/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-52.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 09:27:54,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 09:27:54,483 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 09:27:54,487 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 09:27:54,487 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 09:27:54,515 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 09:27:54,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 09:27:54,516 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 09:27:54,516 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 09:27:54,516 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 09:27:54,516 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 09:27:54,517 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 09:27:54,517 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 09:27:54,517 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 09:27:54,517 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 09:27:54,518 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 09:27:54,518 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 09:27:54,518 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 09:27:54,518 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 09:27:54,518 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 09:27:54,522 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 09:27:54,522 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 09:27:54,522 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 09:27:54,522 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 09:27:54,523 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 09:27:54,523 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 09:27:54,523 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 09:27:54,523 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 09:27:54,523 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 09:27:54,524 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 09:27:54,524 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 09:27:54,524 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 09:27:54,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 09:27:54,524 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 09:27:54,525 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 09:27:54,525 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 09:27:54,525 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 09:27:54,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 09:27:54,525 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 09:27:54,526 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 09:27:54,526 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 09:27:54,527 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 09:27:54,527 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 09:27:54,527 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 09:27:54,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 09:27:54,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 09:27:54,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 09:27:54,760 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 09:27:54,760 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 09:27:54,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-52.i [2023-12-19 09:27:55,841 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 09:27:56,019 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 09:27:56,019 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-52.i [2023-12-19 09:27:56,029 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1144abe7b/537e57c6571642fc834f940cff970d9c/FLAG6e4233625 [2023-12-19 09:27:56,042 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1144abe7b/537e57c6571642fc834f940cff970d9c [2023-12-19 09:27:56,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 09:27:56,044 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 09:27:56,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 09:27:56,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 09:27:56,056 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 09:27:56,057 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 09:27:56" (1/1) ... [2023-12-19 09:27:56,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@482065b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:27:56, skipping insertion in model container [2023-12-19 09:27:56,058 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 09:27:56" (1/1) ... [2023-12-19 09:27:56,097 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 09:27:56,212 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-52.i[919,932] [2023-12-19 09:27:56,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 09:27:56,293 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 09:27:56,300 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-52.i[919,932] [2023-12-19 09:27:56,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 09:27:56,328 INFO L206 MainTranslator]: Completed translation [2023-12-19 09:27:56,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:27:56 WrapperNode [2023-12-19 09:27:56,329 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 09:27:56,329 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 09:27:56,329 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 09:27:56,329 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 09:27:56,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:27:56" (1/1) ... [2023-12-19 09:27:56,347 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:27:56" (1/1) ... [2023-12-19 09:27:56,373 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 204 [2023-12-19 09:27:56,374 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 09:27:56,374 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 09:27:56,374 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 09:27:56,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 09:27:56,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:27:56" (1/1) ... [2023-12-19 09:27:56,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:27:56" (1/1) ... [2023-12-19 09:27:56,387 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:27:56" (1/1) ... [2023-12-19 09:27:56,405 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]. [2023-12-19 09:27:56,406 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:27:56" (1/1) ... [2023-12-19 09:27:56,406 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:27:56" (1/1) ... [2023-12-19 09:27:56,413 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:27:56" (1/1) ... [2023-12-19 09:27:56,416 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:27:56" (1/1) ... [2023-12-19 09:27:56,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:27:56" (1/1) ... [2023-12-19 09:27:56,419 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:27:56" (1/1) ... [2023-12-19 09:27:56,421 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 09:27:56,422 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 09:27:56,422 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 09:27:56,422 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 09:27:56,423 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:27:56" (1/1) ... [2023-12-19 09:27:56,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 09:27:56,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:27:56,469 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) [2023-12-19 09:27:56,484 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 [2023-12-19 09:27:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 09:27:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 09:27:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 09:27:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 09:27:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 09:27:56,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 09:27:56,569 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 09:27:56,573 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 09:27:56,867 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 09:27:56,909 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 09:27:56,910 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 09:27:56,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 09:27:56 BoogieIcfgContainer [2023-12-19 09:27:56,910 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 09:27:56,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 09:27:56,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 09:27:56,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 09:27:56,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 09:27:56" (1/3) ... [2023-12-19 09:27:56,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32cff182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 09:27:56, skipping insertion in model container [2023-12-19 09:27:56,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:27:56" (2/3) ... [2023-12-19 09:27:56,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32cff182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 09:27:56, skipping insertion in model container [2023-12-19 09:27:56,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 09:27:56" (3/3) ... [2023-12-19 09:27:56,917 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-52.i [2023-12-19 09:27:56,929 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 09:27:56,930 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 09:27:56,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 09:27:56,976 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2d418525, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 09:27:56,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 09:27:56,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 53 states have internal predecessors, (81), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-19 09:27:56,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 09:27:56,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:27:56,995 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:27:56,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:27:56,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:27:56,999 INFO L85 PathProgramCache]: Analyzing trace with hash -278260323, now seen corresponding path program 1 times [2023-12-19 09:27:57,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:27:57,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019688332] [2023-12-19 09:27:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:57,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:27:57,175 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:27:57,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578616948] [2023-12-19 09:27:57,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:57,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:27:57,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:27:57,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:27:57,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 09:27:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:27:57,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 09:27:57,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:27:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 09:27:57,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:27:57,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:27:57,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019688332] [2023-12-19 09:27:57,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:27:57,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578616948] [2023-12-19 09:27:57,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578616948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:27:57,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:27:57,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 09:27:57,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312865143] [2023-12-19 09:27:57,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:27:57,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 09:27:57,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:27:57,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 09:27:57,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 09:27:57,640 INFO L87 Difference]: Start difference. First operand has 77 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 53 states have internal predecessors, (81), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 09:27:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:27:57,717 INFO L93 Difference]: Finished difference Result 221 states and 410 transitions. [2023-12-19 09:27:57,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 09:27:57,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 147 [2023-12-19 09:27:57,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:27:57,726 INFO L225 Difference]: With dead ends: 221 [2023-12-19 09:27:57,726 INFO L226 Difference]: Without dead ends: 145 [2023-12-19 09:27:57,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 09:27:57,731 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 43 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 09:27:57,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 214 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 09:27:57,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-19 09:27:57,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 127. [2023-12-19 09:27:57,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 80 states have (on average 1.425) internal successors, (114), 80 states have internal predecessors, (114), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-19 09:27:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 202 transitions. [2023-12-19 09:27:57,792 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 202 transitions. Word has length 147 [2023-12-19 09:27:57,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:27:57,793 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 202 transitions. [2023-12-19 09:27:57,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 09:27:57,793 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 202 transitions. [2023-12-19 09:27:57,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-19 09:27:57,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:27:57,800 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:27:57,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 09:27:58,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 09:27:58,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:27:58,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:27:58,008 INFO L85 PathProgramCache]: Analyzing trace with hash 741265122, now seen corresponding path program 1 times [2023-12-19 09:27:58,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:27:58,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27518995] [2023-12-19 09:27:58,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:58,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:27:58,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:27:58,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107982706] [2023-12-19 09:27:58,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:58,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:27:58,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:27:58,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:27:58,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 09:27:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:27:58,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 09:27:58,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:27:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 09:27:58,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:27:58,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:27:58,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27518995] [2023-12-19 09:27:58,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:27:58,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107982706] [2023-12-19 09:27:58,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107982706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:27:58,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:27:58,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 09:27:58,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307587668] [2023-12-19 09:27:58,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:27:58,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 09:27:58,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:27:58,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 09:27:58,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 09:27:58,282 INFO L87 Difference]: Start difference. First operand 127 states and 202 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 09:27:58,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:27:58,366 INFO L93 Difference]: Finished difference Result 265 states and 420 transitions. [2023-12-19 09:27:58,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 09:27:58,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 148 [2023-12-19 09:27:58,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:27:58,375 INFO L225 Difference]: With dead ends: 265 [2023-12-19 09:27:58,375 INFO L226 Difference]: Without dead ends: 191 [2023-12-19 09:27:58,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 09:27:58,381 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 92 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 09:27:58,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 304 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 09:27:58,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-12-19 09:27:58,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 136. [2023-12-19 09:27:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 89 states have (on average 1.4157303370786516) internal successors, (126), 89 states have internal predecessors, (126), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-19 09:27:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 214 transitions. [2023-12-19 09:27:58,403 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 214 transitions. Word has length 148 [2023-12-19 09:27:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:27:58,403 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 214 transitions. [2023-12-19 09:27:58,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 09:27:58,404 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 214 transitions. [2023-12-19 09:27:58,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-19 09:27:58,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:27:58,409 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:27:58,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 09:27:58,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 09:27:58,620 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:27:58,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:27:58,621 INFO L85 PathProgramCache]: Analyzing trace with hash -279803232, now seen corresponding path program 1 times [2023-12-19 09:27:58,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:27:58,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042787147] [2023-12-19 09:27:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:58,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:27:58,651 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:27:58,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358423885] [2023-12-19 09:27:58,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:58,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:27:58,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:27:58,656 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:27:58,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 09:27:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:27:58,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 09:27:58,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:27:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 09:27:58,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:27:58,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:27:58,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042787147] [2023-12-19 09:27:58,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:27:58,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358423885] [2023-12-19 09:27:58,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358423885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:27:58,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:27:58,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 09:27:58,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499254156] [2023-12-19 09:27:58,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:27:58,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 09:27:58,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:27:58,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 09:27:58,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 09:27:58,810 INFO L87 Difference]: Start difference. First operand 136 states and 214 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 09:27:58,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:27:58,870 INFO L93 Difference]: Finished difference Result 282 states and 443 transitions. [2023-12-19 09:27:58,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 09:27:58,870 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), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 148 [2023-12-19 09:27:58,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:27:58,874 INFO L225 Difference]: With dead ends: 282 [2023-12-19 09:27:58,874 INFO L226 Difference]: Without dead ends: 200 [2023-12-19 09:27:58,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 09:27:58,877 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 93 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 09:27:58,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 343 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 09:27:58,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-19 09:27:58,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 150. [2023-12-19 09:27:58,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 103 states have (on average 1.3980582524271845) internal successors, (144), 103 states have internal predecessors, (144), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-19 09:27:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 232 transitions. [2023-12-19 09:27:58,902 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 232 transitions. Word has length 148 [2023-12-19 09:27:58,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:27:58,903 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 232 transitions. [2023-12-19 09:27:58,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 09:27:58,903 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 232 transitions. [2023-12-19 09:27:58,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-19 09:27:58,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:27:58,908 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:27:58,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 09:27:59,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:27:59,115 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:27:59,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:27:59,116 INFO L85 PathProgramCache]: Analyzing trace with hash 969984936, now seen corresponding path program 1 times [2023-12-19 09:27:59,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:27:59,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202363085] [2023-12-19 09:27:59,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:59,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:27:59,163 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:27:59,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [577135904] [2023-12-19 09:27:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:59,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:27:59,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:27:59,165 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:27:59,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 09:27:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:27:59,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 09:27:59,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:27:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 09:27:59,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:27:59,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:27:59,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202363085] [2023-12-19 09:27:59,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:27:59,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577135904] [2023-12-19 09:27:59,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577135904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:27:59,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:27:59,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 09:27:59,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539245300] [2023-12-19 09:27:59,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:27:59,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 09:27:59,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:27:59,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 09:27:59,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 09:27:59,406 INFO L87 Difference]: Start difference. First operand 150 states and 232 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 09:27:59,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:27:59,451 INFO L93 Difference]: Finished difference Result 350 states and 542 transitions. [2023-12-19 09:27:59,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 09:27:59,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 149 [2023-12-19 09:27:59,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:27:59,456 INFO L225 Difference]: With dead ends: 350 [2023-12-19 09:27:59,456 INFO L226 Difference]: Without dead ends: 245 [2023-12-19 09:27:59,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 09:27:59,460 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 54 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 09:27:59,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 220 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 09:27:59,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-19 09:27:59,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 242. [2023-12-19 09:27:59,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 172 states have (on average 1.4127906976744187) internal successors, (243), 172 states have internal predecessors, (243), 66 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-19 09:27:59,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 375 transitions. [2023-12-19 09:27:59,496 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 375 transitions. Word has length 149 [2023-12-19 09:27:59,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:27:59,496 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 375 transitions. [2023-12-19 09:27:59,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 09:27:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 375 transitions. [2023-12-19 09:27:59,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-19 09:27:59,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:27:59,503 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:27:59,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 09:27:59,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:27:59,709 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:27:59,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:27:59,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1188839654, now seen corresponding path program 1 times [2023-12-19 09:27:59,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:27:59,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729495430] [2023-12-19 09:27:59,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:59,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:27:59,757 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:27:59,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977054058] [2023-12-19 09:27:59,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:27:59,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:27:59,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:27:59,762 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:27:59,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 09:27:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:27:59,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 09:27:59,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:28:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 452 proven. 84 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-12-19 09:28:00,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:28:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 36 proven. 87 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2023-12-19 09:28:00,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:28:00,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729495430] [2023-12-19 09:28:00,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:28:00,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977054058] [2023-12-19 09:28:00,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977054058] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 09:28:00,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 09:28:00,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-12-19 09:28:00,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68402774] [2023-12-19 09:28:00,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 09:28:00,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-19 09:28:00,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:28:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-19 09:28:00,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-12-19 09:28:00,491 INFO L87 Difference]: Start difference. First operand 242 states and 375 transitions. Second operand has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 4 states have call successors, (43), 3 states have call predecessors, (43), 7 states have return successors, (44), 3 states have call predecessors, (44), 4 states have call successors, (44) [2023-12-19 09:28:01,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:28:01,330 INFO L93 Difference]: Finished difference Result 673 states and 981 transitions. [2023-12-19 09:28:01,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-19 09:28:01,331 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 4 states have call successors, (43), 3 states have call predecessors, (43), 7 states have return successors, (44), 3 states have call predecessors, (44), 4 states have call successors, (44) Word has length 149 [2023-12-19 09:28:01,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:28:01,334 INFO L225 Difference]: With dead ends: 673 [2023-12-19 09:28:01,335 INFO L226 Difference]: Without dead ends: 486 [2023-12-19 09:28:01,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=511, Invalid=1295, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 09:28:01,337 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 643 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 09:28:01,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 423 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 09:28:01,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-12-19 09:28:01,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 305. [2023-12-19 09:28:01,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 226 states have (on average 1.3672566371681416) internal successors, (309), 226 states have internal predecessors, (309), 66 states have call successors, (66), 12 states have call predecessors, (66), 12 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-19 09:28:01,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 441 transitions. [2023-12-19 09:28:01,373 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 441 transitions. Word has length 149 [2023-12-19 09:28:01,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:28:01,373 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 441 transitions. [2023-12-19 09:28:01,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 4 states have call successors, (43), 3 states have call predecessors, (43), 7 states have return successors, (44), 3 states have call predecessors, (44), 4 states have call successors, (44) [2023-12-19 09:28:01,374 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 441 transitions. [2023-12-19 09:28:01,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-19 09:28:01,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:28:01,375 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:28:01,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 09:28:01,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:28:01,585 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:28:01,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:28:01,585 INFO L85 PathProgramCache]: Analyzing trace with hash 177722404, now seen corresponding path program 1 times [2023-12-19 09:28:01,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:28:01,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758640360] [2023-12-19 09:28:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:28:01,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:28:01,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:28:01,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623004171] [2023-12-19 09:28:01,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:28:01,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:28:01,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:28:01,633 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:28:01,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 09:28:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:28:01,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 09:28:01,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:28:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 21 proven. 63 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-19 09:28:02,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:28:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-12-19 09:28:03,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:28:03,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758640360] [2023-12-19 09:28:03,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:28:03,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623004171] [2023-12-19 09:28:03,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623004171] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 09:28:03,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 09:28:03,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 14 [2023-12-19 09:28:03,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403800947] [2023-12-19 09:28:03,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 09:28:03,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 09:28:03,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:28:03,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 09:28:03,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-12-19 09:28:03,395 INFO L87 Difference]: Start difference. First operand 305 states and 441 transitions. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 4 states have call successors, (44), 3 states have call predecessors, (44), 4 states have return successors, (44), 2 states have call predecessors, (44), 4 states have call successors, (44) [2023-12-19 09:28:04,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:28:04,271 INFO L93 Difference]: Finished difference Result 737 states and 1069 transitions. [2023-12-19 09:28:04,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 09:28:04,272 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 4 states have call successors, (44), 3 states have call predecessors, (44), 4 states have return successors, (44), 2 states have call predecessors, (44), 4 states have call successors, (44) Word has length 149 [2023-12-19 09:28:04,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:28:04,274 INFO L225 Difference]: With dead ends: 737 [2023-12-19 09:28:04,274 INFO L226 Difference]: Without dead ends: 488 [2023-12-19 09:28:04,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=369, Unknown=0, NotChecked=0, Total=600 [2023-12-19 09:28:04,275 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 332 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 09:28:04,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 464 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 09:28:04,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-12-19 09:28:04,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 365. [2023-12-19 09:28:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 286 states have (on average 1.3741258741258742) internal successors, (393), 286 states have internal predecessors, (393), 66 states have call successors, (66), 12 states have call predecessors, (66), 12 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-19 09:28:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 525 transitions. [2023-12-19 09:28:04,304 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 525 transitions. Word has length 149 [2023-12-19 09:28:04,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:28:04,305 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 525 transitions. [2023-12-19 09:28:04,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 4 states have call successors, (44), 3 states have call predecessors, (44), 4 states have return successors, (44), 2 states have call predecessors, (44), 4 states have call successors, (44) [2023-12-19 09:28:04,305 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 525 transitions. [2023-12-19 09:28:04,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-19 09:28:04,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:28:04,307 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:28:04,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 09:28:04,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:28:04,512 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:28:04,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:28:04,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1564908534, now seen corresponding path program 1 times [2023-12-19 09:28:04,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:28:04,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125504924] [2023-12-19 09:28:04,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:28:04,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:28:04,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:28:04,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1569148106] [2023-12-19 09:28:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:28:04,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:28:04,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:28:04,548 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:28:04,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 09:28:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:28:04,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 09:28:04,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:28:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 464 proven. 81 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-12-19 09:28:04,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:28:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 39 proven. 84 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2023-12-19 09:28:05,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:28:05,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125504924] [2023-12-19 09:28:05,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:28:05,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569148106] [2023-12-19 09:28:05,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569148106] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 09:28:05,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 09:28:05,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-19 09:28:05,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888732797] [2023-12-19 09:28:05,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 09:28:05,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 09:28:05,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:28:05,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 09:28:05,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-19 09:28:05,131 INFO L87 Difference]: Start difference. First operand 365 states and 525 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 3 states have call successors, (37), 3 states have call predecessors, (37), 7 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2023-12-19 09:28:05,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:28:05,602 INFO L93 Difference]: Finished difference Result 617 states and 874 transitions. [2023-12-19 09:28:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-19 09:28:05,603 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 3 states have call successors, (37), 3 states have call predecessors, (37), 7 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 150 [2023-12-19 09:28:05,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:28:05,604 INFO L225 Difference]: With dead ends: 617 [2023-12-19 09:28:05,604 INFO L226 Difference]: Without dead ends: 365 [2023-12-19 09:28:05,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 286 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=279, Invalid=651, Unknown=0, NotChecked=0, Total=930 [2023-12-19 09:28:05,606 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 135 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 09:28:05,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 490 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 09:28:05,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-12-19 09:28:05,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 339. [2023-12-19 09:28:05,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 254 states have (on average 1.3228346456692914) internal successors, (336), 254 states have internal predecessors, (336), 66 states have call successors, (66), 18 states have call predecessors, (66), 18 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-19 09:28:05,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 468 transitions. [2023-12-19 09:28:05,633 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 468 transitions. Word has length 150 [2023-12-19 09:28:05,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:28:05,633 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 468 transitions. [2023-12-19 09:28:05,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 3 states have call successors, (37), 3 states have call predecessors, (37), 7 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2023-12-19 09:28:05,633 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 468 transitions. [2023-12-19 09:28:05,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-19 09:28:05,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:28:05,634 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:28:05,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 09:28:05,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:28:05,839 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:28:05,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:28:05,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1879026051, now seen corresponding path program 1 times [2023-12-19 09:28:05,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:28:05,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354212354] [2023-12-19 09:28:05,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:28:05,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:28:05,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:28:05,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044091707] [2023-12-19 09:28:05,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:28:05,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:28:05,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:28:05,856 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:28:05,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 09:28:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:28:05,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 09:28:05,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:28:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-19 09:28:06,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:28:06,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:28:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354212354] [2023-12-19 09:28:06,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:28:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044091707] [2023-12-19 09:28:06,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044091707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:28:06,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:28:06,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 09:28:06,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074689126] [2023-12-19 09:28:06,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:28:06,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 09:28:06,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:28:06,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 09:28:06,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 09:28:06,024 INFO L87 Difference]: Start difference. First operand 339 states and 468 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-19 09:28:06,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:28:06,284 INFO L93 Difference]: Finished difference Result 738 states and 1025 transitions. [2023-12-19 09:28:06,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 09:28:06,284 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), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 150 [2023-12-19 09:28:06,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:28:06,289 INFO L225 Difference]: With dead ends: 738 [2023-12-19 09:28:06,289 INFO L226 Difference]: Without dead ends: 522 [2023-12-19 09:28:06,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-19 09:28:06,291 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 229 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 09:28:06,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 263 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 09:28:06,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2023-12-19 09:28:06,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 518. [2023-12-19 09:28:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 377 states have (on average 1.3156498673740054) internal successors, (496), 377 states have internal predecessors, (496), 110 states have call successors, (110), 30 states have call predecessors, (110), 30 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-19 09:28:06,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 716 transitions. [2023-12-19 09:28:06,356 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 716 transitions. Word has length 150 [2023-12-19 09:28:06,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:28:06,356 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 716 transitions. [2023-12-19 09:28:06,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-19 09:28:06,356 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 716 transitions. [2023-12-19 09:28:06,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-19 09:28:06,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:28:06,358 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:28:06,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 09:28:06,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 09:28:06,564 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:28:06,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:28:06,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1404823995, now seen corresponding path program 1 times [2023-12-19 09:28:06,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:28:06,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113030808] [2023-12-19 09:28:06,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:28:06,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:28:06,578 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:28:06,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912743961] [2023-12-19 09:28:06,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:28:06,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:28:06,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:28:06,580 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:28:06,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 09:28:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:28:06,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 09:28:06,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:28:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 09:28:06,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:28:06,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:28:06,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113030808] [2023-12-19 09:28:06,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:28:06,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912743961] [2023-12-19 09:28:06,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912743961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:28:06,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:28:06,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 09:28:06,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030648457] [2023-12-19 09:28:06,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:28:06,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 09:28:06,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:28:06,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 09:28:06,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 09:28:06,881 INFO L87 Difference]: Start difference. First operand 518 states and 716 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 09:28:07,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:28:07,072 INFO L93 Difference]: Finished difference Result 950 states and 1322 transitions. [2023-12-19 09:28:07,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 09:28:07,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 150 [2023-12-19 09:28:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:28:07,075 INFO L225 Difference]: With dead ends: 950 [2023-12-19 09:28:07,075 INFO L226 Difference]: Without dead ends: 555 [2023-12-19 09:28:07,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-19 09:28:07,077 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 82 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 09:28:07,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 271 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 09:28:07,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-12-19 09:28:07,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2023-12-19 09:28:07,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 402 states have (on average 1.318407960199005) internal successors, (530), 402 states have internal predecessors, (530), 110 states have call successors, (110), 30 states have call predecessors, (110), 30 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-19 09:28:07,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 750 transitions. [2023-12-19 09:28:07,135 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 750 transitions. Word has length 150 [2023-12-19 09:28:07,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:28:07,136 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 750 transitions. [2023-12-19 09:28:07,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 09:28:07,136 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 750 transitions. [2023-12-19 09:28:07,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-19 09:28:07,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:28:07,137 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:28:07,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 09:28:07,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:28:07,345 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:28:07,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:28:07,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1196362459, now seen corresponding path program 1 times [2023-12-19 09:28:07,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:28:07,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395774556] [2023-12-19 09:28:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:28:07,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:28:07,368 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:28:07,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804833901] [2023-12-19 09:28:07,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:28:07,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:28:07,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:28:07,386 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:28:07,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 09:28:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:28:07,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 75 conjunts are in the unsatisfiable core [2023-12-19 09:28:07,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:28:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 334 proven. 267 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2023-12-19 09:28:10,374 INFO L327 TraceCheckSpWp]: Computing backward predicates...