./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label49.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label49.c -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 efd9f0184b4cf1cfcb5f9b1d78709aac2b2266fe0e62322fe4e22ac75e57a068 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:30:42,589 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:30:42,648 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 16:30:42,654 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:30:42,655 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:30:42,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:30:42,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:30:42,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:30:42,678 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:30:42,681 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:30:42,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:30:42,681 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:30:42,681 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:30:42,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:30:42,682 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:30:42,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:30:42,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:30:42,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:30:42,682 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 16:30:42,682 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:30:42,682 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:30:42,684 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:30:42,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:30:42,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:30:42,684 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:30:42,685 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:30:42,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:30:42,685 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:30:42,685 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:30:42,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:30:42,685 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:30:42,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:30:42,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:30:42,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:30:42,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:30:42,687 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:30:42,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 16:30:42,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 16:30:42,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:30:42,688 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:30:42,688 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:30:42,688 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:30:42,688 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efd9f0184b4cf1cfcb5f9b1d78709aac2b2266fe0e62322fe4e22ac75e57a068 [2024-10-12 16:30:42,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:30:42,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:30:42,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:30:42,897 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:30:42,897 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:30:42,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label49.c [2024-10-12 16:30:44,116 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:30:44,379 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:30:44,379 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label49.c [2024-10-12 16:30:44,404 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0557d1e7e/ffea0fde0e494d0ca6bd91cc53cb0a65/FLAG33781aab1 [2024-10-12 16:30:44,676 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0557d1e7e/ffea0fde0e494d0ca6bd91cc53cb0a65 [2024-10-12 16:30:44,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:30:44,679 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:30:44,680 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:30:44,680 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:30:44,684 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:30:44,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:30:44" (1/1) ... [2024-10-12 16:30:44,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14089ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:44, skipping insertion in model container [2024-10-12 16:30:44,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:30:44" (1/1) ... [2024-10-12 16:30:44,742 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:30:44,914 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label49.c[2362,2375] [2024-10-12 16:30:45,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:30:45,341 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:30:45,357 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label49.c[2362,2375] [2024-10-12 16:30:45,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:30:45,540 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:30:45,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:45 WrapperNode [2024-10-12 16:30:45,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:30:45,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:30:45,541 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:30:45,541 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:30:45,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:45" (1/1) ... [2024-10-12 16:30:45,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:45" (1/1) ... [2024-10-12 16:30:45,743 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-10-12 16:30:45,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:30:45,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:30:45,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:30:45,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:30:45,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:45" (1/1) ... [2024-10-12 16:30:45,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:45" (1/1) ... [2024-10-12 16:30:45,778 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:45" (1/1) ... [2024-10-12 16:30:45,911 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 16:30:45,911 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:45" (1/1) ... [2024-10-12 16:30:45,911 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:45" (1/1) ... [2024-10-12 16:30:46,028 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:45" (1/1) ... [2024-10-12 16:30:46,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:45" (1/1) ... [2024-10-12 16:30:46,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:45" (1/1) ... [2024-10-12 16:30:46,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:45" (1/1) ... [2024-10-12 16:30:46,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:30:46,105 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:30:46,105 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:30:46,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:30:46,106 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:45" (1/1) ... [2024-10-12 16:30:46,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:30:46,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:30:46,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 16:30:46,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 16:30:46,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:30:46,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 16:30:46,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:30:46,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:30:46,218 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:30:46,220 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:30:48,578 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-10-12 16:30:48,578 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:30:48,631 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:30:48,631 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 16:30:48,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:30:48 BoogieIcfgContainer [2024-10-12 16:30:48,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:30:48,637 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:30:48,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:30:48,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:30:48,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:30:44" (1/3) ... [2024-10-12 16:30:48,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1243ae6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:30:48, skipping insertion in model container [2024-10-12 16:30:48,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:45" (2/3) ... [2024-10-12 16:30:48,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1243ae6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:30:48, skipping insertion in model container [2024-10-12 16:30:48,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:30:48" (3/3) ... [2024-10-12 16:30:48,643 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label49.c [2024-10-12 16:30:48,657 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:30:48,657 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:30:48,717 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:30:48,722 INFO L333 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, 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;@6de70e5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:30:48,722 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:30:48,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:48,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-12 16:30:48,733 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:30:48,734 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:30:48,735 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:30:48,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:30:48,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1438677573, now seen corresponding path program 1 times [2024-10-12 16:30:48,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:30:48,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715648044] [2024-10-12 16:30:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:30:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:30:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:30:48,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:30:48,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:30:48,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715648044] [2024-10-12 16:30:48,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715648044] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:30:48,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:30:48,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:30:48,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942728872] [2024-10-12 16:30:48,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:30:48,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:30:48,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:30:48,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:30:48,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:30:48,887 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:48,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:30:48,949 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2024-10-12 16:30:48,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:30:48,954 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-12 16:30:48,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:30:48,967 INFO L225 Difference]: With dead ends: 1055 [2024-10-12 16:30:48,968 INFO L226 Difference]: Without dead ends: 526 [2024-10-12 16:30:48,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:30:48,975 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:30:48,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 16:30:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-12 16:30:49,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-10-12 16:30:49,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:49,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2024-10-12 16:30:49,028 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 14 [2024-10-12 16:30:49,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:30:49,028 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2024-10-12 16:30:49,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:49,029 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2024-10-12 16:30:49,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-12 16:30:49,029 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:30:49,029 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:30:49,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 16:30:49,030 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:30:49,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:30:49,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1933770537, now seen corresponding path program 1 times [2024-10-12 16:30:49,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:30:49,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191691498] [2024-10-12 16:30:49,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:30:49,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:30:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:30:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:30:49,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:30:49,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191691498] [2024-10-12 16:30:49,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191691498] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:30:49,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:30:49,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:30:49,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913526608] [2024-10-12 16:30:49,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:30:49,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:30:49,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:30:49,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:30:49,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:30:49,118 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:50,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:30:50,913 INFO L93 Difference]: Finished difference Result 1501 states and 2698 transitions. [2024-10-12 16:30:50,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:30:50,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-12 16:30:50,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:30:50,918 INFO L225 Difference]: With dead ends: 1501 [2024-10-12 16:30:50,918 INFO L226 Difference]: Without dead ends: 976 [2024-10-12 16:30:50,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:30:50,920 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 457 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:30:50,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 448 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-12 16:30:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2024-10-12 16:30:50,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2024-10-12 16:30:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.5541795665634675) internal successors, (1506), 969 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2024-10-12 16:30:50,947 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 14 [2024-10-12 16:30:50,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:30:50,948 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2024-10-12 16:30:50,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:50,948 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2024-10-12 16:30:50,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 16:30:50,950 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:30:50,950 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 16:30:50,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 16:30:50,950 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:30:50,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:30:50,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1651561506, now seen corresponding path program 1 times [2024-10-12 16:30:50,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:30:50,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908576723] [2024-10-12 16:30:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:30:50,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:30:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:30:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:30:51,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:30:51,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908576723] [2024-10-12 16:30:51,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908576723] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:30:51,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:30:51,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:30:51,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261453230] [2024-10-12 16:30:51,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:30:51,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:30:51,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:30:51,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:30:51,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:30:51,115 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:52,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:30:52,823 INFO L93 Difference]: Finished difference Result 2814 states and 4381 transitions. [2024-10-12 16:30:52,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:30:52,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-10-12 16:30:52,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:30:52,829 INFO L225 Difference]: With dead ends: 2814 [2024-10-12 16:30:52,829 INFO L226 Difference]: Without dead ends: 1845 [2024-10-12 16:30:52,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:30:52,832 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:30:52,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 578 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-12 16:30:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2024-10-12 16:30:52,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1840. [2024-10-12 16:30:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3507340946166395) internal successors, (2484), 1839 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:52,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2484 transitions. [2024-10-12 16:30:52,863 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2484 transitions. Word has length 81 [2024-10-12 16:30:52,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:30:52,864 INFO L471 AbstractCegarLoop]: Abstraction has 1840 states and 2484 transitions. [2024-10-12 16:30:52,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:52,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2484 transitions. [2024-10-12 16:30:52,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-12 16:30:52,868 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:30:52,868 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 16:30:52,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 16:30:52,869 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:30:52,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:30:52,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1552889564, now seen corresponding path program 1 times [2024-10-12 16:30:52,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:30:52,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535419989] [2024-10-12 16:30:52,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:30:52,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:30:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:30:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:30:53,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:30:53,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535419989] [2024-10-12 16:30:53,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535419989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:30:53,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:30:53,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:30:53,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519197943] [2024-10-12 16:30:53,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:30:53,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:30:53,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:30:53,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:30:53,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:30:53,114 INFO L87 Difference]: Start difference. First operand 1840 states and 2484 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:55,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:30:55,616 INFO L93 Difference]: Finished difference Result 6764 states and 9261 transitions. [2024-10-12 16:30:55,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:30:55,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-12 16:30:55,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:30:55,645 INFO L225 Difference]: With dead ends: 6764 [2024-10-12 16:30:55,646 INFO L226 Difference]: Without dead ends: 4925 [2024-10-12 16:30:55,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:30:55,654 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 951 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:30:55,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 283 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-12 16:30:55,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2024-10-12 16:30:55,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 4874. [2024-10-12 16:30:55,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 4873 states have (on average 1.2866817155756207) internal successors, (6270), 4873 states have internal predecessors, (6270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:55,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 6270 transitions. [2024-10-12 16:30:55,727 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 6270 transitions. Word has length 84 [2024-10-12 16:30:55,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:30:55,728 INFO L471 AbstractCegarLoop]: Abstraction has 4874 states and 6270 transitions. [2024-10-12 16:30:55,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:55,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 6270 transitions. [2024-10-12 16:30:55,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-10-12 16:30:55,734 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:30:55,734 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:30:55,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 16:30:55,735 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:30:55,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:30:55,737 INFO L85 PathProgramCache]: Analyzing trace with hash 630957273, now seen corresponding path program 1 times [2024-10-12 16:30:55,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:30:55,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337035397] [2024-10-12 16:30:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:30:55,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:30:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:30:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-12 16:30:55,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:30:55,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337035397] [2024-10-12 16:30:55,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337035397] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:30:55,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:30:55,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:30:55,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490630005] [2024-10-12 16:30:55,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:30:55,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:30:55,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:30:55,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:30:55,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:30:55,960 INFO L87 Difference]: Start difference. First operand 4874 states and 6270 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:57,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:30:57,255 INFO L93 Difference]: Finished difference Result 14435 states and 18543 transitions. [2024-10-12 16:30:57,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:30:57,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2024-10-12 16:30:57,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:30:57,274 INFO L225 Difference]: With dead ends: 14435 [2024-10-12 16:30:57,274 INFO L226 Difference]: Without dead ends: 8276 [2024-10-12 16:30:57,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:30:57,281 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:30:57,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 588 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 16:30:57,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8276 states. [2024-10-12 16:30:57,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8276 to 6143. [2024-10-12 16:30:57,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6143 states, 6142 states have (on average 1.1909801367632693) internal successors, (7315), 6142 states have internal predecessors, (7315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:57,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6143 states to 6143 states and 7315 transitions. [2024-10-12 16:30:57,396 INFO L78 Accepts]: Start accepts. Automaton has 6143 states and 7315 transitions. Word has length 155 [2024-10-12 16:30:57,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:30:57,396 INFO L471 AbstractCegarLoop]: Abstraction has 6143 states and 7315 transitions. [2024-10-12 16:30:57,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:57,397 INFO L276 IsEmpty]: Start isEmpty. Operand 6143 states and 7315 transitions. [2024-10-12 16:30:57,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-12 16:30:57,399 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:30:57,399 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:30:57,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 16:30:57,399 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:30:57,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:30:57,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1282137387, now seen corresponding path program 1 times [2024-10-12 16:30:57,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:30:57,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622686476] [2024-10-12 16:30:57,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:30:57,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:30:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:30:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-12 16:30:57,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:30:57,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622686476] [2024-10-12 16:30:57,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622686476] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:30:57,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:30:57,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:30:57,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325256388] [2024-10-12 16:30:57,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:30:57,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:30:57,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:30:57,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:30:57,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:30:57,573 INFO L87 Difference]: Start difference. First operand 6143 states and 7315 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:59,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:30:59,001 INFO L93 Difference]: Finished difference Result 15305 states and 18461 transitions. [2024-10-12 16:30:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:30:59,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2024-10-12 16:30:59,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:30:59,019 INFO L225 Difference]: With dead ends: 15305 [2024-10-12 16:30:59,020 INFO L226 Difference]: Without dead ends: 9163 [2024-10-12 16:30:59,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:30:59,028 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 501 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 1722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:30:59,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 452 Invalid, 1722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 16:30:59,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9163 states. [2024-10-12 16:30:59,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9163 to 8290. [2024-10-12 16:30:59,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8290 states, 8289 states have (on average 1.216069489685125) internal successors, (10080), 8289 states have internal predecessors, (10080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8290 states to 8290 states and 10080 transitions. [2024-10-12 16:30:59,162 INFO L78 Accepts]: Start accepts. Automaton has 8290 states and 10080 transitions. Word has length 168 [2024-10-12 16:30:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:30:59,162 INFO L471 AbstractCegarLoop]: Abstraction has 8290 states and 10080 transitions. [2024-10-12 16:30:59,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:30:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand 8290 states and 10080 transitions. [2024-10-12 16:30:59,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-12 16:30:59,164 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:30:59,164 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:30:59,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 16:30:59,164 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:30:59,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:30:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash -492920889, now seen corresponding path program 1 times [2024-10-12 16:30:59,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:30:59,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629762021] [2024-10-12 16:30:59,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:30:59,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:30:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:30:59,288 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 16:30:59,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:30:59,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629762021] [2024-10-12 16:30:59,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629762021] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:30:59,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:30:59,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:30:59,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036586889] [2024-10-12 16:30:59,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:30:59,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:30:59,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:30:59,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:30:59,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:30:59,290 INFO L87 Difference]: Start difference. First operand 8290 states and 10080 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:00,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:31:00,568 INFO L93 Difference]: Finished difference Result 21258 states and 26394 transitions. [2024-10-12 16:31:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:31:00,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2024-10-12 16:31:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:31:00,594 INFO L225 Difference]: With dead ends: 21258 [2024-10-12 16:31:00,594 INFO L226 Difference]: Without dead ends: 12969 [2024-10-12 16:31:00,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:31:00,605 INFO L432 NwaCegarLoop]: 739 mSDtfsCounter, 490 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:31:00,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 796 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 16:31:00,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12969 states. [2024-10-12 16:31:00,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12969 to 12969. [2024-10-12 16:31:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12969 states, 12968 states have (on average 1.198180135718692) internal successors, (15538), 12968 states have internal predecessors, (15538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:00,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12969 states to 12969 states and 15538 transitions. [2024-10-12 16:31:00,762 INFO L78 Accepts]: Start accepts. Automaton has 12969 states and 15538 transitions. Word has length 171 [2024-10-12 16:31:00,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:31:00,763 INFO L471 AbstractCegarLoop]: Abstraction has 12969 states and 15538 transitions. [2024-10-12 16:31:00,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:00,764 INFO L276 IsEmpty]: Start isEmpty. Operand 12969 states and 15538 transitions. [2024-10-12 16:31:00,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-10-12 16:31:00,766 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:31:00,766 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:31:00,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 16:31:00,766 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:31:00,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:31:00,767 INFO L85 PathProgramCache]: Analyzing trace with hash 595655518, now seen corresponding path program 1 times [2024-10-12 16:31:00,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:31:00,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356029849] [2024-10-12 16:31:00,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:31:00,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:31:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:31:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 164 proven. 70 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 16:31:01,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:31:01,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356029849] [2024-10-12 16:31:01,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356029849] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:31:01,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828632744] [2024-10-12 16:31:01,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:31:01,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:31:01,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:31:01,004 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) [2024-10-12 16:31:01,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 16:31:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:31:01,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 16:31:01,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:31:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 164 proven. 70 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 16:31:01,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 16:31:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 16:31:01,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828632744] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 16:31:01,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 16:31:01,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-12 16:31:01,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365351794] [2024-10-12 16:31:01,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:31:01,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:31:01,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:31:01,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:31:01,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:31:01,551 INFO L87 Difference]: Start difference. First operand 12969 states and 15538 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:03,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:31:03,861 INFO L93 Difference]: Finished difference Result 37035 states and 44926 transitions. [2024-10-12 16:31:03,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:31:03,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2024-10-12 16:31:03,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:31:03,896 INFO L225 Difference]: With dead ends: 37035 [2024-10-12 16:31:03,897 INFO L226 Difference]: Without dead ends: 22758 [2024-10-12 16:31:03,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:31:03,912 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 886 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 3051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:31:03,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 160 Invalid, 3051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-12 16:31:03,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22758 states. [2024-10-12 16:31:04,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22758 to 22752. [2024-10-12 16:31:04,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22752 states, 22751 states have (on average 1.1602566920135378) internal successors, (26397), 22751 states have internal predecessors, (26397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22752 states to 22752 states and 26397 transitions. [2024-10-12 16:31:04,214 INFO L78 Accepts]: Start accepts. Automaton has 22752 states and 26397 transitions. Word has length 238 [2024-10-12 16:31:04,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:31:04,214 INFO L471 AbstractCegarLoop]: Abstraction has 22752 states and 26397 transitions. [2024-10-12 16:31:04,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:04,214 INFO L276 IsEmpty]: Start isEmpty. Operand 22752 states and 26397 transitions. [2024-10-12 16:31:04,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-10-12 16:31:04,218 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:31:04,219 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:31:04,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 16:31:04,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:31:04,420 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:31:04,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:31:04,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1902092960, now seen corresponding path program 1 times [2024-10-12 16:31:04,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:31:04,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135932731] [2024-10-12 16:31:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:31:04,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:31:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:31:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:31:04,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:31:04,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135932731] [2024-10-12 16:31:04,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135932731] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:31:04,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:31:04,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:31:04,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915856407] [2024-10-12 16:31:04,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:31:04,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:31:04,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:31:04,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:31:04,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:31:04,658 INFO L87 Difference]: Start difference. First operand 22752 states and 26397 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:05,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:31:05,926 INFO L93 Difference]: Finished difference Result 51931 states and 60509 transitions. [2024-10-12 16:31:05,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:31:05,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 271 [2024-10-12 16:31:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:31:06,057 INFO L225 Difference]: With dead ends: 51931 [2024-10-12 16:31:06,058 INFO L226 Difference]: Without dead ends: 28328 [2024-10-12 16:31:06,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:31:06,075 INFO L432 NwaCegarLoop]: 708 mSDtfsCounter, 301 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:31:06,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 775 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 16:31:06,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28328 states. [2024-10-12 16:31:06,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28328 to 27894. [2024-10-12 16:31:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27894 states, 27893 states have (on average 1.1442655863478293) internal successors, (31917), 27893 states have internal predecessors, (31917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:06,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27894 states to 27894 states and 31917 transitions. [2024-10-12 16:31:06,297 INFO L78 Accepts]: Start accepts. Automaton has 27894 states and 31917 transitions. Word has length 271 [2024-10-12 16:31:06,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:31:06,297 INFO L471 AbstractCegarLoop]: Abstraction has 27894 states and 31917 transitions. [2024-10-12 16:31:06,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:06,298 INFO L276 IsEmpty]: Start isEmpty. Operand 27894 states and 31917 transitions. [2024-10-12 16:31:06,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-10-12 16:31:06,305 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:31:06,306 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:31:06,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 16:31:06,306 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:31:06,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:31:06,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1907875544, now seen corresponding path program 1 times [2024-10-12 16:31:06,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:31:06,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416262258] [2024-10-12 16:31:06,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:31:06,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:31:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:31:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-10-12 16:31:06,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:31:06,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416262258] [2024-10-12 16:31:06,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416262258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:31:06,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:31:06,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:31:06,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340374807] [2024-10-12 16:31:06,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:31:06,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:31:06,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:31:06,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:31:06,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:31:06,452 INFO L87 Difference]: Start difference. First operand 27894 states and 31917 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:07,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:31:07,860 INFO L93 Difference]: Finished difference Result 66016 states and 75500 transitions. [2024-10-12 16:31:07,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:31:07,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2024-10-12 16:31:07,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:31:07,902 INFO L225 Difference]: With dead ends: 66016 [2024-10-12 16:31:07,902 INFO L226 Difference]: Without dead ends: 37698 [2024-10-12 16:31:07,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:31:07,937 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 483 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:31:07,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 273 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 16:31:07,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37698 states. [2024-10-12 16:31:08,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37698 to 36821. [2024-10-12 16:31:08,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36821 states, 36820 states have (on average 1.1376969038565996) internal successors, (41890), 36820 states have internal predecessors, (41890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36821 states to 36821 states and 41890 transitions. [2024-10-12 16:31:08,373 INFO L78 Accepts]: Start accepts. Automaton has 36821 states and 41890 transitions. Word has length 332 [2024-10-12 16:31:08,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:31:08,374 INFO L471 AbstractCegarLoop]: Abstraction has 36821 states and 41890 transitions. [2024-10-12 16:31:08,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:08,374 INFO L276 IsEmpty]: Start isEmpty. Operand 36821 states and 41890 transitions. [2024-10-12 16:31:08,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-10-12 16:31:08,381 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:31:08,382 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:31:08,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 16:31:08,383 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:31:08,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:31:08,383 INFO L85 PathProgramCache]: Analyzing trace with hash -984297768, now seen corresponding path program 1 times [2024-10-12 16:31:08,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:31:08,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841153781] [2024-10-12 16:31:08,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:31:08,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:31:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:31:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-12 16:31:08,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:31:08,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841153781] [2024-10-12 16:31:08,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841153781] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:31:08,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:31:08,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:31:08,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170149891] [2024-10-12 16:31:08,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:31:08,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:31:08,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:31:08,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:31:08,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:31:08,616 INFO L87 Difference]: Start difference. First operand 36821 states and 41890 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:09,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:31:09,897 INFO L93 Difference]: Finished difference Result 82136 states and 93799 transitions. [2024-10-12 16:31:09,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:31:09,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 353 [2024-10-12 16:31:09,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:31:09,939 INFO L225 Difference]: With dead ends: 82136 [2024-10-12 16:31:09,939 INFO L226 Difference]: Without dead ends: 45316 [2024-10-12 16:31:09,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:31:09,953 INFO L432 NwaCegarLoop]: 725 mSDtfsCounter, 272 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:31:09,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 786 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:31:09,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45316 states. [2024-10-12 16:31:10,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45316 to 45316. [2024-10-12 16:31:10,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45316 states, 45315 states have (on average 1.1218360366324616) internal successors, (50836), 45315 states have internal predecessors, (50836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45316 states to 45316 states and 50836 transitions. [2024-10-12 16:31:10,369 INFO L78 Accepts]: Start accepts. Automaton has 45316 states and 50836 transitions. Word has length 353 [2024-10-12 16:31:10,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:31:10,370 INFO L471 AbstractCegarLoop]: Abstraction has 45316 states and 50836 transitions. [2024-10-12 16:31:10,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:10,370 INFO L276 IsEmpty]: Start isEmpty. Operand 45316 states and 50836 transitions. [2024-10-12 16:31:10,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-10-12 16:31:10,376 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:31:10,376 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-10-12 16:31:10,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 16:31:10,376 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:31:10,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:31:10,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1940168131, now seen corresponding path program 1 times [2024-10-12 16:31:10,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:31:10,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083659915] [2024-10-12 16:31:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:31:10,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:31:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:31:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-12 16:31:10,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:31:10,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083659915] [2024-10-12 16:31:10,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083659915] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:31:10,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:31:10,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:31:10,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298608916] [2024-10-12 16:31:10,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:31:10,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:31:10,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:31:10,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:31:10,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:31:10,693 INFO L87 Difference]: Start difference. First operand 45316 states and 50836 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:12,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:31:12,126 INFO L93 Difference]: Finished difference Result 104722 states and 117660 transitions. [2024-10-12 16:31:12,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:31:12,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 376 [2024-10-12 16:31:12,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:31:12,187 INFO L225 Difference]: With dead ends: 104722 [2024-10-12 16:31:12,187 INFO L226 Difference]: Without dead ends: 59407 [2024-10-12 16:31:12,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:31:12,219 INFO L432 NwaCegarLoop]: 607 mSDtfsCounter, 335 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:31:12,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 650 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 16:31:12,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59407 states. [2024-10-12 16:31:13,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59407 to 56824. [2024-10-12 16:31:13,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56824 states, 56823 states have (on average 1.1257941326575507) internal successors, (63971), 56823 states have internal predecessors, (63971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:13,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56824 states to 56824 states and 63971 transitions. [2024-10-12 16:31:13,101 INFO L78 Accepts]: Start accepts. Automaton has 56824 states and 63971 transitions. Word has length 376 [2024-10-12 16:31:13,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:31:13,101 INFO L471 AbstractCegarLoop]: Abstraction has 56824 states and 63971 transitions. [2024-10-12 16:31:13,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:13,102 INFO L276 IsEmpty]: Start isEmpty. Operand 56824 states and 63971 transitions. [2024-10-12 16:31:13,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-10-12 16:31:13,111 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:31:13,111 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:31:13,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 16:31:13,112 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:31:13,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:31:13,112 INFO L85 PathProgramCache]: Analyzing trace with hash 295076039, now seen corresponding path program 1 times [2024-10-12 16:31:13,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:31:13,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946679478] [2024-10-12 16:31:13,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:31:13,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:31:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:31:13,617 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-12 16:31:13,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:31:13,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946679478] [2024-10-12 16:31:13,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946679478] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:31:13,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:31:13,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:31:13,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373477126] [2024-10-12 16:31:13,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:31:13,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:31:13,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:31:13,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:31:13,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:31:13,620 INFO L87 Difference]: Start difference. First operand 56824 states and 63971 transitions. Second operand has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:15,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:31:15,857 INFO L93 Difference]: Finished difference Result 142213 states and 159745 transitions. [2024-10-12 16:31:15,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:31:15,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 419 [2024-10-12 16:31:15,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:31:15,938 INFO L225 Difference]: With dead ends: 142213 [2024-10-12 16:31:15,938 INFO L226 Difference]: Without dead ends: 84965 [2024-10-12 16:31:15,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:31:15,977 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 812 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 2544 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 3021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 2544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:31:15,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 162 Invalid, 3021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 2544 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-12 16:31:16,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84965 states. [2024-10-12 16:31:16,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84965 to 76386. [2024-10-12 16:31:16,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76386 states, 76385 states have (on average 1.1186227662499182) internal successors, (85446), 76385 states have internal predecessors, (85446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:16,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76386 states to 76386 states and 85446 transitions. [2024-10-12 16:31:16,937 INFO L78 Accepts]: Start accepts. Automaton has 76386 states and 85446 transitions. Word has length 419 [2024-10-12 16:31:16,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:31:16,937 INFO L471 AbstractCegarLoop]: Abstraction has 76386 states and 85446 transitions. [2024-10-12 16:31:16,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:16,937 INFO L276 IsEmpty]: Start isEmpty. Operand 76386 states and 85446 transitions. [2024-10-12 16:31:16,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2024-10-12 16:31:16,946 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:31:16,946 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:31:16,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 16:31:16,947 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:31:16,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:31:16,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1281706817, now seen corresponding path program 1 times [2024-10-12 16:31:16,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:31:16,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148577844] [2024-10-12 16:31:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:31:16,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:31:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:31:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:31:17,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:31:17,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148577844] [2024-10-12 16:31:17,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148577844] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:31:17,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:31:17,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 16:31:17,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96524183] [2024-10-12 16:31:17,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:31:17,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 16:31:17,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:31:17,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 16:31:17,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:31:17,849 INFO L87 Difference]: Start difference. First operand 76386 states and 85446 transitions. Second operand has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:20,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:31:20,472 INFO L93 Difference]: Finished difference Result 177077 states and 198313 transitions. [2024-10-12 16:31:20,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 16:31:20,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 426 [2024-10-12 16:31:20,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:31:20,599 INFO L225 Difference]: With dead ends: 177077 [2024-10-12 16:31:20,599 INFO L226 Difference]: Without dead ends: 100692 [2024-10-12 16:31:20,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:31:20,648 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 1113 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 3262 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 3722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 3262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:31:20,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 184 Invalid, 3722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 3262 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-12 16:31:20,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100692 states. [2024-10-12 16:31:21,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100692 to 91742. [2024-10-12 16:31:21,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91742 states, 91741 states have (on average 1.1246552795369573) internal successors, (103177), 91741 states have internal predecessors, (103177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:21,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91742 states to 91742 states and 103177 transitions. [2024-10-12 16:31:21,844 INFO L78 Accepts]: Start accepts. Automaton has 91742 states and 103177 transitions. Word has length 426 [2024-10-12 16:31:21,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:31:21,844 INFO L471 AbstractCegarLoop]: Abstraction has 91742 states and 103177 transitions. [2024-10-12 16:31:21,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:21,845 INFO L276 IsEmpty]: Start isEmpty. Operand 91742 states and 103177 transitions. [2024-10-12 16:31:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2024-10-12 16:31:21,861 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:31:21,861 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2024-10-12 16:31:21,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 16:31:21,861 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:31:21,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:31:21,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1296480900, now seen corresponding path program 1 times [2024-10-12 16:31:21,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:31:21,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802573267] [2024-10-12 16:31:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:31:21,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:31:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:31:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 459 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-10-12 16:31:22,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:31:22,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802573267] [2024-10-12 16:31:22,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802573267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:31:22,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:31:22,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:31:22,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192825359] [2024-10-12 16:31:22,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:31:22,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:31:22,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:31:22,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:31:22,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:31:22,042 INFO L87 Difference]: Start difference. First operand 91742 states and 103177 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:22,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:31:22,992 INFO L93 Difference]: Finished difference Result 180063 states and 202009 transitions. [2024-10-12 16:31:22,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:31:22,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 440 [2024-10-12 16:31:22,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:31:23,278 INFO L225 Difference]: With dead ends: 180063 [2024-10-12 16:31:23,278 INFO L226 Difference]: Without dead ends: 88322 [2024-10-12 16:31:23,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:31:23,327 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 632 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:31:23,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 106 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:31:23,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88322 states. [2024-10-12 16:31:24,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88322 to 86188. [2024-10-12 16:31:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86188 states, 86187 states have (on average 1.1202965644470744) internal successors, (96555), 86187 states have internal predecessors, (96555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:24,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86188 states to 86188 states and 96555 transitions. [2024-10-12 16:31:24,306 INFO L78 Accepts]: Start accepts. Automaton has 86188 states and 96555 transitions. Word has length 440 [2024-10-12 16:31:24,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:31:24,307 INFO L471 AbstractCegarLoop]: Abstraction has 86188 states and 96555 transitions. [2024-10-12 16:31:24,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:24,307 INFO L276 IsEmpty]: Start isEmpty. Operand 86188 states and 96555 transitions. [2024-10-12 16:31:24,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2024-10-12 16:31:24,314 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:31:24,314 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-10-12 16:31:24,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 16:31:24,315 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:31:24,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:31:24,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2095815095, now seen corresponding path program 1 times [2024-10-12 16:31:24,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:31:24,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383115358] [2024-10-12 16:31:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:31:24,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:31:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:31:24,890 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-12 16:31:24,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:31:24,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383115358] [2024-10-12 16:31:24,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383115358] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:31:24,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:31:24,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:31:24,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227021759] [2024-10-12 16:31:24,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:31:24,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:31:24,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:31:24,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:31:24,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:31:24,893 INFO L87 Difference]: Start difference. First operand 86188 states and 96555 transitions. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:27,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:31:27,328 INFO L93 Difference]: Finished difference Result 201377 states and 224871 transitions. [2024-10-12 16:31:27,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:31:27,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 458 [2024-10-12 16:31:27,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:31:27,459 INFO L225 Difference]: With dead ends: 201377 [2024-10-12 16:31:27,459 INFO L226 Difference]: Without dead ends: 111782 [2024-10-12 16:31:27,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:31:27,497 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 773 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2601 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:31:27,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 246 Invalid, 2976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2601 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-12 16:31:27,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111782 states. [2024-10-12 16:31:28,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111782 to 107890. [2024-10-12 16:31:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107890 states, 107889 states have (on average 1.11316260230422) internal successors, (120098), 107889 states have internal predecessors, (120098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107890 states to 107890 states and 120098 transitions. [2024-10-12 16:31:29,051 INFO L78 Accepts]: Start accepts. Automaton has 107890 states and 120098 transitions. Word has length 458 [2024-10-12 16:31:29,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:31:29,051 INFO L471 AbstractCegarLoop]: Abstraction has 107890 states and 120098 transitions. [2024-10-12 16:31:29,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:29,052 INFO L276 IsEmpty]: Start isEmpty. Operand 107890 states and 120098 transitions. [2024-10-12 16:31:29,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-10-12 16:31:29,071 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:31:29,071 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:31:29,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 16:31:29,071 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:31:29,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:31:29,072 INFO L85 PathProgramCache]: Analyzing trace with hash 593163083, now seen corresponding path program 1 times [2024-10-12 16:31:29,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:31:29,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362827482] [2024-10-12 16:31:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:31:29,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:31:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:31:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 255 proven. 82 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 16:31:29,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:31:29,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362827482] [2024-10-12 16:31:29,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362827482] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:31:29,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572918208] [2024-10-12 16:31:29,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:31:29,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:31:29,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:31:29,725 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) [2024-10-12 16:31:29,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 16:31:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:31:29,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:31:29,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:31:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-12 16:31:31,552 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:31:31,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572918208] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:31:31,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:31:31,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 16:31:31,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472122187] [2024-10-12 16:31:31,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:31:31,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:31:31,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:31:31,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:31:31,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:31:31,554 INFO L87 Difference]: Start difference. First operand 107890 states and 120098 transitions. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:36,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 16:31:37,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:31:37,378 INFO L93 Difference]: Finished difference Result 226886 states and 252353 transitions. [2024-10-12 16:31:37,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:31:37,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 469 [2024-10-12 16:31:37,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:31:37,510 INFO L225 Difference]: With dead ends: 226886 [2024-10-12 16:31:37,510 INFO L226 Difference]: Without dead ends: 118997 [2024-10-12 16:31:37,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:31:37,554 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 232 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 105 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:31:37,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 365 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1263 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2024-10-12 16:31:37,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118997 states. [2024-10-12 16:31:38,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118997 to 115569. [2024-10-12 16:31:38,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115569 states, 115568 states have (on average 1.1057559185933823) internal successors, (127790), 115568 states have internal predecessors, (127790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:38,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115569 states to 115569 states and 127790 transitions. [2024-10-12 16:31:39,000 INFO L78 Accepts]: Start accepts. Automaton has 115569 states and 127790 transitions. Word has length 469 [2024-10-12 16:31:39,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:31:39,004 INFO L471 AbstractCegarLoop]: Abstraction has 115569 states and 127790 transitions. [2024-10-12 16:31:39,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:39,004 INFO L276 IsEmpty]: Start isEmpty. Operand 115569 states and 127790 transitions. [2024-10-12 16:31:39,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2024-10-12 16:31:39,021 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:31:39,021 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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] [2024-10-12 16:31:39,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 16:31:39,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 16:31:39,222 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:31:39,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:31:39,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1054115083, now seen corresponding path program 1 times [2024-10-12 16:31:39,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:31:39,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046661184] [2024-10-12 16:31:39,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:31:39,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:31:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:31:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 542 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2024-10-12 16:31:39,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:31:39,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046661184] [2024-10-12 16:31:39,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046661184] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:31:39,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:31:39,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:31:39,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967128168] [2024-10-12 16:31:39,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:31:39,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:31:39,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:31:39,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:31:39,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:31:39,474 INFO L87 Difference]: Start difference. First operand 115569 states and 127790 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:41,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:31:41,170 INFO L93 Difference]: Finished difference Result 243464 states and 268930 transitions. [2024-10-12 16:31:41,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:31:41,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 506 [2024-10-12 16:31:41,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:31:41,306 INFO L225 Difference]: With dead ends: 243464 [2024-10-12 16:31:41,306 INFO L226 Difference]: Without dead ends: 127896 [2024-10-12 16:31:41,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:31:41,369 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 401 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:31:41,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 330 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 16:31:41,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127896 states. [2024-10-12 16:31:42,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127896 to 123210. [2024-10-12 16:31:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123210 states, 123209 states have (on average 1.0997492066326324) internal successors, (135499), 123209 states have internal predecessors, (135499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123210 states to 123210 states and 135499 transitions. [2024-10-12 16:31:42,936 INFO L78 Accepts]: Start accepts. Automaton has 123210 states and 135499 transitions. Word has length 506 [2024-10-12 16:31:42,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:31:42,936 INFO L471 AbstractCegarLoop]: Abstraction has 123210 states and 135499 transitions. [2024-10-12 16:31:42,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:42,937 INFO L276 IsEmpty]: Start isEmpty. Operand 123210 states and 135499 transitions. [2024-10-12 16:31:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-10-12 16:31:42,953 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:31:42,954 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:31:42,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 16:31:42,954 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:31:42,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:31:42,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1839109339, now seen corresponding path program 1 times [2024-10-12 16:31:42,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:31:42,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259549030] [2024-10-12 16:31:42,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:31:42,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:31:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:31:43,823 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-10-12 16:31:43,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:31:43,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259549030] [2024-10-12 16:31:43,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259549030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:31:43,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:31:43,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:31:43,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691123944] [2024-10-12 16:31:43,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:31:43,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:31:43,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:31:43,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:31:43,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:31:43,825 INFO L87 Difference]: Start difference. First operand 123210 states and 135499 transitions. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:31:46,305 INFO L93 Difference]: Finished difference Result 274973 states and 302065 transitions. [2024-10-12 16:31:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:31:46,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 538 [2024-10-12 16:31:46,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:31:46,452 INFO L225 Difference]: With dead ends: 274973 [2024-10-12 16:31:46,452 INFO L226 Difference]: Without dead ends: 149211 [2024-10-12 16:31:46,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:31:46,521 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 785 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:31:46,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 170 Invalid, 2911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-12 16:31:46,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149211 states. [2024-10-12 16:31:48,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149211 to 147449. [2024-10-12 16:31:48,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147449 states, 147448 states have (on average 1.0971054202159405) internal successors, (161766), 147448 states have internal predecessors, (161766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:48,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147449 states to 147449 states and 161766 transitions. [2024-10-12 16:31:48,424 INFO L78 Accepts]: Start accepts. Automaton has 147449 states and 161766 transitions. Word has length 538 [2024-10-12 16:31:48,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:31:48,424 INFO L471 AbstractCegarLoop]: Abstraction has 147449 states and 161766 transitions. [2024-10-12 16:31:48,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:31:48,424 INFO L276 IsEmpty]: Start isEmpty. Operand 147449 states and 161766 transitions. [2024-10-12 16:31:48,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2024-10-12 16:31:48,440 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:31:48,441 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2024-10-12 16:31:48,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 16:31:48,441 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:31:48,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:31:48,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1889091213, now seen corresponding path program 1 times [2024-10-12 16:31:48,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:31:48,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962465831] [2024-10-12 16:31:48,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:31:48,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:31:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:31:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 386 proven. 13 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-10-12 16:31:49,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:31:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962465831] [2024-10-12 16:31:49,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962465831] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:31:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551062680] [2024-10-12 16:31:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:31:49,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:31:49,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:31:49,628 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) [2024-10-12 16:31:49,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 16:31:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:31:49,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 16:31:49,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:31:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-10-12 16:31:54,293 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:31:54,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551062680] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:31:54,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:31:54,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-10-12 16:31:54,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793739186] [2024-10-12 16:31:54,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:31:54,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 16:31:54,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:31:54,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 16:31:54,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:31:54,295 INFO L87 Difference]: Start difference. First operand 147449 states and 161766 transitions. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:00,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:32:00,643 INFO L93 Difference]: Finished difference Result 341672 states and 374251 transitions. [2024-10-12 16:32:00,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:32:00,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 546 [2024-10-12 16:32:00,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:32:00,855 INFO L225 Difference]: With dead ends: 341672 [2024-10-12 16:32:00,855 INFO L226 Difference]: Without dead ends: 193797 [2024-10-12 16:32:00,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:32:00,927 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 747 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 4112 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 4495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 4112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:32:00,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 453 Invalid, 4495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 4112 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-10-12 16:32:01,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193797 states. [2024-10-12 16:32:02,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193797 to 180180. [2024-10-12 16:32:03,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180180 states, 180179 states have (on average 1.0788327163542921) internal successors, (194383), 180179 states have internal predecessors, (194383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:03,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180180 states to 180180 states and 194383 transitions. [2024-10-12 16:32:03,579 INFO L78 Accepts]: Start accepts. Automaton has 180180 states and 194383 transitions. Word has length 546 [2024-10-12 16:32:03,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:32:03,579 INFO L471 AbstractCegarLoop]: Abstraction has 180180 states and 194383 transitions. [2024-10-12 16:32:03,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:03,579 INFO L276 IsEmpty]: Start isEmpty. Operand 180180 states and 194383 transitions. [2024-10-12 16:32:03,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2024-10-12 16:32:03,593 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:32:03,593 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:32:03,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 16:32:03,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:32:03,794 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:32:03,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:32:03,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1126568112, now seen corresponding path program 1 times [2024-10-12 16:32:03,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:32:03,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908288605] [2024-10-12 16:32:03,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:03,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:32:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:04,136 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 366 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-10-12 16:32:04,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:32:04,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908288605] [2024-10-12 16:32:04,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908288605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:32:04,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:32:04,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:32:04,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476125864] [2024-10-12 16:32:04,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:32:04,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:32:04,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:32:04,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:32:04,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:32:04,140 INFO L87 Difference]: Start difference. First operand 180180 states and 194383 transitions. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:06,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:32:06,051 INFO L93 Difference]: Finished difference Result 354817 states and 382338 transitions. [2024-10-12 16:32:06,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:32:06,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 556 [2024-10-12 16:32:06,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:32:06,227 INFO L225 Difference]: With dead ends: 354817 [2024-10-12 16:32:06,227 INFO L226 Difference]: Without dead ends: 174638 [2024-10-12 16:32:06,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:32:06,695 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 228 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:32:06,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 269 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 16:32:06,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174638 states.