./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p19.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p19.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 46c8c70b94fb416b397f60e2acbf82f6629dd4cb8ce2ac8f593f21f2a4fca4f4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 18:15:14,612 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 18:15:14,690 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-18 18:15:14,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 18:15:14,694 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 18:15:14,719 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 18:15:14,719 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 18:15:14,720 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 18:15:14,720 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 18:15:14,721 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 18:15:14,721 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 18:15:14,722 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 18:15:14,722 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 18:15:14,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 18:15:14,725 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 18:15:14,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 18:15:14,725 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 18:15:14,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 18:15:14,726 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 18:15:14,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 18:15:14,728 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 18:15:14,729 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 18:15:14,729 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 18:15:14,729 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 18:15:14,729 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 18:15:14,730 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 18:15:14,730 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 18:15:14,730 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 18:15:14,730 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 18:15:14,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 18:15:14,731 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 18:15:14,731 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 18:15:14,731 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 18:15:14,732 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 18:15:14,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 18:15:14,732 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 18:15:14,733 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 18:15:14,733 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 18:15:14,733 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 18:15:14,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46c8c70b94fb416b397f60e2acbf82f6629dd4cb8ce2ac8f593f21f2a4fca4f4 [2024-11-18 18:15:15,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 18:15:15,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 18:15:15,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 18:15:15,052 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 18:15:15,053 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 18:15:15,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p19.c [2024-11-18 18:15:16,510 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 18:15:16,742 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 18:15:16,743 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p19.c [2024-11-18 18:15:16,753 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5759ce40/41750e2070714f66874ade23afc5ce08/FLAG2ddbaf4ae [2024-11-18 18:15:16,766 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5759ce40/41750e2070714f66874ade23afc5ce08 [2024-11-18 18:15:16,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 18:15:16,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 18:15:16,773 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 18:15:16,773 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 18:15:16,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 18:15:16,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:15:16" (1/1) ... [2024-11-18 18:15:16,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4089846b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:16, skipping insertion in model container [2024-11-18 18:15:16,781 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:15:16" (1/1) ... [2024-11-18 18:15:16,826 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 18:15:17,029 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p19.c[1266,1279] [2024-11-18 18:15:17,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 18:15:17,165 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 18:15:17,175 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p19.c[1266,1279] [2024-11-18 18:15:17,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 18:15:17,281 INFO L204 MainTranslator]: Completed translation [2024-11-18 18:15:17,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17 WrapperNode [2024-11-18 18:15:17,281 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 18:15:17,282 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 18:15:17,282 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 18:15:17,283 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 18:15:17,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,315 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,453 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 720 [2024-11-18 18:15:17,454 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 18:15:17,455 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 18:15:17,455 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 18:15:17,455 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 18:15:17,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,490 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,535 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]. [2024-11-18 18:15:17,539 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,539 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,568 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,576 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,624 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 18:15:17,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 18:15:17,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 18:15:17,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 18:15:17,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (1/1) ... [2024-11-18 18:15:17,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 18:15:17,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:17,661 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) [2024-11-18 18:15:17,664 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 [2024-11-18 18:15:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 18:15:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 18:15:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 18:15:17,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 18:15:17,855 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 18:15:17,857 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 18:15:18,745 INFO L? ?]: Removed 373 outVars from TransFormulas that were not future-live. [2024-11-18 18:15:18,745 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 18:15:18,765 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 18:15:18,766 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 18:15:18,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:15:18 BoogieIcfgContainer [2024-11-18 18:15:18,767 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 18:15:18,769 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 18:15:18,769 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 18:15:18,772 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 18:15:18,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:15:16" (1/3) ... [2024-11-18 18:15:18,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64cb7ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:15:18, skipping insertion in model container [2024-11-18 18:15:18,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:15:17" (2/3) ... [2024-11-18 18:15:18,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64cb7ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:15:18, skipping insertion in model container [2024-11-18 18:15:18,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:15:18" (3/3) ... [2024-11-18 18:15:18,775 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p19.c [2024-11-18 18:15:18,788 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 18:15:18,788 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 18:15:18,843 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 18:15:18,850 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;@3eaf3bcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 18:15:18,850 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 18:15:18,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 140 states have (on average 1.4928571428571429) internal successors, (209), 141 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:18,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-18 18:15:18,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:18,861 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:18,862 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:18,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:18,867 INFO L85 PathProgramCache]: Analyzing trace with hash 387884158, now seen corresponding path program 1 times [2024-11-18 18:15:18,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:18,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273755698] [2024-11-18 18:15:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:18,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:19,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:19,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273755698] [2024-11-18 18:15:19,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273755698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:19,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:19,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:15:19,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723105536] [2024-11-18 18:15:19,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:19,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:15:19,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:19,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:15:19,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:15:19,609 INFO L87 Difference]: Start difference. First operand has 142 states, 140 states have (on average 1.4928571428571429) internal successors, (209), 141 states have internal predecessors, (209), 0 states have call successors, (0), 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 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:19,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:19,680 INFO L93 Difference]: Finished difference Result 229 states and 339 transitions. [2024-11-18 18:15:19,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:15:19,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-11-18 18:15:19,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:19,693 INFO L225 Difference]: With dead ends: 229 [2024-11-18 18:15:19,693 INFO L226 Difference]: Without dead ends: 141 [2024-11-18 18:15:19,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:15:19,700 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:19,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 603 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:15:19,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-18 18:15:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-11-18 18:15:19,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4785714285714286) internal successors, (207), 140 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:19,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 207 transitions. [2024-11-18 18:15:19,740 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 207 transitions. Word has length 41 [2024-11-18 18:15:19,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:19,741 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 207 transitions. [2024-11-18 18:15:19,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:19,742 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 207 transitions. [2024-11-18 18:15:19,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 18:15:19,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:19,743 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:19,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 18:15:19,743 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:19,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:19,744 INFO L85 PathProgramCache]: Analyzing trace with hash -858797603, now seen corresponding path program 1 times [2024-11-18 18:15:19,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:19,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854316634] [2024-11-18 18:15:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:19,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:19,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:19,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854316634] [2024-11-18 18:15:19,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854316634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:19,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:19,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:15:19,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721436580] [2024-11-18 18:15:19,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:19,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:15:19,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:19,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:15:19,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:15:19,977 INFO L87 Difference]: Start difference. First operand 141 states and 207 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:20,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:20,015 INFO L93 Difference]: Finished difference Result 230 states and 337 transitions. [2024-11-18 18:15:20,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:15:20,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-11-18 18:15:20,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:20,018 INFO L225 Difference]: With dead ends: 230 [2024-11-18 18:15:20,018 INFO L226 Difference]: Without dead ends: 143 [2024-11-18 18:15:20,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:15:20,020 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:20,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 599 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:15:20,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-18 18:15:20,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-18 18:15:20,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.471830985915493) internal successors, (209), 142 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 209 transitions. [2024-11-18 18:15:20,030 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 209 transitions. Word has length 42 [2024-11-18 18:15:20,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:20,031 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 209 transitions. [2024-11-18 18:15:20,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:20,031 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 209 transitions. [2024-11-18 18:15:20,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-18 18:15:20,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:20,033 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:20,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 18:15:20,033 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:20,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:20,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1950887625, now seen corresponding path program 1 times [2024-11-18 18:15:20,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:20,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694919326] [2024-11-18 18:15:20,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:20,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:20,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:20,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:20,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694919326] [2024-11-18 18:15:20,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694919326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:20,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:20,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 18:15:20,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882149128] [2024-11-18 18:15:20,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:20,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 18:15:20,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:20,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 18:15:20,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:15:20,461 INFO L87 Difference]: Start difference. First operand 143 states and 209 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:20,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:20,497 INFO L93 Difference]: Finished difference Result 232 states and 338 transitions. [2024-11-18 18:15:20,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 18:15:20,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-11-18 18:15:20,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:20,499 INFO L225 Difference]: With dead ends: 232 [2024-11-18 18:15:20,499 INFO L226 Difference]: Without dead ends: 143 [2024-11-18 18:15:20,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 18:15:20,501 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 6 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:20,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 587 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:15:20,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-18 18:15:20,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-18 18:15:20,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.4647887323943662) internal successors, (208), 142 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:20,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 208 transitions. [2024-11-18 18:15:20,510 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 208 transitions. Word has length 43 [2024-11-18 18:15:20,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:20,511 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 208 transitions. [2024-11-18 18:15:20,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:20,511 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 208 transitions. [2024-11-18 18:15:20,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 18:15:20,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:20,514 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:20,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 18:15:20,514 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:20,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:20,515 INFO L85 PathProgramCache]: Analyzing trace with hash 560912804, now seen corresponding path program 1 times [2024-11-18 18:15:20,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:20,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304405918] [2024-11-18 18:15:20,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:20,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:20,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:20,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:20,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304405918] [2024-11-18 18:15:20,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304405918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:20,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:20,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 18:15:20,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595676591] [2024-11-18 18:15:20,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:20,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 18:15:20,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:20,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 18:15:20,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:15:20,997 INFO L87 Difference]: Start difference. First operand 143 states and 208 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:21,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:21,123 INFO L93 Difference]: Finished difference Result 242 states and 350 transitions. [2024-11-18 18:15:21,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 18:15:21,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-11-18 18:15:21,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:21,125 INFO L225 Difference]: With dead ends: 242 [2024-11-18 18:15:21,128 INFO L226 Difference]: Without dead ends: 153 [2024-11-18 18:15:21,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-18 18:15:21,130 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 192 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:21,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1162 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:15:21,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-18 18:15:21,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2024-11-18 18:15:21,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.4569536423841059) internal successors, (220), 151 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:21,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 220 transitions. [2024-11-18 18:15:21,143 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 220 transitions. Word has length 44 [2024-11-18 18:15:21,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:21,144 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 220 transitions. [2024-11-18 18:15:21,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:21,144 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 220 transitions. [2024-11-18 18:15:21,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 18:15:21,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:21,145 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:21,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 18:15:21,146 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:21,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:21,147 INFO L85 PathProgramCache]: Analyzing trace with hash 527774260, now seen corresponding path program 1 times [2024-11-18 18:15:21,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:21,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480771369] [2024-11-18 18:15:21,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:21,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:21,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:21,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480771369] [2024-11-18 18:15:21,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480771369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:21,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:21,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 18:15:21,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463628192] [2024-11-18 18:15:21,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:21,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 18:15:21,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:21,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 18:15:21,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:15:21,756 INFO L87 Difference]: Start difference. First operand 152 states and 220 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:21,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:21,974 INFO L93 Difference]: Finished difference Result 255 states and 367 transitions. [2024-11-18 18:15:21,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 18:15:21,974 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-11-18 18:15:21,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:21,975 INFO L225 Difference]: With dead ends: 255 [2024-11-18 18:15:21,975 INFO L226 Difference]: Without dead ends: 157 [2024-11-18 18:15:21,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-18 18:15:21,977 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 195 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:21,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1260 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 18:15:21,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-18 18:15:21,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2024-11-18 18:15:21,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.4516129032258065) internal successors, (225), 155 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:21,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 225 transitions. [2024-11-18 18:15:21,985 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 225 transitions. Word has length 45 [2024-11-18 18:15:21,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:21,985 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 225 transitions. [2024-11-18 18:15:21,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:21,986 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 225 transitions. [2024-11-18 18:15:21,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 18:15:21,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:21,987 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:21,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 18:15:21,987 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:21,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:21,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1053569225, now seen corresponding path program 1 times [2024-11-18 18:15:21,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:21,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641909011] [2024-11-18 18:15:21,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:21,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:22,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:22,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:22,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641909011] [2024-11-18 18:15:22,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641909011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:22,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:22,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:15:22,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179263006] [2024-11-18 18:15:22,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:22,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:15:22,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:22,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:15:22,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:15:22,153 INFO L87 Difference]: Start difference. First operand 156 states and 225 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:22,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:22,394 INFO L93 Difference]: Finished difference Result 287 states and 406 transitions. [2024-11-18 18:15:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:15:22,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-11-18 18:15:22,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:22,397 INFO L225 Difference]: With dead ends: 287 [2024-11-18 18:15:22,397 INFO L226 Difference]: Without dead ends: 185 [2024-11-18 18:15:22,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:15:22,398 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 234 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:22,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 630 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:15:22,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-18 18:15:22,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 158. [2024-11-18 18:15:22,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.4458598726114649) internal successors, (227), 157 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 227 transitions. [2024-11-18 18:15:22,416 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 227 transitions. Word has length 45 [2024-11-18 18:15:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:22,416 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 227 transitions. [2024-11-18 18:15:22,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:22,417 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 227 transitions. [2024-11-18 18:15:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 18:15:22,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:22,421 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:22,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 18:15:22,421 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:22,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash 745678211, now seen corresponding path program 1 times [2024-11-18 18:15:22,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:22,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527064656] [2024-11-18 18:15:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:22,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:22,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:22,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:22,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527064656] [2024-11-18 18:15:22,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527064656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:22,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:22,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:15:22,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184554586] [2024-11-18 18:15:22,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:22,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:15:22,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:22,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:15:22,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:15:22,717 INFO L87 Difference]: Start difference. First operand 158 states and 227 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:22,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:22,766 INFO L93 Difference]: Finished difference Result 266 states and 380 transitions. [2024-11-18 18:15:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:15:22,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2024-11-18 18:15:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:22,768 INFO L225 Difference]: With dead ends: 266 [2024-11-18 18:15:22,768 INFO L226 Difference]: Without dead ends: 164 [2024-11-18 18:15:22,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:15:22,769 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 175 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:22,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 589 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 18:15:22,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-18 18:15:22,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-18 18:15:22,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.4294478527607362) internal successors, (233), 163 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 233 transitions. [2024-11-18 18:15:22,785 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 233 transitions. Word has length 46 [2024-11-18 18:15:22,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:22,785 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 233 transitions. [2024-11-18 18:15:22,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:22,785 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 233 transitions. [2024-11-18 18:15:22,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 18:15:22,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:22,786 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:22,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 18:15:22,787 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:22,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:22,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1691991601, now seen corresponding path program 1 times [2024-11-18 18:15:22,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:22,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116478172] [2024-11-18 18:15:22,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:22,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:22,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:22,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:22,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116478172] [2024-11-18 18:15:22,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116478172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:22,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:22,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:15:22,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597958051] [2024-11-18 18:15:22,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:22,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:15:22,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:22,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:15:22,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:15:22,994 INFO L87 Difference]: Start difference. First operand 164 states and 233 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:23,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:23,236 INFO L93 Difference]: Finished difference Result 284 states and 397 transitions. [2024-11-18 18:15:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:15:23,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-11-18 18:15:23,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:23,237 INFO L225 Difference]: With dead ends: 284 [2024-11-18 18:15:23,238 INFO L226 Difference]: Without dead ends: 176 [2024-11-18 18:15:23,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 18:15:23,239 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 202 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:23,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 630 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 18:15:23,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-18 18:15:23,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 166. [2024-11-18 18:15:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.4242424242424243) internal successors, (235), 165 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 235 transitions. [2024-11-18 18:15:23,244 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 235 transitions. Word has length 47 [2024-11-18 18:15:23,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:23,245 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 235 transitions. [2024-11-18 18:15:23,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:23,247 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 235 transitions. [2024-11-18 18:15:23,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-18 18:15:23,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:23,248 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 18:15:23,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 18:15:23,250 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:23,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:23,250 INFO L85 PathProgramCache]: Analyzing trace with hash -19459059, now seen corresponding path program 1 times [2024-11-18 18:15:23,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:23,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468829585] [2024-11-18 18:15:23,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:23,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:24,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:24,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468829585] [2024-11-18 18:15:24,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468829585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:24,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000954413] [2024-11-18 18:15:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:24,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:24,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:24,439 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) [2024-11-18 18:15:24,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 18:15:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:24,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 18:15:24,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:15:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 18:15:25,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:15:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 18:15:25,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000954413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:15:25,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:15:25,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 16 [2024-11-18 18:15:25,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353483483] [2024-11-18 18:15:25,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:15:25,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 18:15:25,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:25,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 18:15:25,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-18 18:15:25,993 INFO L87 Difference]: Start difference. First operand 166 states and 235 transitions. Second operand has 16 states, 16 states have (on average 15.0) internal successors, (240), 16 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:26,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:26,980 INFO L93 Difference]: Finished difference Result 271 states and 379 transitions. [2024-11-18 18:15:26,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 18:15:26,980 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.0) internal successors, (240), 16 states have internal predecessors, (240), 0 states have call successors, (0), 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 89 [2024-11-18 18:15:26,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:26,982 INFO L225 Difference]: With dead ends: 271 [2024-11-18 18:15:26,983 INFO L226 Difference]: Without dead ends: 163 [2024-11-18 18:15:26,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2024-11-18 18:15:26,984 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 347 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:26,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 476 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 18:15:26,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-18 18:15:26,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2024-11-18 18:15:26,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.391304347826087) internal successors, (224), 161 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:26,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 224 transitions. [2024-11-18 18:15:26,990 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 224 transitions. Word has length 89 [2024-11-18 18:15:26,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:26,991 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 224 transitions. [2024-11-18 18:15:26,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.0) internal successors, (240), 16 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:26,991 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 224 transitions. [2024-11-18 18:15:26,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 18:15:26,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:26,992 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:27,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 18:15:27,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:27,197 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:27,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:27,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1953906070, now seen corresponding path program 1 times [2024-11-18 18:15:27,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:27,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443514337] [2024-11-18 18:15:27,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:27,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:28,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:28,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443514337] [2024-11-18 18:15:28,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443514337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:28,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:28,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:15:28,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089212833] [2024-11-18 18:15:28,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:28,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:15:28,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:28,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:15:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:15:28,192 INFO L87 Difference]: Start difference. First operand 162 states and 224 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:28,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:28,508 INFO L93 Difference]: Finished difference Result 284 states and 396 transitions. [2024-11-18 18:15:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:15:28,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2024-11-18 18:15:28,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:28,510 INFO L225 Difference]: With dead ends: 284 [2024-11-18 18:15:28,510 INFO L226 Difference]: Without dead ends: 192 [2024-11-18 18:15:28,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:15:28,511 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 316 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:28,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 399 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 18:15:28,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-18 18:15:28,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 165. [2024-11-18 18:15:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.3841463414634145) internal successors, (227), 164 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 227 transitions. [2024-11-18 18:15:28,519 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 227 transitions. Word has length 93 [2024-11-18 18:15:28,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:28,519 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 227 transitions. [2024-11-18 18:15:28,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 227 transitions. [2024-11-18 18:15:28,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-18 18:15:28,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:28,524 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:28,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 18:15:28,524 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:28,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:28,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1343030861, now seen corresponding path program 1 times [2024-11-18 18:15:28,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:28,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308898377] [2024-11-18 18:15:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:28,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:29,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:29,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308898377] [2024-11-18 18:15:29,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308898377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:29,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:29,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 18:15:29,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393602708] [2024-11-18 18:15:29,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:29,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 18:15:29,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:29,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 18:15:29,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:15:29,509 INFO L87 Difference]: Start difference. First operand 165 states and 227 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:29,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:29,935 INFO L93 Difference]: Finished difference Result 308 states and 431 transitions. [2024-11-18 18:15:29,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 18:15:29,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2024-11-18 18:15:29,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:29,937 INFO L225 Difference]: With dead ends: 308 [2024-11-18 18:15:29,937 INFO L226 Difference]: Without dead ends: 216 [2024-11-18 18:15:29,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:15:29,938 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 334 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:29,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 428 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 18:15:29,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-18 18:15:29,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 185. [2024-11-18 18:15:29,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.391304347826087) internal successors, (256), 184 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:29,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 256 transitions. [2024-11-18 18:15:29,944 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 256 transitions. Word has length 94 [2024-11-18 18:15:29,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:29,946 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 256 transitions. [2024-11-18 18:15:29,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:29,946 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 256 transitions. [2024-11-18 18:15:29,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-18 18:15:29,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:29,947 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:29,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 18:15:29,948 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:29,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:29,948 INFO L85 PathProgramCache]: Analyzing trace with hash -325712007, now seen corresponding path program 1 times [2024-11-18 18:15:29,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:29,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064913700] [2024-11-18 18:15:29,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:29,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:31,205 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:31,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:31,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064913700] [2024-11-18 18:15:31,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064913700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:31,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:31,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 18:15:31,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93289508] [2024-11-18 18:15:31,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:31,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 18:15:31,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:31,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 18:15:31,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:15:31,208 INFO L87 Difference]: Start difference. First operand 185 states and 256 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:31,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:31,895 INFO L93 Difference]: Finished difference Result 327 states and 450 transitions. [2024-11-18 18:15:31,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 18:15:31,895 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2024-11-18 18:15:31,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:31,897 INFO L225 Difference]: With dead ends: 327 [2024-11-18 18:15:31,897 INFO L226 Difference]: Without dead ends: 235 [2024-11-18 18:15:31,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-18 18:15:31,898 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 213 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:31,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 494 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 18:15:31,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-18 18:15:31,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 209. [2024-11-18 18:15:31,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.3894230769230769) internal successors, (289), 208 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:31,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 289 transitions. [2024-11-18 18:15:31,904 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 289 transitions. Word has length 95 [2024-11-18 18:15:31,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:31,904 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 289 transitions. [2024-11-18 18:15:31,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:31,905 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 289 transitions. [2024-11-18 18:15:31,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 18:15:31,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:31,906 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:31,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 18:15:31,906 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:31,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:31,907 INFO L85 PathProgramCache]: Analyzing trace with hash 579848335, now seen corresponding path program 1 times [2024-11-18 18:15:31,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:31,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514167004] [2024-11-18 18:15:31,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:31,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:33,265 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:33,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:33,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514167004] [2024-11-18 18:15:33,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514167004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:33,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:33,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 18:15:33,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098294657] [2024-11-18 18:15:33,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:33,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 18:15:33,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:33,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 18:15:33,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:15:33,268 INFO L87 Difference]: Start difference. First operand 209 states and 289 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:34,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:34,091 INFO L93 Difference]: Finished difference Result 373 states and 513 transitions. [2024-11-18 18:15:34,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 18:15:34,092 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2024-11-18 18:15:34,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:34,093 INFO L225 Difference]: With dead ends: 373 [2024-11-18 18:15:34,093 INFO L226 Difference]: Without dead ends: 257 [2024-11-18 18:15:34,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-18 18:15:34,094 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 254 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:34,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 520 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 18:15:34,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-18 18:15:34,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 210. [2024-11-18 18:15:34,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.3923444976076556) internal successors, (291), 209 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 291 transitions. [2024-11-18 18:15:34,100 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 291 transitions. Word has length 96 [2024-11-18 18:15:34,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:34,100 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 291 transitions. [2024-11-18 18:15:34,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:34,100 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 291 transitions. [2024-11-18 18:15:34,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 18:15:34,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:34,101 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:34,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 18:15:34,102 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:34,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:34,102 INFO L85 PathProgramCache]: Analyzing trace with hash -317661860, now seen corresponding path program 1 times [2024-11-18 18:15:34,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:34,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829000998] [2024-11-18 18:15:34,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:34,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:35,907 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:35,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:35,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829000998] [2024-11-18 18:15:35,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829000998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:35,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:35,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 18:15:35,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130728127] [2024-11-18 18:15:35,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:35,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 18:15:35,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:35,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 18:15:35,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 18:15:35,910 INFO L87 Difference]: Start difference. First operand 210 states and 291 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:36,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:36,672 INFO L93 Difference]: Finished difference Result 345 states and 481 transitions. [2024-11-18 18:15:36,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 18:15:36,673 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2024-11-18 18:15:36,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:36,674 INFO L225 Difference]: With dead ends: 345 [2024-11-18 18:15:36,674 INFO L226 Difference]: Without dead ends: 228 [2024-11-18 18:15:36,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-18 18:15:36,675 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 278 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:36,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 682 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 18:15:36,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-18 18:15:36,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2024-11-18 18:15:36,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.3973214285714286) internal successors, (313), 224 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:36,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 313 transitions. [2024-11-18 18:15:36,683 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 313 transitions. Word has length 96 [2024-11-18 18:15:36,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:36,683 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 313 transitions. [2024-11-18 18:15:36,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 313 transitions. [2024-11-18 18:15:36,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 18:15:36,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:36,684 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:36,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 18:15:36,685 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:36,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:36,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1984904966, now seen corresponding path program 1 times [2024-11-18 18:15:36,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:36,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905138467] [2024-11-18 18:15:36,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:36,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:38,394 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:38,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:38,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905138467] [2024-11-18 18:15:38,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905138467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:38,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696200458] [2024-11-18 18:15:38,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:38,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:38,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:38,397 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) [2024-11-18 18:15:38,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 18:15:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:38,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-18 18:15:38,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:15:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:39,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:15:41,517 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:41,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696200458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:15:41,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:15:41,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 13] total 32 [2024-11-18 18:15:41,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323510427] [2024-11-18 18:15:41,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:15:41,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 18:15:41,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:41,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 18:15:41,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2024-11-18 18:15:41,524 INFO L87 Difference]: Start difference. First operand 225 states and 313 transitions. Second operand has 32 states, 32 states have (on average 8.09375) internal successors, (259), 32 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:43,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:43,200 INFO L93 Difference]: Finished difference Result 414 states and 574 transitions. [2024-11-18 18:15:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 18:15:43,201 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.09375) internal successors, (259), 32 states have internal predecessors, (259), 0 states have call successors, (0), 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 97 [2024-11-18 18:15:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:43,202 INFO L225 Difference]: With dead ends: 414 [2024-11-18 18:15:43,202 INFO L226 Difference]: Without dead ends: 262 [2024-11-18 18:15:43,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=267, Invalid=1625, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 18:15:43,204 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 822 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:43,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 712 Invalid, 2093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2090 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 18:15:43,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-18 18:15:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 251. [2024-11-18 18:15:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.392) internal successors, (348), 250 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) [2024-11-18 18:15:43,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 348 transitions. [2024-11-18 18:15:43,210 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 348 transitions. Word has length 97 [2024-11-18 18:15:43,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:43,210 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 348 transitions. [2024-11-18 18:15:43,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.09375) internal successors, (259), 32 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 348 transitions. [2024-11-18 18:15:43,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-18 18:15:43,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:43,212 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:43,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 18:15:43,416 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,SelfDestructingSolverStorable14 [2024-11-18 18:15:43,417 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:43,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:43,418 INFO L85 PathProgramCache]: Analyzing trace with hash 158448437, now seen corresponding path program 1 times [2024-11-18 18:15:43,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:43,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958787582] [2024-11-18 18:15:43,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:43,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:45,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:45,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958787582] [2024-11-18 18:15:45,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958787582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:15:45,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:15:45,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 18:15:45,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363240436] [2024-11-18 18:15:45,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:15:45,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 18:15:45,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:45,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 18:15:45,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-18 18:15:45,637 INFO L87 Difference]: Start difference. First operand 251 states and 348 transitions. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:46,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:46,387 INFO L93 Difference]: Finished difference Result 636 states and 895 transitions. [2024-11-18 18:15:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 18:15:46,388 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2024-11-18 18:15:46,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:46,390 INFO L225 Difference]: With dead ends: 636 [2024-11-18 18:15:46,390 INFO L226 Difference]: Without dead ends: 519 [2024-11-18 18:15:46,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-18 18:15:46,391 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 407 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:46,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 586 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 18:15:46,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-11-18 18:15:46,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 377. [2024-11-18 18:15:46,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.3909574468085106) internal successors, (523), 376 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:46,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 523 transitions. [2024-11-18 18:15:46,400 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 523 transitions. Word has length 142 [2024-11-18 18:15:46,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:46,401 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 523 transitions. [2024-11-18 18:15:46,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:46,401 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 523 transitions. [2024-11-18 18:15:46,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 18:15:46,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:46,403 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:46,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 18:15:46,403 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:46,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:46,403 INFO L85 PathProgramCache]: Analyzing trace with hash -52269335, now seen corresponding path program 1 times [2024-11-18 18:15:46,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:46,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732694221] [2024-11-18 18:15:46,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:46,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 56 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:49,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:15:49,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732694221] [2024-11-18 18:15:49,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732694221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:15:49,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436033206] [2024-11-18 18:15:49,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:49,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:49,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:15:49,683 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) [2024-11-18 18:15:49,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 18:15:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:15:50,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-18 18:15:50,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:15:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 56 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:51,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:15:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 60 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:15:53,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436033206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:15:53,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:15:53,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 19] total 44 [2024-11-18 18:15:53,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52749456] [2024-11-18 18:15:53,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:15:53,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-18 18:15:53,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:15:53,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-18 18:15:53,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1511, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 18:15:53,416 INFO L87 Difference]: Start difference. First operand 377 states and 523 transitions. Second operand has 44 states, 44 states have (on average 8.545454545454545) internal successors, (376), 44 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:57,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:15:57,068 INFO L93 Difference]: Finished difference Result 963 states and 1290 transitions. [2024-11-18 18:15:57,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-18 18:15:57,069 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 8.545454545454545) internal successors, (376), 44 states have internal predecessors, (376), 0 states have call successors, (0), 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 143 [2024-11-18 18:15:57,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:15:57,074 INFO L225 Difference]: With dead ends: 963 [2024-11-18 18:15:57,074 INFO L226 Difference]: Without dead ends: 737 [2024-11-18 18:15:57,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2539 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1720, Invalid=8180, Unknown=0, NotChecked=0, Total=9900 [2024-11-18 18:15:57,080 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 1421 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 5420 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 5440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 5420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-18 18:15:57,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 1666 Invalid, 5440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 5420 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-18 18:15:57,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-11-18 18:15:57,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 533. [2024-11-18 18:15:57,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.3590225563909775) internal successors, (723), 532 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:57,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 723 transitions. [2024-11-18 18:15:57,093 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 723 transitions. Word has length 143 [2024-11-18 18:15:57,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:15:57,094 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 723 transitions. [2024-11-18 18:15:57,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 8.545454545454545) internal successors, (376), 44 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:15:57,094 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 723 transitions. [2024-11-18 18:15:57,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 18:15:57,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:15:57,096 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:15:57,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 18:15:57,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:15:57,297 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:15:57,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:15:57,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1452286868, now seen corresponding path program 1 times [2024-11-18 18:15:57,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:15:57,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791415080] [2024-11-18 18:15:57,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:15:57,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:15:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:16:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 37 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:16:01,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:16:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791415080] [2024-11-18 18:16:01,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791415080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:16:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874713227] [2024-11-18 18:16:01,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:16:01,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:16:01,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:16:01,316 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:16:01,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 18:16:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:16:02,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-18 18:16:02,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:16:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 33 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:16:02,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:16:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 44 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:16:03,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874713227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:16:03,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:16:03,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 14] total 38 [2024-11-18 18:16:03,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295703639] [2024-11-18 18:16:03,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:16:03,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-18 18:16:03,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:16:03,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-18 18:16:03,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1251, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 18:16:03,433 INFO L87 Difference]: Start difference. First operand 533 states and 723 transitions. Second operand has 38 states, 38 states have (on average 7.947368421052632) internal successors, (302), 38 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:16:05,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:16:05,193 INFO L93 Difference]: Finished difference Result 1619 states and 2189 transitions. [2024-11-18 18:16:05,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-18 18:16:05,194 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 7.947368421052632) internal successors, (302), 38 states have internal predecessors, (302), 0 states have call successors, (0), 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 145 [2024-11-18 18:16:05,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:16:05,198 INFO L225 Difference]: With dead ends: 1619 [2024-11-18 18:16:05,198 INFO L226 Difference]: Without dead ends: 1231 [2024-11-18 18:16:05,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=555, Invalid=3735, Unknown=0, NotChecked=0, Total=4290 [2024-11-18 18:16:05,200 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 1309 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 2718 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 18:16:05,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 926 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2718 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 18:16:05,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2024-11-18 18:16:05,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 859. [2024-11-18 18:16:05,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 858 states have (on average 1.3752913752913754) internal successors, (1180), 858 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:16:05,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1180 transitions. [2024-11-18 18:16:05,222 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1180 transitions. Word has length 145 [2024-11-18 18:16:05,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:16:05,222 INFO L471 AbstractCegarLoop]: Abstraction has 859 states and 1180 transitions. [2024-11-18 18:16:05,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 7.947368421052632) internal successors, (302), 38 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:16:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1180 transitions. [2024-11-18 18:16:05,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 18:16:05,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:16:05,225 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:16:05,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 18:16:05,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 18:16:05,426 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:16:05,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:16:05,428 INFO L85 PathProgramCache]: Analyzing trace with hash -830888199, now seen corresponding path program 1 times [2024-11-18 18:16:05,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:16:05,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430220814] [2024-11-18 18:16:05,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:16:05,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:16:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:16:06,893 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 18:16:06,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:16:06,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430220814] [2024-11-18 18:16:06,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430220814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 18:16:06,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 18:16:06,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 18:16:06,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637437684] [2024-11-18 18:16:06,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 18:16:06,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 18:16:06,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:16:06,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 18:16:06,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 18:16:06,898 INFO L87 Difference]: Start difference. First operand 859 states and 1180 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:16:07,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 18:16:07,186 INFO L93 Difference]: Finished difference Result 1543 states and 2122 transitions. [2024-11-18 18:16:07,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 18:16:07,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 146 [2024-11-18 18:16:07,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 18:16:07,190 INFO L225 Difference]: With dead ends: 1543 [2024-11-18 18:16:07,190 INFO L226 Difference]: Without dead ends: 897 [2024-11-18 18:16:07,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 18:16:07,192 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 211 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 18:16:07,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 177 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 18:16:07,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2024-11-18 18:16:07,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 703. [2024-11-18 18:16:07,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 702 states have (on average 1.3561253561253561) internal successors, (952), 702 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:16:07,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 952 transitions. [2024-11-18 18:16:07,206 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 952 transitions. Word has length 146 [2024-11-18 18:16:07,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 18:16:07,207 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 952 transitions. [2024-11-18 18:16:07,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 18:16:07,207 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 952 transitions. [2024-11-18 18:16:07,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 18:16:07,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 18:16:07,209 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 18:16:07,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 18:16:07,210 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 18:16:07,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 18:16:07,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2113237964, now seen corresponding path program 1 times [2024-11-18 18:16:07,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 18:16:07,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929702626] [2024-11-18 18:16:07,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:16:07,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 18:16:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:16:10,721 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:16:10,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 18:16:10,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929702626] [2024-11-18 18:16:10,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929702626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 18:16:10,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660045783] [2024-11-18 18:16:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 18:16:10,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 18:16:10,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 18:16:10,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 18:16:10,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 18:16:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 18:16:11,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 166 conjuncts are in the unsatisfiable core [2024-11-18 18:16:11,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 18:16:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 33 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:16:13,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 18:16:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 18:16:16,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660045783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 18:16:16,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 18:16:16,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 30, 22] total 62 [2024-11-18 18:16:16,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631766219] [2024-11-18 18:16:16,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 18:16:16,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-18 18:16:16,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 18:16:16,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-18 18:16:16,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=3289, Unknown=0, NotChecked=0, Total=3782 [2024-11-18 18:16:16,138 INFO L87 Difference]: Start difference. First operand 703 states and 952 transitions. Second operand has 62 states, 62 states have (on average 6.774193548387097) internal successors, (420), 62 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)