 times [2023-11-22 21:03:04,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:03:04,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165450431] [2023-11-22 21:03:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:03:04,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:03:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:05,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:03:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:05,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:03:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:05,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:03:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:05,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:03:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:05,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:03:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:05,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:03:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2023-11-22 21:03:05,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:03:05,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165450431] [2023-11-22 21:03:05,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165450431] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:03:05,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533720719] [2023-11-22 21:03:05,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:03:05,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:03:05,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:03:05,199 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:03:05,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-22 21:03:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:06,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 1233 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:03:06,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:03:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-11-22 21:03:06,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:03:06,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533720719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:03:06,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:03:06,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 21:03:06,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335254349] [2023-11-22 21:03:06,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:03:06,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:03:06,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:03:06,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:03:06,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:03:06,150 INFO L87 Difference]: Start difference. First operand 10183 states and 14846 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:03:08,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:03:08,312 INFO L93 Difference]: Finished difference Result 20689 states and 30347 transitions. [2023-11-22 21:03:08,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:03:08,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 296 [2023-11-22 21:03:08,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:03:08,349 INFO L225 Difference]: With dead ends: 20689 [2023-11-22 21:03:08,349 INFO L226 Difference]: Without dead ends: 10695 [2023-11-22 21:03:08,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:03:08,361 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 3 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:03:08,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 965 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-22 21:03:08,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10695 states. [2023-11-22 21:03:08,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10695 to 10567. [2023-11-22 21:03:08,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10567 states, 10533 states have (on average 1.4409949681951961) internal successors, (15178), 10537 states have internal predecessors, (15178), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:03:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10567 states to 10567 states and 15230 transitions. [2023-11-22 21:03:08,488 INFO L78 Accepts]: Start accepts. Automaton has 10567 states and 15230 transitions. Word has length 296 [2023-11-22 21:03:08,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:03:08,489 INFO L495 AbstractCegarLoop]: Abstraction has 10567 states and 15230 transitions. [2023-11-22 21:03:08,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:03:08,490 INFO L276 IsEmpty]: Start isEmpty. Operand 10567 states and 15230 transitions. [2023-11-22 21:03:08,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-11-22 21:03:08,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:03:08,505 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:03:08,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-22 21:03:08,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:03:08,721 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:03:08,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:03:08,721 INFO L85 PathProgramCache]: Analyzing trace with hash -584064970, now seen corresponding path program 1 times [2023-11-22 21:03:08,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:03:08,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855827064] [2023-11-22 21:03:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:03:08,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:03:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:08,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:03:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:08,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:03:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:08,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:03:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:08,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:03:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:08,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:03:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:03:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2023-11-22 21:03:09,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:03:09,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855827064] [2023-11-22 21:03:09,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855827064] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:03:09,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583992711] [2023-11-22 21:03:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:03:09,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:03:09,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:03:09,132 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:03:09,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-22 21:03:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:10,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:03:10,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:03:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-11-22 21:03:10,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:03:10,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583992711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:03:10,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:03:10,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 21:03:10,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469361584] [2023-11-22 21:03:10,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:03:10,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:03:10,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:03:10,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:03:10,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:03:10,300 INFO L87 Difference]: Start difference. First operand 10567 states and 15230 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:03:11,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:03:11,652 INFO L93 Difference]: Finished difference Result 20945 states and 30219 transitions. [2023-11-22 21:03:11,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:03:11,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 296 [2023-11-22 21:03:11,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:03:11,681 INFO L225 Difference]: With dead ends: 20945 [2023-11-22 21:03:11,681 INFO L226 Difference]: Without dead ends: 20935 [2023-11-22 21:03:11,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:03:11,690 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 23 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:03:11,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 647 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-22 21:03:11,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20935 states. [2023-11-22 21:03:11,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20935 to 20935. [2023-11-22 21:03:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20935 states, 20901 states have (on average 1.4427060906176739) internal successors, (30154), 20905 states have internal predecessors, (30154), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:03:11,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20935 states to 20935 states and 30206 transitions. [2023-11-22 21:03:11,916 INFO L78 Accepts]: Start accepts. Automaton has 20935 states and 30206 transitions. Word has length 296 [2023-11-22 21:03:11,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:03:11,917 INFO L495 AbstractCegarLoop]: Abstraction has 20935 states and 30206 transitions. [2023-11-22 21:03:11,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:03:11,917 INFO L276 IsEmpty]: Start isEmpty. Operand 20935 states and 30206 transitions. [2023-11-22 21:03:11,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2023-11-22 21:03:11,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:03:11,946 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:03:11,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-22 21:03:12,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:03:12,162 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:03:12,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:03:12,162 INFO L85 PathProgramCache]: Analyzing trace with hash -875876980, now seen corresponding path program 1 times [2023-11-22 21:03:12,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:03:12,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081355588] [2023-11-22 21:03:12,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:03:12,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:03:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:12,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:03:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:03:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:12,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:03:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:12,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:03:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:12,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:03:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:12,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:03:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2023-11-22 21:03:12,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:03:12,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081355588] [2023-11-22 21:03:12,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081355588] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:03:12,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301884413] [2023-11-22 21:03:12,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:03:12,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:03:12,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:03:12,601 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:03:12,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-22 21:03:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:13,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 1362 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 21:03:13,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:03:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2023-11-22 21:03:13,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:03:13,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301884413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:03:13,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:03:13,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-22 21:03:13,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330752070] [2023-11-22 21:03:13,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:03:13,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:03:13,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:03:13,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:03:13,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:03:13,475 INFO L87 Difference]: Start difference. First operand 20935 states and 30206 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:03:14,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:03:14,616 INFO L93 Difference]: Finished difference Result 31569 states and 45707 transitions. [2023-11-22 21:03:14,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:03:14,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 354 [2023-11-22 21:03:14,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:03:14,643 INFO L225 Difference]: With dead ends: 31569 [2023-11-22 21:03:14,643 INFO L226 Difference]: Without dead ends: 21191 [2023-11-22 21:03:14,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:03:14,659 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 0 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:03:14,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 647 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-22 21:03:14,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21191 states. [2023-11-22 21:03:14,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21191 to 21191. [2023-11-22 21:03:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21191 states, 21157 states have (on average 1.4373493406437585) internal successors, (30410), 21161 states have internal predecessors, (30410), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:03:14,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21191 states to 21191 states and 30462 transitions. [2023-11-22 21:03:14,965 INFO L78 Accepts]: Start accepts. Automaton has 21191 states and 30462 transitions. Word has length 354 [2023-11-22 21:03:14,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:03:14,966 INFO L495 AbstractCegarLoop]: Abstraction has 21191 states and 30462 transitions. [2023-11-22 21:03:14,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-22 21:03:14,966 INFO L276 IsEmpty]: Start isEmpty. Operand 21191 states and 30462 transitions. [2023-11-22 21:03:14,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2023-11-22 21:03:14,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:03:14,990 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:03:15,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-22 21:03:15,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-22 21:03:15,207 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:03:15,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:03:15,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1091927946, now seen corresponding path program 1 times [2023-11-22 21:03:15,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:03:15,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204208474] [2023-11-22 21:03:15,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:03:15,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:03:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:15,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 21:03:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 21:03:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:15,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:03:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 21:03:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:15,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 21:03:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:15,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:03:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:15,581 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2023-11-22 21:03:15,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:03:15,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204208474] [2023-11-22 21:03:15,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204208474] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:03:15,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412807032] [2023-11-22 21:03:15,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:03:15,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:03:15,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:03:15,583 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:03:15,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-22 21:03:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:16,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:03:16,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:03:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2023-11-22 21:03:16,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:03:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2023-11-22 21:03:16,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412807032] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:03:16,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:03:16,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 4] total 8 [2023-11-22 21:03:16,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363467212] [2023-11-22 21:03:16,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:03:16,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:03:16,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:03:16,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:03:16,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:03:16,626 INFO L87 Difference]: Start difference. First operand 21191 states and 30462 transitions. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 1 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-22 21:03:19,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:03:19,356 INFO L93 Difference]: Finished difference Result 42382 states and 60926 transitions. [2023-11-22 21:03:19,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:03:19,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 1 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 354 [2023-11-22 21:03:19,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:03:19,380 INFO L225 Difference]: With dead ends: 42382 [2023-11-22 21:03:19,380 INFO L226 Difference]: Without dead ends: 21194 [2023-11-22 21:03:19,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:03:19,404 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 1 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-22 21:03:19,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1146 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-22 21:03:19,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21194 states. [2023-11-22 21:03:19,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21194 to 21194. [2023-11-22 21:03:19,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21194 states, 21160 states have (on average 1.4372873345935728) internal successors, (30413), 21164 states have internal predecessors, (30413), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:03:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21194 states to 21194 states and 30465 transitions. [2023-11-22 21:03:19,615 INFO L78 Accepts]: Start accepts. Automaton has 21194 states and 30465 transitions. Word has length 354 [2023-11-22 21:03:19,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:03:19,615 INFO L495 AbstractCegarLoop]: Abstraction has 21194 states and 30465 transitions. [2023-11-22 21:03:19,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 7 states have internal predecessors, (148), 1 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-22 21:03:19,615 INFO L276 IsEmpty]: Start isEmpty. Operand 21194 states and 30465 transitions. [2023-11-22 21:03:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-11-22 21:03:19,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:03:19,635 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:03:19,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-22 21:03:19,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-22 21:03:19,849 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:03:19,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:03:19,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1304100103, now seen corresponding path program 2 times [2023-11-22 21:03:19,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:03:19,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139724772] [2023-11-22 21:03:19,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:03:19,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:03:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:20,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 21:03:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:20,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:03:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:20,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 21:03:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:20,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 21:03:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:20,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-22 21:03:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:20,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-22 21:03:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2023-11-22 21:03:20,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:03:20,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139724772] [2023-11-22 21:03:20,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139724772] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:03:20,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521693092] [2023-11-22 21:03:20,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 21:03:20,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:03:20,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:03:20,413 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:03:20,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-22 21:03:23,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 21:03:23,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:03:23,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 21:03:23,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:03:23,919 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2023-11-22 21:03:23,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:03:24,011 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2023-11-22 21:03:24,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521693092] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:03:24,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:03:24,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 15 [2023-11-22 21:03:24,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184577210] [2023-11-22 21:03:24,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:03:24,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-22 21:03:24,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:03:24,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-22 21:03:24,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:03:24,013 INFO L87 Difference]: Start difference. First operand 21194 states and 30465 transitions. Second operand has 15 states, 15 states have (on average 10.6) internal successors, (159), 14 states have internal predecessors, (159), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 21:03:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:03:29,907 INFO L93 Difference]: Finished difference Result 42389 states and 60941 transitions. [2023-11-22 21:03:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-22 21:03:29,907 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.6) internal successors, (159), 14 states have internal predecessors, (159), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 357 [2023-11-22 21:03:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:03:29,929 INFO L225 Difference]: With dead ends: 42389 [2023-11-22 21:03:29,929 INFO L226 Difference]: Without dead ends: 21201 [2023-11-22 21:03:29,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-11-22 21:03:29,953 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 1 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-22 21:03:29,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2444 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-22 21:03:29,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21201 states. [2023-11-22 21:03:30,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21201 to 21201. [2023-11-22 21:03:30,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21201 states, 21167 states have (on average 1.4371427221618558) internal successors, (30420), 21171 states have internal predecessors, (30420), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:03:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21201 states to 21201 states and 30472 transitions. [2023-11-22 21:03:30,173 INFO L78 Accepts]: Start accepts. Automaton has 21201 states and 30472 transitions. Word has length 357 [2023-11-22 21:03:30,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:03:30,173 INFO L495 AbstractCegarLoop]: Abstraction has 21201 states and 30472 transitions. [2023-11-22 21:03:30,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.6) internal successors, (159), 14 states have internal predecessors, (159), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-22 21:03:30,174 INFO L276 IsEmpty]: Start isEmpty. Operand 21201 states and 30472 transitions. [2023-11-22 21:03:30,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-22 21:03:30,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:03:30,194 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:03:30,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-22 21:03:30,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-22 21:03:30,409 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:03:30,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:03:30,409 INFO L85 PathProgramCache]: Analyzing trace with hash -924074841, now seen corresponding path program 3 times [2023-11-22 21:03:30,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:03:30,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683721837] [2023-11-22 21:03:30,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:03:30,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:03:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:30,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:03:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:30,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 21:03:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:30,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 21:03:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:30,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-22 21:03:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:30,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 21:03:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:30,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 21:03:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2023-11-22 21:03:30,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:03:30,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683721837] [2023-11-22 21:03:30,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683721837] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:03:30,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293377226] [2023-11-22 21:03:30,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 21:03:30,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:03:30,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:03:30,926 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:03:30,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-22 21:03:33,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 21:03:33,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:03:33,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-22 21:03:33,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:03:34,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 322 treesize of output 316 [2023-11-22 21:03:36,125 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2023-11-22 21:03:36,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:03:36,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293377226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:03:36,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:03:36,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2023-11-22 21:03:36,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739152012] [2023-11-22 21:03:36,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:03:36,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:03:36,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:03:36,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:03:36,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:03:36,127 INFO L87 Difference]: Start difference. First operand 21201 states and 30472 transitions. Second operand has 7 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 21:03:43,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:03:43,618 INFO L93 Difference]: Finished difference Result 42261 states and 60777 transitions. [2023-11-22 21:03:43,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:03:43,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 367 [2023-11-22 21:03:43,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:03:43,641 INFO L225 Difference]: With dead ends: 42261 [2023-11-22 21:03:43,641 INFO L226 Difference]: Without dead ends: 21246 [2023-11-22 21:03:43,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:03:43,660 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 85 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:03:43,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 1253 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-22 21:03:43,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21246 states. [2023-11-22 21:03:43,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21246 to 21213. [2023-11-22 21:03:43,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21213 states, 21179 states have (on average 1.4372727701968933) internal successors, (30440), 21183 states have internal predecessors, (30440), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-22 21:03:43,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21213 states to 21213 states and 30492 transitions. [2023-11-22 21:03:43,940 INFO L78 Accepts]: Start accepts. Automaton has 21213 states and 30492 transitions. Word has length 367 [2023-11-22 21:03:43,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:03:43,940 INFO L495 AbstractCegarLoop]: Abstraction has 21213 states and 30492 transitions. [2023-11-22 21:03:43,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 21:03:43,941 INFO L276 IsEmpty]: Start isEmpty. Operand 21213 states and 30492 transitions. [2023-11-22 21:03:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-11-22 21:03:43,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:03:43,961 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1] [2023-11-22 21:03:43,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-22 21:03:44,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-22 21:03:44,179 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:03:44,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:03:44,179 INFO L85 PathProgramCache]: Analyzing trace with hash 911166449, now seen corresponding path program 1 times [2023-11-22 21:03:44,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:03:44,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123066030] [2023-11-22 21:03:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:03:44,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:03:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:44,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 21:03:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:44,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-22 21:03:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:44,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 21:03:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:44,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-22 21:03:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:44,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 21:03:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:44,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 21:03:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:44,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 21:03:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:44,609 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 814 trivial. 0 not checked. [2023-11-22 21:03:44,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:03:44,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123066030] [2023-11-22 21:03:44,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123066030] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:03:44,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618564757] [2023-11-22 21:03:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:03:44,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:03:44,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:03:44,619 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:03:44,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-22 21:03:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:45,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 21:03:45,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:03:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-22 21:03:45,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:03:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-22 21:03:46,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618564757] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:03:46,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:03:46,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 13] total 19 [2023-11-22 21:03:46,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301349301] [2023-11-22 21:03:46,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:03:46,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-22 21:03:46,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:03:46,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-22 21:03:46,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2023-11-22 21:03:46,017 INFO L87 Difference]: Start difference. First operand 21213 states and 30492 transitions. Second operand has 19 states, 19 states have (on average 9.210526315789474) internal successors, (175), 18 states have internal predecessors, (175), 2 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-22 21:03:50,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:03:50,810 INFO L93 Difference]: Finished difference Result 42431 states and 60997 transitions. [2023-11-22 21:03:50,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-22 21:03:50,810 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.210526315789474) internal successors, (175), 18 states have internal predecessors, (175), 2 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 376 [2023-11-22 21:03:50,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:03:50,831 INFO L225 Difference]: With dead ends: 42431 [2023-11-22 21:03:50,831 INFO L226 Difference]: Without dead ends: 21230 [2023-11-22 21:03:50,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 743 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2023-11-22 21:03:50,849 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 11 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-22 21:03:50,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2085 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-22 21:03:50,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21230 states. [2023-11-22 21:03:51,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21230 to 21224. [2023-11-22 21:03:51,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21224 states, 21189 states have (on average 1.4371135966775213) internal successors, (30451), 21193 states have internal predecessors, (30451), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-22 21:03:51,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21224 states to 21224 states and 30505 transitions. [2023-11-22 21:03:51,061 INFO L78 Accepts]: Start accepts. Automaton has 21224 states and 30505 transitions. Word has length 376 [2023-11-22 21:03:51,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:03:51,061 INFO L495 AbstractCegarLoop]: Abstraction has 21224 states and 30505 transitions. [2023-11-22 21:03:51,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.210526315789474) internal successors, (175), 18 states have internal predecessors, (175), 2 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-22 21:03:51,061 INFO L276 IsEmpty]: Start isEmpty. Operand 21224 states and 30505 transitions. [2023-11-22 21:03:51,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2023-11-22 21:03:51,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:03:51,081 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1] [2023-11-22 21:03:51,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-22 21:03:51,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-22 21:03:51,297 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:03:51,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:03:51,297 INFO L85 PathProgramCache]: Analyzing trace with hash 649768531, now seen corresponding path program 2 times [2023-11-22 21:03:51,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:03:51,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342321428] [2023-11-22 21:03:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:03:51,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:03:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:51,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:03:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:51,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:03:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:51,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:03:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:51,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:03:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:51,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:03:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:51,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 21:03:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:51,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 21:03:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2023-11-22 21:03:51,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:03:51,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342321428] [2023-11-22 21:03:51,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342321428] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:03:51,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616088419] [2023-11-22 21:03:51,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 21:03:51,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:03:51,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:03:51,741 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:03:51,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-22 21:03:54,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 21:03:54,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:03:54,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 21:03:54,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:03:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2023-11-22 21:03:54,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:03:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked. [2023-11-22 21:03:54,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616088419] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:03:54,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:03:54,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-22 21:03:54,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713776401] [2023-11-22 21:03:54,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:03:54,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 21:03:54,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:03:54,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 21:03:54,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:03:54,263 INFO L87 Difference]: Start difference. First operand 21224 states and 30505 transitions. Second operand has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 10 states have internal predecessors, (168), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:03:58,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:03:58,167 INFO L93 Difference]: Finished difference Result 42444 states and 61012 transitions. [2023-11-22 21:03:58,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 21:03:58,167 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 10 states have internal predecessors, (168), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 383 [2023-11-22 21:03:58,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:03:58,185 INFO L225 Difference]: With dead ends: 42444 [2023-11-22 21:03:58,186 INFO L226 Difference]: Without dead ends: 21265 [2023-11-22 21:03:58,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:03:58,203 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 52 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-22 21:03:58,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1734 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-22 21:03:58,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21265 states. [2023-11-22 21:03:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21265 to 21259. [2023-11-22 21:03:58,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21259 states, 21219 states have (on average 1.4367312314435177) internal successors, (30486), 21223 states have internal predecessors, (30486), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 21:03:58,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21259 states to 21259 states and 30550 transitions. [2023-11-22 21:03:58,408 INFO L78 Accepts]: Start accepts. Automaton has 21259 states and 30550 transitions. Word has length 383 [2023-11-22 21:03:58,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:03:58,409 INFO L495 AbstractCegarLoop]: Abstraction has 21259 states and 30550 transitions. [2023-11-22 21:03:58,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 10 states have internal predecessors, (168), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:03:58,409 INFO L276 IsEmpty]: Start isEmpty. Operand 21259 states and 30550 transitions. [2023-11-22 21:03:58,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2023-11-22 21:03:58,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:03:58,431 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:03:58,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-22 21:03:58,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:03:58,651 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:03:58,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:03:58,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1222973889, now seen corresponding path program 3 times [2023-11-22 21:03:58,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:03:58,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540140385] [2023-11-22 21:03:58,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:03:58,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:03:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:58,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:03:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:58,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:03:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:58,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:03:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:58,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:03:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:58,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:03:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:59,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 21:03:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:59,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 21:03:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:03:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2023-11-22 21:03:59,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:03:59,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540140385] [2023-11-22 21:03:59,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540140385] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:03:59,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213860090] [2023-11-22 21:03:59,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 21:03:59,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:03:59,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:03:59,136 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:03:59,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-22 21:04:01,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 21:04:01,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:04:01,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 21:04:01,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:04:01,771 INFO L378 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 23 treesize of output 7 [2023-11-22 21:04:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2023-11-22 21:04:01,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:04:01,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213860090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:04:01,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:04:01,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-22 21:04:01,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763511403] [2023-11-22 21:04:01,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:04:01,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:04:01,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:04:01,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:04:01,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:04:01,780 INFO L87 Difference]: Start difference. First operand 21259 states and 30550 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:04:04,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:04:04,416 INFO L93 Difference]: Finished difference Result 60181 states and 85347 transitions. [2023-11-22 21:04:04,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:04:04,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 398 [2023-11-22 21:04:04,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:04:04,459 INFO L225 Difference]: With dead ends: 60181 [2023-11-22 21:04:04,460 INFO L226 Difference]: Without dead ends: 39179 [2023-11-22 21:04:04,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:04:04,486 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 156 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-22 21:04:04,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 763 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-22 21:04:04,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39179 states. [2023-11-22 21:04:04,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39179 to 22795. [2023-11-22 21:04:04,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22795 states, 22755 states have (on average 1.4410019775873435) internal successors, (32790), 22759 states have internal predecessors, (32790), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 21:04:04,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22795 states to 22795 states and 32854 transitions. [2023-11-22 21:04:04,787 INFO L78 Accepts]: Start accepts. Automaton has 22795 states and 32854 transitions. Word has length 398 [2023-11-22 21:04:04,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:04:04,788 INFO L495 AbstractCegarLoop]: Abstraction has 22795 states and 32854 transitions. [2023-11-22 21:04:04,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:04:04,788 INFO L276 IsEmpty]: Start isEmpty. Operand 22795 states and 32854 transitions. [2023-11-22 21:04:04,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2023-11-22 21:04:04,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:04:04,810 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:04:04,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-22 21:04:05,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-22 21:04:05,032 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:04:05,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:04:05,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1363522499, now seen corresponding path program 1 times [2023-11-22 21:04:05,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:04:05,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027650889] [2023-11-22 21:04:05,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:05,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:04:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:05,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:04:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:05,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:04:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:05,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:04:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:05,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:04:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:05,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:04:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:05,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 21:04:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:05,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 21:04:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:05,556 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2023-11-22 21:04:05,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:04:05,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027650889] [2023-11-22 21:04:05,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027650889] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:04:05,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441770060] [2023-11-22 21:04:05,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:05,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:04:05,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:04:05,580 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:04:05,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-22 21:04:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:06,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:04:06,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:04:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 834 trivial. 0 not checked. [2023-11-22 21:04:06,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:04:06,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441770060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:04:06,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:04:06,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 21:04:06,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23442828] [2023-11-22 21:04:06,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:04:06,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:04:06,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:04:06,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:04:06,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:04:06,711 INFO L87 Difference]: Start difference. First operand 22795 states and 32854 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:04:08,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:04:08,769 INFO L93 Difference]: Finished difference Result 46101 states and 66659 transitions. [2023-11-22 21:04:08,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:04:08,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 398 [2023-11-22 21:04:08,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:04:08,795 INFO L225 Difference]: With dead ends: 46101 [2023-11-22 21:04:08,796 INFO L226 Difference]: Without dead ends: 23563 [2023-11-22 21:04:08,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:04:08,816 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 8 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:04:08,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 977 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-22 21:04:08,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23563 states. [2023-11-22 21:04:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23563 to 22795. [2023-11-22 21:04:09,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22795 states, 22755 states have (on average 1.4297517029224347) internal successors, (32534), 22759 states have internal predecessors, (32534), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 21:04:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22795 states to 22795 states and 32598 transitions. [2023-11-22 21:04:09,050 INFO L78 Accepts]: Start accepts. Automaton has 22795 states and 32598 transitions. Word has length 398 [2023-11-22 21:04:09,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:04:09,051 INFO L495 AbstractCegarLoop]: Abstraction has 22795 states and 32598 transitions. [2023-11-22 21:04:09,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:04:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 22795 states and 32598 transitions. [2023-11-22 21:04:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2023-11-22 21:04:09,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:04:09,072 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:04:09,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-22 21:04:09,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:04:09,288 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:04:09,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:04:09,289 INFO L85 PathProgramCache]: Analyzing trace with hash -441915835, now seen corresponding path program 1 times [2023-11-22 21:04:09,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:04:09,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349215815] [2023-11-22 21:04:09,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:09,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:04:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:09,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:04:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:09,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:04:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:09,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:04:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:09,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:04:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:09,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:04:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:09,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 21:04:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:09,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 21:04:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2023-11-22 21:04:09,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:04:09,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349215815] [2023-11-22 21:04:09,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349215815] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:04:09,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84885584] [2023-11-22 21:04:09,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:09,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:04:09,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:04:09,770 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:04:09,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-22 21:04:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:10,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:04:10,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:04:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked. [2023-11-22 21:04:10,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:04:10,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84885584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:04:10,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:04:10,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-22 21:04:10,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289210039] [2023-11-22 21:04:10,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:04:10,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:04:10,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:04:10,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:04:10,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:04:10,926 INFO L87 Difference]: Start difference. First operand 22795 states and 32598 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:04:13,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:04:13,320 INFO L93 Difference]: Finished difference Result 46357 states and 66659 transitions. [2023-11-22 21:04:13,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:04:13,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 398 [2023-11-22 21:04:13,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:04:13,344 INFO L225 Difference]: With dead ends: 46357 [2023-11-22 21:04:13,345 INFO L226 Difference]: Without dead ends: 23819 [2023-11-22 21:04:13,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:04:13,364 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 2 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:04:13,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 968 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-22 21:04:13,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23819 states. [2023-11-22 21:04:13,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23819 to 23563. [2023-11-22 21:04:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23563 states, 23523 states have (on average 1.39395485269736) internal successors, (32790), 23527 states have internal predecessors, (32790), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 21:04:13,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23563 states to 23563 states and 32854 transitions. [2023-11-22 21:04:13,596 INFO L78 Accepts]: Start accepts. Automaton has 23563 states and 32854 transitions. Word has length 398 [2023-11-22 21:04:13,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:04:13,596 INFO L495 AbstractCegarLoop]: Abstraction has 23563 states and 32854 transitions. [2023-11-22 21:04:13,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:04:13,597 INFO L276 IsEmpty]: Start isEmpty. Operand 23563 states and 32854 transitions. [2023-11-22 21:04:13,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2023-11-22 21:04:13,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:04:13,618 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1] [2023-11-22 21:04:13,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-22 21:04:13,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:04:13,833 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:04:13,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:04:13,833 INFO L85 PathProgramCache]: Analyzing trace with hash -19214009, now seen corresponding path program 1 times [2023-11-22 21:04:13,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:04:13,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731742165] [2023-11-22 21:04:13,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:13,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:04:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:14,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:04:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:14,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:04:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:14,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:04:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:14,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:04:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:14,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:04:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:14,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 21:04:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:14,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 21:04:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2023-11-22 21:04:14,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:04:14,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731742165] [2023-11-22 21:04:14,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731742165] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:04:14,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129286191] [2023-11-22 21:04:14,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:14,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:04:14,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:04:14,343 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:04:14,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-22 21:04:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:15,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 1686 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 21:04:15,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:04:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2023-11-22 21:04:15,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:04:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2023-11-22 21:04:15,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129286191] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:04:15,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:04:15,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-11-22 21:04:15,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276878218] [2023-11-22 21:04:15,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:04:15,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-22 21:04:15,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:04:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-22 21:04:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2023-11-22 21:04:15,765 INFO L87 Difference]: Start difference. First operand 23563 states and 32854 transitions. Second operand has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 18 states have internal predecessors, (200), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:04:21,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:04:21,495 INFO L93 Difference]: Finished difference Result 47122 states and 65714 transitions. [2023-11-22 21:04:21,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-22 21:04:21,496 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 18 states have internal predecessors, (200), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 398 [2023-11-22 21:04:21,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:04:21,518 INFO L225 Difference]: With dead ends: 47122 [2023-11-22 21:04:21,518 INFO L226 Difference]: Without dead ends: 23632 [2023-11-22 21:04:21,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2023-11-22 21:04:21,540 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 112 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-22 21:04:21,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2396 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-22 21:04:21,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23632 states. [2023-11-22 21:04:21,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23632 to 23626. [2023-11-22 21:04:21,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23626 states, 23577 states have (on average 1.393434279170378) internal successors, (32853), 23581 states have internal predecessors, (32853), 41 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-22 21:04:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23626 states to 23626 states and 32935 transitions. [2023-11-22 21:04:21,782 INFO L78 Accepts]: Start accepts. Automaton has 23626 states and 32935 transitions. Word has length 398 [2023-11-22 21:04:21,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:04:21,787 INFO L495 AbstractCegarLoop]: Abstraction has 23626 states and 32935 transitions. [2023-11-22 21:04:21,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 18 states have internal predecessors, (200), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:04:21,788 INFO L276 IsEmpty]: Start isEmpty. Operand 23626 states and 32935 transitions. [2023-11-22 21:04:21,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-11-22 21:04:21,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:04:21,809 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:04:21,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-22 21:04:22,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-22 21:04:22,025 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:04:22,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:04:22,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1497679799, now seen corresponding path program 2 times [2023-11-22 21:04:22,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:04:22,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096031515] [2023-11-22 21:04:22,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:22,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:04:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:22,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:04:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:22,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:04:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:22,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:04:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:22,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:04:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:22,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:04:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:22,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 21:04:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:22,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-22 21:04:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2023-11-22 21:04:22,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:04:22,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096031515] [2023-11-22 21:04:22,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096031515] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:04:22,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527459049] [2023-11-22 21:04:22,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 21:04:22,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:04:22,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:04:22,528 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:04:22,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-22 21:04:25,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 21:04:25,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:04:25,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 21:04:25,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:04:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2023-11-22 21:04:25,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:04:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1154 trivial. 0 not checked. [2023-11-22 21:04:25,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527459049] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:04:25,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:04:25,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-22 21:04:25,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101930141] [2023-11-22 21:04:25,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:04:25,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 21:04:25,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:04:25,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 21:04:25,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:04:25,213 INFO L87 Difference]: Start difference. First operand 23626 states and 32935 transitions. Second operand has 11 states, 11 states have (on average 16.0) internal successors, (176), 10 states have internal predecessors, (176), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:04:28,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:04:28,993 INFO L93 Difference]: Finished difference Result 47148 states and 65743 transitions. [2023-11-22 21:04:28,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 21:04:28,994 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 16.0) internal successors, (176), 10 states have internal predecessors, (176), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 425 [2023-11-22 21:04:28,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:04:29,015 INFO L225 Difference]: With dead ends: 47148 [2023-11-22 21:04:29,016 INFO L226 Difference]: Without dead ends: 23667 [2023-11-22 21:04:29,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 857 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:04:29,038 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 53 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-22 21:04:29,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1440 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-22 21:04:29,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23667 states. [2023-11-22 21:04:29,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23667 to 23661. [2023-11-22 21:04:29,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23661 states, 23607 states have (on average 1.3931461007328334) internal successors, (32888), 23611 states have internal predecessors, (32888), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-22 21:04:29,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23661 states to 23661 states and 32980 transitions. [2023-11-22 21:04:29,274 INFO L78 Accepts]: Start accepts. Automaton has 23661 states and 32980 transitions. Word has length 425 [2023-11-22 21:04:29,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:04:29,275 INFO L495 AbstractCegarLoop]: Abstraction has 23661 states and 32980 transitions. [2023-11-22 21:04:29,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.0) internal successors, (176), 10 states have internal predecessors, (176), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:04:29,275 INFO L276 IsEmpty]: Start isEmpty. Operand 23661 states and 32980 transitions. [2023-11-22 21:04:29,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-11-22 21:04:29,295 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:04:29,295 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:04:29,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-11-22 21:04:29,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-22 21:04:29,517 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:04:29,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:04:29,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1402781993, now seen corresponding path program 3 times [2023-11-22 21:04:29,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:04:29,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734571309] [2023-11-22 21:04:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:29,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:04:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:30,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:04:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:30,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:04:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:30,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:04:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:30,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:04:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:30,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:04:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:30,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 21:04:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:30,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-22 21:04:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2023-11-22 21:04:30,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:04:30,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734571309] [2023-11-22 21:04:30,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734571309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:04:30,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:04:30,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 21:04:30,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669728003] [2023-11-22 21:04:30,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:04:30,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 21:04:30,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:04:30,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 21:04:30,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:04:30,297 INFO L87 Difference]: Start difference. First operand 23661 states and 32980 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:04:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:04:34,733 INFO L93 Difference]: Finished difference Result 67447 states and 94177 transitions. [2023-11-22 21:04:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:04:34,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 440 [2023-11-22 21:04:34,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:04:34,782 INFO L225 Difference]: With dead ends: 67447 [2023-11-22 21:04:34,783 INFO L226 Difference]: Without dead ends: 44141 [2023-11-22 21:04:34,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:04:34,815 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 100 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:04:34,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1089 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-22 21:04:34,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44141 states. [2023-11-22 21:04:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44141 to 25709. [2023-11-22 21:04:35,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25709 states, 25655 states have (on average 1.4016760865328397) internal successors, (35960), 25659 states have internal predecessors, (35960), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-22 21:04:35,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25709 states to 25709 states and 36052 transitions. [2023-11-22 21:04:35,377 INFO L78 Accepts]: Start accepts. Automaton has 25709 states and 36052 transitions. Word has length 440 [2023-11-22 21:04:35,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:04:35,377 INFO L495 AbstractCegarLoop]: Abstraction has 25709 states and 36052 transitions. [2023-11-22 21:04:35,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:04:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 25709 states and 36052 transitions. [2023-11-22 21:04:35,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-11-22 21:04:35,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:04:35,409 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:04:35,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-22 21:04:35,410 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:04:35,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:04:35,410 INFO L85 PathProgramCache]: Analyzing trace with hash 778737271, now seen corresponding path program 1 times [2023-11-22 21:04:35,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:04:35,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494844408] [2023-11-22 21:04:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:35,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:04:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:35,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:04:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:35,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:04:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:35,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:04:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:35,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:04:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:35,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:04:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:35,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 21:04:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:36,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-22 21:04:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 1043 trivial. 0 not checked. [2023-11-22 21:04:36,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:04:36,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494844408] [2023-11-22 21:04:36,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494844408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:04:36,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:04:36,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 21:04:36,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989475870] [2023-11-22 21:04:36,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:04:36,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 21:04:36,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:04:36,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 21:04:36,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:04:36,027 INFO L87 Difference]: Start difference. First operand 25709 states and 36052 transitions. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 5 states have internal predecessors, (171), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:04:40,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:04:40,033 INFO L93 Difference]: Finished difference Result 68983 states and 96481 transitions. [2023-11-22 21:04:40,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:04:40,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 5 states have internal predecessors, (171), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 440 [2023-11-22 21:04:40,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:04:40,087 INFO L225 Difference]: With dead ends: 68983 [2023-11-22 21:04:40,087 INFO L226 Difference]: Without dead ends: 43629 [2023-11-22 21:04:40,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:04:40,117 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 84 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-22 21:04:40,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1089 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-22 21:04:40,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43629 states. [2023-11-22 21:04:40,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43629 to 27245. [2023-11-22 21:04:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27245 states, 27191 states have (on average 1.3789856937957412) internal successors, (37496), 27195 states have internal predecessors, (37496), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-22 21:04:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27245 states to 27245 states and 37588 transitions. [2023-11-22 21:04:40,625 INFO L78 Accepts]: Start accepts. Automaton has 27245 states and 37588 transitions. Word has length 440 [2023-11-22 21:04:40,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:04:40,626 INFO L495 AbstractCegarLoop]: Abstraction has 27245 states and 37588 transitions. [2023-11-22 21:04:40,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 5 states have internal predecessors, (171), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:04:40,626 INFO L276 IsEmpty]: Start isEmpty. Operand 27245 states and 37588 transitions. [2023-11-22 21:04:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-11-22 21:04:40,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:04:40,659 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:04:40,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-22 21:04:40,659 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:04:40,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:04:40,660 INFO L85 PathProgramCache]: Analyzing trace with hash 127039183, now seen corresponding path program 1 times [2023-11-22 21:04:40,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:04:40,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127464454] [2023-11-22 21:04:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:40,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:04:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:41,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:04:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:41,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:04:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:41,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:04:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:41,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:04:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:41,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:04:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:41,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 21:04:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:41,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-22 21:04:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:41,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 354 proven. 8 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2023-11-22 21:04:41,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:04:41,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127464454] [2023-11-22 21:04:41,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127464454] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:04:41,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793311302] [2023-11-22 21:04:41,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:41,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:04:41,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:04:41,568 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:04:41,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-22 21:04:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:42,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 1754 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:04:42,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:04:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 1109 trivial. 0 not checked. [2023-11-22 21:04:42,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:04:42,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793311302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:04:42,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:04:42,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-22 21:04:42,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702539509] [2023-11-22 21:04:42,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:04:42,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:04:42,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:04:42,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:04:42,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:04:42,910 INFO L87 Difference]: Start difference. First operand 27245 states and 37588 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:04:45,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:04:45,028 INFO L93 Difference]: Finished difference Result 55415 states and 76769 transitions. [2023-11-22 21:04:45,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:04:45,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 440 [2023-11-22 21:04:45,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:04:45,064 INFO L225 Difference]: With dead ends: 55415 [2023-11-22 21:04:45,064 INFO L226 Difference]: Without dead ends: 28525 [2023-11-22 21:04:45,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:04:45,090 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 14 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:04:45,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 986 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-22 21:04:45,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28525 states. [2023-11-22 21:04:45,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28525 to 27245. [2023-11-22 21:04:45,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27245 states, 27191 states have (on average 1.3695708138722371) internal successors, (37240), 27195 states have internal predecessors, (37240), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-22 21:04:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27245 states to 27245 states and 37332 transitions. [2023-11-22 21:04:45,394 INFO L78 Accepts]: Start accepts. Automaton has 27245 states and 37332 transitions. Word has length 440 [2023-11-22 21:04:45,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:04:45,395 INFO L495 AbstractCegarLoop]: Abstraction has 27245 states and 37332 transitions. [2023-11-22 21:04:45,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:04:45,395 INFO L276 IsEmpty]: Start isEmpty. Operand 27245 states and 37332 transitions. [2023-11-22 21:04:45,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-11-22 21:04:45,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:04:45,425 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:04:45,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-11-22 21:04:45,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-22 21:04:45,644 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:04:45,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:04:45,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1678399151, now seen corresponding path program 1 times [2023-11-22 21:04:45,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:04:45,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835942820] [2023-11-22 21:04:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:45,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:04:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:46,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:04:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:46,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:04:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:46,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:04:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:46,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:04:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:46,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:04:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:46,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 21:04:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:46,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-22 21:04:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 354 proven. 8 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2023-11-22 21:04:46,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:04:46,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835942820] [2023-11-22 21:04:46,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835942820] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:04:46,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308495049] [2023-11-22 21:04:46,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:46,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:04:46,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:04:46,536 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:04:46,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-22 21:04:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:47,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 1751 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:04:47,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:04:47,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2023-11-22 21:04:47,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:04:47,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308495049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:04:47,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:04:47,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-22 21:04:47,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605626019] [2023-11-22 21:04:47,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:04:47,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:04:47,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:04:47,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:04:47,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:04:47,899 INFO L87 Difference]: Start difference. First operand 27245 states and 37332 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:04:50,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:04:50,111 INFO L93 Difference]: Finished difference Result 56183 states and 77537 transitions. [2023-11-22 21:04:50,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:04:50,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 440 [2023-11-22 21:04:50,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:04:50,141 INFO L225 Difference]: With dead ends: 56183 [2023-11-22 21:04:50,141 INFO L226 Difference]: Without dead ends: 29293 [2023-11-22 21:04:50,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:04:50,167 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 8 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:04:50,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 977 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-22 21:04:50,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29293 states. [2023-11-22 21:04:50,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29293 to 27757. [2023-11-22 21:04:50,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27757 states, 27703 states have (on average 1.3534996209796772) internal successors, (37496), 27707 states have internal predecessors, (37496), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-22 21:04:50,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27757 states to 27757 states and 37588 transitions. [2023-11-22 21:04:50,458 INFO L78 Accepts]: Start accepts. Automaton has 27757 states and 37588 transitions. Word has length 440 [2023-11-22 21:04:50,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:04:50,458 INFO L495 AbstractCegarLoop]: Abstraction has 27757 states and 37588 transitions. [2023-11-22 21:04:50,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:04:50,459 INFO L276 IsEmpty]: Start isEmpty. Operand 27757 states and 37588 transitions. [2023-11-22 21:04:50,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-11-22 21:04:50,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:04:50,487 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:04:50,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-22 21:04:50,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-22 21:04:50,697 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:04:50,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:04:50,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1255697325, now seen corresponding path program 1 times [2023-11-22 21:04:50,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:04:50,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881127789] [2023-11-22 21:04:50,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:50,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:04:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:51,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:04:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:51,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:04:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:51,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:04:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:51,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:04:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:51,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:04:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:51,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 21:04:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:51,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-22 21:04:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 354 proven. 8 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2023-11-22 21:04:51,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:04:51,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881127789] [2023-11-22 21:04:51,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881127789] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:04:51,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315871655] [2023-11-22 21:04:51,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:51,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:04:51,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:04:51,555 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:04:51,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-22 21:04:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:52,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:04:52,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:04:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 1137 trivial. 0 not checked. [2023-11-22 21:04:52,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:04:52,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315871655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:04:52,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:04:52,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-22 21:04:52,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902029755] [2023-11-22 21:04:52,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:04:52,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:04:52,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:04:52,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:04:52,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:04:52,948 INFO L87 Difference]: Start difference. First operand 27757 states and 37588 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:04:55,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:04:55,410 INFO L93 Difference]: Finished difference Result 56183 states and 76513 transitions. [2023-11-22 21:04:55,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:04:55,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 440 [2023-11-22 21:04:55,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:04:55,440 INFO L225 Difference]: With dead ends: 56183 [2023-11-22 21:04:55,440 INFO L226 Difference]: Without dead ends: 28781 [2023-11-22 21:04:55,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:04:55,464 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 2 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:04:55,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 968 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-22 21:04:55,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28781 states. [2023-11-22 21:04:55,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28781 to 28525. [2023-11-22 21:04:55,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28525 states, 28471 states have (on average 1.3259808225914087) internal successors, (37752), 28475 states have internal predecessors, (37752), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-22 21:04:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28525 states to 28525 states and 37844 transitions. [2023-11-22 21:04:55,925 INFO L78 Accepts]: Start accepts. Automaton has 28525 states and 37844 transitions. Word has length 440 [2023-11-22 21:04:55,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:04:55,925 INFO L495 AbstractCegarLoop]: Abstraction has 28525 states and 37844 transitions. [2023-11-22 21:04:55,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:04:55,926 INFO L276 IsEmpty]: Start isEmpty. Operand 28525 states and 37844 transitions. [2023-11-22 21:04:55,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-11-22 21:04:55,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:04:55,952 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:04:55,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-22 21:04:56,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-22 21:04:56,160 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:04:56,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:04:56,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1350326229, now seen corresponding path program 1 times [2023-11-22 21:04:56,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:04:56,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887559362] [2023-11-22 21:04:56,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:56,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:04:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:56,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:04:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:56,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:04:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:56,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:04:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:56,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:04:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:56,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:04:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:56,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 21:04:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:57,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-22 21:04:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 354 proven. 8 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2023-11-22 21:04:57,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:04:57,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887559362] [2023-11-22 21:04:57,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887559362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:04:57,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691894048] [2023-11-22 21:04:57,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:04:57,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:04:57,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:04:57,035 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:04:57,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-22 21:04:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:04:58,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 21:04:58,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:04:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2023-11-22 21:04:58,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:04:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2023-11-22 21:04:58,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691894048] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:04:58,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:04:58,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 22 [2023-11-22 21:04:58,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760368520] [2023-11-22 21:04:58,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:04:58,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-22 21:04:58,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:04:58,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-22 21:04:58,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2023-11-22 21:04:58,348 INFO L87 Difference]: Start difference. First operand 28525 states and 37844 transitions. Second operand has 22 states, 22 states have (on average 13.318181818181818) internal successors, (293), 21 states have internal predecessors, (293), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-22 21:05:06,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:05:06,218 INFO L93 Difference]: Finished difference Result 75365 states and 101403 transitions. [2023-11-22 21:05:06,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-22 21:05:06,219 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 13.318181818181818) internal successors, (293), 21 states have internal predecessors, (293), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 440 [2023-11-22 21:05:06,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:05:06,262 INFO L225 Difference]: With dead ends: 75365 [2023-11-22 21:05:06,263 INFO L226 Difference]: Without dead ends: 47013 [2023-11-22 21:05:06,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 881 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2023-11-22 21:05:06,296 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 265 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-11-22 21:05:06,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 2499 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-11-22 21:05:06,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47013 states. [2023-11-22 21:05:06,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47013 to 38053. [2023-11-22 21:05:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38053 states, 37991 states have (on average 1.3321049722302651) internal successors, (50608), 37995 states have internal predecessors, (50608), 54 states have call successors, (54), 7 states have call predecessors, (54), 7 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-22 21:05:06,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38053 states to 38053 states and 50716 transitions. [2023-11-22 21:05:06,705 INFO L78 Accepts]: Start accepts. Automaton has 38053 states and 50716 transitions. Word has length 440 [2023-11-22 21:05:06,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:05:06,706 INFO L495 AbstractCegarLoop]: Abstraction has 38053 states and 50716 transitions. [2023-11-22 21:05:06,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.318181818181818) internal successors, (293), 21 states have internal predecessors, (293), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-22 21:05:06,706 INFO L276 IsEmpty]: Start isEmpty. Operand 38053 states and 50716 transitions. [2023-11-22 21:05:06,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2023-11-22 21:05:06,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:05:06,742 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:05:06,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-11-22 21:05:06,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-11-22 21:05:06,960 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:05:06,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:05:06,961 INFO L85 PathProgramCache]: Analyzing trace with hash 241956699, now seen corresponding path program 1 times [2023-11-22 21:05:06,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:05:06,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179095637] [2023-11-22 21:05:06,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:05:06,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:05:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:07,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:05:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:07,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:05:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:07,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:05:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:07,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:05:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:07,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:05:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:07,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-22 21:05:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:07,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-22 21:05:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2023-11-22 21:05:07,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:05:07,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179095637] [2023-11-22 21:05:07,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179095637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:05:07,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:05:07,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 21:05:07,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343127451] [2023-11-22 21:05:07,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:05:07,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:05:07,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:05:07,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:05:07,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 21:05:07,559 INFO L87 Difference]: Start difference. First operand 38053 states and 50716 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 4 states have internal predecessors, (182), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:05:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:05:10,942 INFO L93 Difference]: Finished difference Result 77231 states and 102697 transitions. [2023-11-22 21:05:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:05:10,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 4 states have internal predecessors, (182), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 464 [2023-11-22 21:05:10,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:05:10,985 INFO L225 Difference]: With dead ends: 77231 [2023-11-22 21:05:10,985 INFO L226 Difference]: Without dead ends: 39589 [2023-11-22 21:05:11,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:05:11,018 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 10 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-22 21:05:11,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1127 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-22 21:05:11,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39589 states. [2023-11-22 21:05:11,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39589 to 38565. [2023-11-22 21:05:11,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38565 states, 38503 states have (on average 1.327688751525855) internal successors, (51120), 38507 states have internal predecessors, (51120), 54 states have call successors, (54), 7 states have call predecessors, (54), 7 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-22 21:05:11,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38565 states to 38565 states and 51228 transitions. [2023-11-22 21:05:11,427 INFO L78 Accepts]: Start accepts. Automaton has 38565 states and 51228 transitions. Word has length 464 [2023-11-22 21:05:11,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:05:11,427 INFO L495 AbstractCegarLoop]: Abstraction has 38565 states and 51228 transitions. [2023-11-22 21:05:11,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 4 states have internal predecessors, (182), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:05:11,428 INFO L276 IsEmpty]: Start isEmpty. Operand 38565 states and 51228 transitions. [2023-11-22 21:05:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2023-11-22 21:05:11,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:05:11,465 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:05:11,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-22 21:05:11,465 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:05:11,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:05:11,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1007771677, now seen corresponding path program 1 times [2023-11-22 21:05:11,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:05:11,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714023745] [2023-11-22 21:05:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:05:11,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:05:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:12,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:05:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:12,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:05:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:12,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:05:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:12,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:05:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:12,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:05:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:12,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-22 21:05:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:12,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-22 21:05:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:12,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 372 proven. 8 refuted. 0 times theorem prover too weak. 1065 trivial. 0 not checked. [2023-11-22 21:05:12,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:05:12,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714023745] [2023-11-22 21:05:12,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714023745] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:05:12,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968862538] [2023-11-22 21:05:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:05:12,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:05:12,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:05:12,392 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:05:12,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-22 21:05:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:13,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 21:05:13,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:05:13,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1438 trivial. 0 not checked. [2023-11-22 21:05:13,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:05:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1440 trivial. 0 not checked. [2023-11-22 21:05:13,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968862538] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:05:13,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:05:13,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2023-11-22 21:05:13,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634579869] [2023-11-22 21:05:13,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:05:13,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 21:05:13,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:05:13,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 21:05:13,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:05:13,911 INFO L87 Difference]: Start difference. First operand 38565 states and 51228 transitions. Second operand has 14 states, 14 states have (on average 20.214285714285715) internal successors, (283), 13 states have internal predecessors, (283), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-22 21:05:20,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:05:20,746 INFO L93 Difference]: Finished difference Result 84593 states and 112934 transitions. [2023-11-22 21:05:20,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 21:05:20,747 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.214285714285715) internal successors, (283), 13 states have internal predecessors, (283), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 464 [2023-11-22 21:05:20,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:05:20,791 INFO L225 Difference]: With dead ends: 84593 [2023-11-22 21:05:20,791 INFO L226 Difference]: Without dead ends: 46273 [2023-11-22 21:05:20,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 937 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-22 21:05:20,827 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 171 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-22 21:05:20,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1934 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-11-22 21:05:20,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46273 states. [2023-11-22 21:05:21,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46273 to 42945. [2023-11-22 21:05:21,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42945 states, 42879 states have (on average 1.3241913290888314) internal successors, (56780), 42883 states have internal predecessors, (56780), 58 states have call successors, (58), 7 states have call predecessors, (58), 7 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-11-22 21:05:21,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42945 states to 42945 states and 56896 transitions. [2023-11-22 21:05:21,437 INFO L78 Accepts]: Start accepts. Automaton has 42945 states and 56896 transitions. Word has length 464 [2023-11-22 21:05:21,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:05:21,437 INFO L495 AbstractCegarLoop]: Abstraction has 42945 states and 56896 transitions. [2023-11-22 21:05:21,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.214285714285715) internal successors, (283), 13 states have internal predecessors, (283), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-22 21:05:21,437 INFO L276 IsEmpty]: Start isEmpty. Operand 42945 states and 56896 transitions. [2023-11-22 21:05:21,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2023-11-22 21:05:21,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:05:21,480 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:05:21,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-11-22 21:05:21,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-22 21:05:21,695 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:05:21,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:05:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash 546242661, now seen corresponding path program 1 times [2023-11-22 21:05:21,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:05:21,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594473146] [2023-11-22 21:05:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:05:21,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:05:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:22,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:05:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:22,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:05:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:22,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:05:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:22,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:05:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:22,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:05:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:22,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 21:05:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:22,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 21:05:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 1149 trivial. 0 not checked. [2023-11-22 21:05:22,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:05:22,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594473146] [2023-11-22 21:05:22,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594473146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:05:22,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:05:22,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 21:05:22,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472164870] [2023-11-22 21:05:22,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:05:22,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:05:22,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:05:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:05:22,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 21:05:22,364 INFO L87 Difference]: Start difference. First operand 42945 states and 56896 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:05:25,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:05:25,291 INFO L93 Difference]: Finished difference Result 88011 states and 117069 transitions. [2023-11-22 21:05:25,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:05:25,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 476 [2023-11-22 21:05:25,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:05:25,339 INFO L225 Difference]: With dead ends: 88011 [2023-11-22 21:05:25,339 INFO L226 Difference]: Without dead ends: 45505 [2023-11-22 21:05:25,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:05:25,378 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 13 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-22 21:05:25,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1130 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-22 21:05:25,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45505 states. [2023-11-22 21:05:25,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45505 to 43457. [2023-11-22 21:05:25,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43457 states, 43391 states have (on average 1.3203659745108434) internal successors, (57292), 43395 states have internal predecessors, (57292), 58 states have call successors, (58), 7 states have call predecessors, (58), 7 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-11-22 21:05:25,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43457 states to 43457 states and 57408 transitions. [2023-11-22 21:05:25,854 INFO L78 Accepts]: Start accepts. Automaton has 43457 states and 57408 transitions. Word has length 476 [2023-11-22 21:05:25,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:05:25,854 INFO L495 AbstractCegarLoop]: Abstraction has 43457 states and 57408 transitions. [2023-11-22 21:05:25,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:05:25,854 INFO L276 IsEmpty]: Start isEmpty. Operand 43457 states and 57408 transitions. [2023-11-22 21:05:25,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2023-11-22 21:05:25,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:05:25,895 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2023-11-22 21:05:25,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-22 21:05:25,895 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:05:25,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:05:25,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1734879257, now seen corresponding path program 1 times [2023-11-22 21:05:25,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:05:25,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387460173] [2023-11-22 21:05:25,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:05:25,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:05:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:26,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:05:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:26,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:05:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:26,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:05:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:26,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:05:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:05:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:26,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 21:05:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:26,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 21:05:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:26,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 1149 trivial. 0 not checked. [2023-11-22 21:05:26,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:05:26,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387460173] [2023-11-22 21:05:26,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387460173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:05:26,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:05:26,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 21:05:26,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750355703] [2023-11-22 21:05:26,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:05:26,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:05:26,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:05:26,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:05:26,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 21:05:26,357 INFO L87 Difference]: Start difference. First operand 43457 states and 57408 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:05:29,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:05:29,658 INFO L93 Difference]: Finished difference Result 87243 states and 115277 transitions. [2023-11-22 21:05:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:05:29,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 476 [2023-11-22 21:05:29,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:05:29,706 INFO L225 Difference]: With dead ends: 87243 [2023-11-22 21:05:29,707 INFO L226 Difference]: Without dead ends: 44225 [2023-11-22 21:05:29,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:05:29,745 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 4 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:05:29,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1129 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-22 21:05:29,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44225 states. [2023-11-22 21:05:30,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44225 to 43969. [2023-11-22 21:05:30,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43969 states, 43903 states have (on average 1.3166298430631165) internal successors, (57804), 43907 states have internal predecessors, (57804), 58 states have call successors, (58), 7 states have call predecessors, (58), 7 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-11-22 21:05:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43969 states to 43969 states and 57920 transitions. [2023-11-22 21:05:30,191 INFO L78 Accepts]: Start accepts. Automaton has 43969 states and 57920 transitions. Word has length 476 [2023-11-22 21:05:30,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:05:30,192 INFO L495 AbstractCegarLoop]: Abstraction has 43969 states and 57920 transitions. [2023-11-22 21:05:30,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:05:30,192 INFO L276 IsEmpty]: Start isEmpty. Operand 43969 states and 57920 transitions. [2023-11-22 21:05:30,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2023-11-22 21:05:30,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:05:30,232 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:05:30,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-22 21:05:30,232 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:05:30,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:05:30,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1546906219, now seen corresponding path program 2 times [2023-11-22 21:05:30,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:05:30,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041836362] [2023-11-22 21:05:30,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:05:30,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:05:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:31,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:05:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:31,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:05:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:31,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:05:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:31,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:05:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:31,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:05:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:31,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 21:05:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:31,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 21:05:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 456 proven. 24 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2023-11-22 21:05:31,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:05:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041836362] [2023-11-22 21:05:31,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041836362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:05:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363113990] [2023-11-22 21:05:31,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 21:05:31,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:05:31,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:05:31,180 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:05:31,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-22 21:05:34,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 21:05:34,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:05:34,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 1760 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 21:05:34,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:05:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 1438 trivial. 0 not checked. [2023-11-22 21:05:34,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:05:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 1440 trivial. 0 not checked. [2023-11-22 21:05:34,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363113990] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:05:34,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:05:34,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 22 [2023-11-22 21:05:34,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936596382] [2023-11-22 21:05:34,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:05:34,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-22 21:05:34,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:05:34,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-22 21:05:34,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2023-11-22 21:05:34,283 INFO L87 Difference]: Start difference. First operand 43969 states and 57920 transitions. Second operand has 22 states, 22 states have (on average 14.227272727272727) internal successors, (313), 21 states have internal predecessors, (313), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-22 21:05:40,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:05:40,837 INFO L93 Difference]: Finished difference Result 88745 states and 115826 transitions. [2023-11-22 21:05:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-22 21:05:40,837 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 14.227272727272727) internal successors, (313), 21 states have internal predecessors, (313), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 476 [2023-11-22 21:05:40,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:05:40,876 INFO L225 Difference]: With dead ends: 88745 [2023-11-22 21:05:40,877 INFO L226 Difference]: Without dead ends: 45049 [2023-11-22 21:05:40,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 953 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2023-11-22 21:05:40,910 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 330 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:05:40,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1875 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-22 21:05:40,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45049 states. [2023-11-22 21:05:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45049 to 42745. [2023-11-22 21:05:41,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42745 states, 42671 states have (on average 1.3019615195331724) internal successors, (55556), 42675 states have internal predecessors, (55556), 66 states have call successors, (66), 7 states have call predecessors, (66), 7 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-22 21:05:41,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42745 states to 42745 states and 55688 transitions. [2023-11-22 21:05:41,317 INFO L78 Accepts]: Start accepts. Automaton has 42745 states and 55688 transitions. Word has length 476 [2023-11-22 21:05:41,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:05:41,317 INFO L495 AbstractCegarLoop]: Abstraction has 42745 states and 55688 transitions. [2023-11-22 21:05:41,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 14.227272727272727) internal successors, (313), 21 states have internal predecessors, (313), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-22 21:05:41,317 INFO L276 IsEmpty]: Start isEmpty. Operand 42745 states and 55688 transitions. [2023-11-22 21:05:41,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2023-11-22 21:05:41,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:05:41,355 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:05:41,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-11-22 21:05:41,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-22 21:05:41,571 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:05:41,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:05:41,571 INFO L85 PathProgramCache]: Analyzing trace with hash 839867125, now seen corresponding path program 3 times [2023-11-22 21:05:41,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:05:41,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11184600] [2023-11-22 21:05:41,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:05:41,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:05:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:42,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:05:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:42,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:05:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:42,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:05:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:42,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:05:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:42,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:05:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:42,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-11-22 21:05:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:42,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-11-22 21:05:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2023-11-22 21:05:42,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:05:42,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11184600] [2023-11-22 21:05:42,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11184600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:05:42,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:05:42,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 21:05:42,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020808544] [2023-11-22 21:05:42,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:05:42,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 21:05:42,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:05:42,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 21:05:42,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:05:42,263 INFO L87 Difference]: Start difference. First operand 42745 states and 55688 transitions. Second operand has 6 states, 6 states have (on average 35.0) internal successors, (210), 5 states have internal predecessors, (210), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:05:45,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:05:45,953 INFO L93 Difference]: Finished difference Result 101123 states and 132501 transitions. [2023-11-22 21:05:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:05:45,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 5 states have internal predecessors, (210), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 500 [2023-11-22 21:05:45,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:05:46,025 INFO L225 Difference]: With dead ends: 101123 [2023-11-22 21:05:46,025 INFO L226 Difference]: Without dead ends: 58873 [2023-11-22 21:05:46,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:05:46,067 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 65 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-22 21:05:46,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1252 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-22 21:05:46,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58873 states. [2023-11-22 21:05:46,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58873 to 44793. [2023-11-22 21:05:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44793 states, 44719 states have (on average 1.2881325611037815) internal successors, (57604), 44723 states have internal predecessors, (57604), 66 states have call successors, (66), 7 states have call predecessors, (66), 7 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-22 21:05:46,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44793 states to 44793 states and 57736 transitions. [2023-11-22 21:05:46,710 INFO L78 Accepts]: Start accepts. Automaton has 44793 states and 57736 transitions. Word has length 500 [2023-11-22 21:05:46,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:05:46,710 INFO L495 AbstractCegarLoop]: Abstraction has 44793 states and 57736 transitions. [2023-11-22 21:05:46,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 5 states have internal predecessors, (210), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:05:46,711 INFO L276 IsEmpty]: Start isEmpty. Operand 44793 states and 57736 transitions. [2023-11-22 21:05:46,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2023-11-22 21:05:46,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:05:46,751 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:05:46,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-22 21:05:46,752 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:05:46,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:05:46,752 INFO L85 PathProgramCache]: Analyzing trace with hash 359473001, now seen corresponding path program 4 times [2023-11-22 21:05:46,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:05:46,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044652033] [2023-11-22 21:05:46,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:05:46,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:05:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:47,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:05:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:47,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:05:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:47,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:05:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:47,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:05:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:47,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:05:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:47,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-11-22 21:05:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-11-22 21:05:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 1364 trivial. 0 not checked. [2023-11-22 21:05:47,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:05:47,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044652033] [2023-11-22 21:05:47,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044652033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:05:47,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:05:47,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 21:05:47,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806593619] [2023-11-22 21:05:47,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:05:47,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 21:05:47,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:05:47,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 21:05:47,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:05:47,477 INFO L87 Difference]: Start difference. First operand 44793 states and 57736 transitions. Second operand has 6 states, 6 states have (on average 38.0) internal successors, (228), 5 states have internal predecessors, (228), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:05:50,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:05:50,755 INFO L93 Difference]: Finished difference Result 93699 states and 120469 transitions. [2023-11-22 21:05:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:05:50,756 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 5 states have internal predecessors, (228), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 500 [2023-11-22 21:05:50,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:05:50,812 INFO L225 Difference]: With dead ends: 93699 [2023-11-22 21:05:50,813 INFO L226 Difference]: Without dead ends: 49401 [2023-11-22 21:05:50,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:05:50,852 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 128 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:05:50,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1107 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-22 21:05:50,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49401 states. [2023-11-22 21:05:51,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49401 to 44793. [2023-11-22 21:05:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44793 states, 44719 states have (on average 1.2824079250430467) internal successors, (57348), 44723 states have internal predecessors, (57348), 66 states have call successors, (66), 7 states have call predecessors, (66), 7 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-22 21:05:51,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44793 states to 44793 states and 57480 transitions. [2023-11-22 21:05:51,289 INFO L78 Accepts]: Start accepts. Automaton has 44793 states and 57480 transitions. Word has length 500 [2023-11-22 21:05:51,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:05:51,291 INFO L495 AbstractCegarLoop]: Abstraction has 44793 states and 57480 transitions. [2023-11-22 21:05:51,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 5 states have internal predecessors, (228), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:05:51,291 INFO L276 IsEmpty]: Start isEmpty. Operand 44793 states and 57480 transitions. [2023-11-22 21:05:51,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2023-11-22 21:05:51,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:05:51,330 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:05:51,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-11-22 21:05:51,330 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:05:51,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:05:51,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1824877805, now seen corresponding path program 1 times [2023-11-22 21:05:51,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:05:51,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584134814] [2023-11-22 21:05:51,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:05:51,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:05:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:52,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:05:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:52,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:05:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:52,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:05:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:52,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:05:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:52,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:05:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:52,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-11-22 21:05:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:52,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-11-22 21:05:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 1351 trivial. 0 not checked. [2023-11-22 21:05:52,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:05:52,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584134814] [2023-11-22 21:05:52,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584134814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:05:52,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:05:52,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 21:05:52,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221150603] [2023-11-22 21:05:52,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:05:52,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 21:05:52,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:05:52,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 21:05:52,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:05:52,234 INFO L87 Difference]: Start difference. First operand 44793 states and 57480 transitions. Second operand has 6 states, 6 states have (on average 39.666666666666664) internal successors, (238), 5 states have internal predecessors, (238), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:05:56,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:05:56,133 INFO L93 Difference]: Finished difference Result 93187 states and 119445 transitions. [2023-11-22 21:05:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:05:56,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.666666666666664) internal successors, (238), 5 states have internal predecessors, (238), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 500 [2023-11-22 21:05:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:05:56,313 INFO L225 Difference]: With dead ends: 93187 [2023-11-22 21:05:56,313 INFO L226 Difference]: Without dead ends: 48889 [2023-11-22 21:05:56,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:05:56,325 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 54 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-22 21:05:56,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1295 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-22 21:05:56,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48889 states. [2023-11-22 21:05:56,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48889 to 44793. [2023-11-22 21:05:56,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44793 states, 44719 states have (on average 1.2766832889823119) internal successors, (57092), 44723 states have internal predecessors, (57092), 66 states have call successors, (66), 7 states have call predecessors, (66), 7 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-22 21:05:56,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44793 states to 44793 states and 57224 transitions. [2023-11-22 21:05:56,757 INFO L78 Accepts]: Start accepts. Automaton has 44793 states and 57224 transitions. Word has length 500 [2023-11-22 21:05:56,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:05:56,758 INFO L495 AbstractCegarLoop]: Abstraction has 44793 states and 57224 transitions. [2023-11-22 21:05:56,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.666666666666664) internal successors, (238), 5 states have internal predecessors, (238), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:05:56,758 INFO L276 IsEmpty]: Start isEmpty. Operand 44793 states and 57224 transitions. [2023-11-22 21:05:56,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2023-11-22 21:05:56,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:05:56,798 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:05:56,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-11-22 21:05:56,798 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:05:56,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:05:56,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1332251631, now seen corresponding path program 1 times [2023-11-22 21:05:56,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:05:56,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090772424] [2023-11-22 21:05:56,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:05:56,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:05:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:57,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:05:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:57,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:05:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:57,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:05:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:57,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:05:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:57,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:05:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:57,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-11-22 21:05:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:57,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-11-22 21:05:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:05:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 1502 trivial. 0 not checked. [2023-11-22 21:05:57,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:05:57,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090772424] [2023-11-22 21:05:57,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090772424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:05:57,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:05:57,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 21:05:57,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018621324] [2023-11-22 21:05:57,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:05:57,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:05:57,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:05:57,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:05:57,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 21:05:57,372 INFO L87 Difference]: Start difference. First operand 44793 states and 57224 transitions. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:06:01,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:06:01,001 INFO L93 Difference]: Finished difference Result 93699 states and 120213 transitions. [2023-11-22 21:06:01,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:06:01,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 500 [2023-11-22 21:06:01,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:06:01,064 INFO L225 Difference]: With dead ends: 93699 [2023-11-22 21:06:01,064 INFO L226 Difference]: Without dead ends: 49401 [2023-11-22 21:06:01,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:06:01,101 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 15 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:06:01,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1161 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-22 21:06:01,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49401 states. [2023-11-22 21:06:01,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49401 to 45305. [2023-11-22 21:06:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45305 states, 45231 states have (on average 1.267891490349539) internal successors, (57348), 45235 states have internal predecessors, (57348), 66 states have call successors, (66), 7 states have call predecessors, (66), 7 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-22 21:06:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45305 states to 45305 states and 57480 transitions. [2023-11-22 21:06:01,564 INFO L78 Accepts]: Start accepts. Automaton has 45305 states and 57480 transitions. Word has length 500 [2023-11-22 21:06:01,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:06:01,565 INFO L495 AbstractCegarLoop]: Abstraction has 45305 states and 57480 transitions. [2023-11-22 21:06:01,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 21:06:01,565 INFO L276 IsEmpty]: Start isEmpty. Operand 45305 states and 57480 transitions. [2023-11-22 21:06:01,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2023-11-22 21:06:01,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:06:01,723 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:06:01,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-11-22 21:06:01,723 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:06:01,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:06:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash 116097905, now seen corresponding path program 1 times [2023-11-22 21:06:01,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:06:01,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396102583] [2023-11-22 21:06:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:06:01,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:06:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:02,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:06:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:02,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:06:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:02,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:06:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:02,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:06:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:02,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:06:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:02,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-11-22 21:06:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:02,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-11-22 21:06:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2023-11-22 21:06:02,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:06:02,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396102583] [2023-11-22 21:06:02,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396102583] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:06:02,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063412432] [2023-11-22 21:06:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:06:02,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:06:02,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:06:02,264 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:06:02,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-22 21:06:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:03,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 21:06:03,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:06:03,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2023-11-22 21:06:03,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:06:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2023-11-22 21:06:03,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063412432] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:06:03,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:06:03,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2023-11-22 21:06:03,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656372089] [2023-11-22 21:06:03,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:06:03,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 21:06:03,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:06:03,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 21:06:03,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:06:03,690 INFO L87 Difference]: Start difference. First operand 45305 states and 57480 transitions. Second operand has 10 states, 10 states have (on average 17.3) internal successors, (173), 9 states have internal predecessors, (173), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:06:06,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:06:06,317 INFO L93 Difference]: Finished difference Result 90291 states and 114556 transitions. [2023-11-22 21:06:06,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:06:06,317 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.3) internal successors, (173), 9 states have internal predecessors, (173), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 500 [2023-11-22 21:06:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:06:06,357 INFO L225 Difference]: With dead ends: 90291 [2023-11-22 21:06:06,357 INFO L226 Difference]: Without dead ends: 45333 [2023-11-22 21:06:06,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1017 GetRequests, 1009 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:06:06,394 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 47 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:06:06,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 825 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-22 21:06:06,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45333 states. [2023-11-22 21:06:06,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45333 to 45333. [2023-11-22 21:06:06,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45333 states, 45255 states have (on average 1.2678378079770192) internal successors, (57376), 45259 states have internal predecessors, (57376), 70 states have call successors, (70), 7 states have call predecessors, (70), 7 states have return successors, (70), 67 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-22 21:06:06,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45333 states to 45333 states and 57516 transitions. [2023-11-22 21:06:06,815 INFO L78 Accepts]: Start accepts. Automaton has 45333 states and 57516 transitions. Word has length 500 [2023-11-22 21:06:06,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:06:06,815 INFO L495 AbstractCegarLoop]: Abstraction has 45333 states and 57516 transitions. [2023-11-22 21:06:06,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.3) internal successors, (173), 9 states have internal predecessors, (173), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:06:06,815 INFO L276 IsEmpty]: Start isEmpty. Operand 45333 states and 57516 transitions. [2023-11-22 21:06:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-11-22 21:06:06,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:06:06,854 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:06:06,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-11-22 21:06:07,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:06:07,064 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:06:07,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:06:07,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1598908657, now seen corresponding path program 2 times [2023-11-22 21:06:07,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:06:07,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887757179] [2023-11-22 21:06:07,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:06:07,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:06:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:07,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:06:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:07,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:06:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:07,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:06:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:07,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:06:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:07,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:06:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:07,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-22 21:06:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:07,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-22 21:06:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:07,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2023-11-22 21:06:07,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:06:07,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887757179] [2023-11-22 21:06:07,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887757179] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:06:07,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720462387] [2023-11-22 21:06:07,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 21:06:07,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:06:07,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:06:07,783 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:06:07,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-22 21:06:10,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 21:06:10,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:06:10,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 21:06:10,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:06:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2023-11-22 21:06:10,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:06:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2023-11-22 21:06:10,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720462387] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:06:10,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:06:10,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2023-11-22 21:06:10,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939733645] [2023-11-22 21:06:10,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:06:10,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-22 21:06:10,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:06:10,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-22 21:06:10,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2023-11-22 21:06:10,797 INFO L87 Difference]: Start difference. First operand 45333 states and 57516 transitions. Second operand has 18 states, 18 states have (on average 10.944444444444445) internal successors, (197), 17 states have internal predecessors, (197), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:06:12,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 21:06:14,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:06:14,211 INFO L93 Difference]: Finished difference Result 90347 states and 114632 transitions. [2023-11-22 21:06:14,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-22 21:06:14,212 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.944444444444445) internal successors, (197), 17 states have internal predecessors, (197), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 512 [2023-11-22 21:06:14,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:06:14,252 INFO L225 Difference]: With dead ends: 90347 [2023-11-22 21:06:14,253 INFO L226 Difference]: Without dead ends: 45389 [2023-11-22 21:06:14,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 1029 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2023-11-22 21:06:14,287 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 90 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-22 21:06:14,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1173 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-22 21:06:14,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45389 states. [2023-11-22 21:06:14,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45389 to 45389. [2023-11-22 21:06:14,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45389 states, 45303 states have (on average 1.2677306138666313) internal successors, (57432), 45307 states have internal predecessors, (57432), 78 states have call successors, (78), 7 states have call predecessors, (78), 7 states have return successors, (78), 75 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-22 21:06:14,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45389 states to 45389 states and 57588 transitions. [2023-11-22 21:06:14,835 INFO L78 Accepts]: Start accepts. Automaton has 45389 states and 57588 transitions. Word has length 512 [2023-11-22 21:06:14,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:06:14,835 INFO L495 AbstractCegarLoop]: Abstraction has 45389 states and 57588 transitions. [2023-11-22 21:06:14,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.944444444444445) internal successors, (197), 17 states have internal predecessors, (197), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 21:06:14,835 INFO L276 IsEmpty]: Start isEmpty. Operand 45389 states and 57588 transitions. [2023-11-22 21:06:14,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2023-11-22 21:06:14,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:06:14,877 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:06:14,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-22 21:06:15,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:06:15,096 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:06:15,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:06:15,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1995207665, now seen corresponding path program 3 times [2023-11-22 21:06:15,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:06:15,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139828290] [2023-11-22 21:06:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:06:15,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:06:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:15,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-22 21:06:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:15,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 21:06:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:15,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 21:06:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:15,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-22 21:06:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:15,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 21:06:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:15,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-11-22 21:06:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:15,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-11-22 21:06:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:06:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2009 backedges. 0 proven. 668 refuted. 0 times theorem prover too weak. 1341 trivial. 0 not checked. [2023-11-22 21:06:15,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:06:15,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139828290] [2023-11-22 21:06:15,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139828290] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:06:15,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246941942] [2023-11-22 21:06:15,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 21:06:15,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:06:15,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:06:15,973 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:06:15,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process Killed by 15