/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/array-cav19/array_init_nondet_vars.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 20:31:49,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 20:31:49,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 20:31:49,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 20:31:49,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 20:31:49,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 20:31:49,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 20:31:49,692 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 20:31:49,693 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 20:31:49,693 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 20:31:49,693 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 20:31:49,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 20:31:49,694 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 20:31:49,694 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 20:31:49,695 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 20:31:49,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 20:31:49,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 20:31:49,696 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 20:31:49,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 20:31:49,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 20:31:49,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 20:31:49,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 20:31:49,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 20:31:49,698 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 20:31:49,698 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 20:31:49,698 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 20:31:49,699 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 20:31:49,699 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 20:31:49,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 20:31:49,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 20:31:49,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 20:31:49,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 20:31:49,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 20:31:49,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 20:31:49,701 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 20:31:49,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 20:31:49,701 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 20:31:49,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 20:31:49,702 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 20:31:49,702 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 20:31:49,702 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 20:31:49,702 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 20:31:49,702 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 20:31:49,703 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 20:31:49,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 20:31:49,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 20:31:49,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 20:31:49,936 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 20:31:49,936 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 20:31:49,937 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_init_nondet_vars.c [2023-12-18 20:31:51,041 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 20:31:51,243 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 20:31:51,244 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_init_nondet_vars.c [2023-12-18 20:31:51,249 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69c0e2356/ec340b641fa64cf484c3d6712fcf8715/FLAGa2dd7e203 [2023-12-18 20:31:51,261 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69c0e2356/ec340b641fa64cf484c3d6712fcf8715 [2023-12-18 20:31:51,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 20:31:51,266 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 20:31:51,267 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 20:31:51,267 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 20:31:51,275 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 20:31:51,275 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 08:31:51" (1/1) ... [2023-12-18 20:31:51,276 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eb63f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:31:51, skipping insertion in model container [2023-12-18 20:31:51,276 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 08:31:51" (1/1) ... [2023-12-18 20:31:51,295 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 20:31:51,423 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_init_nondet_vars.c[413,426] [2023-12-18 20:31:51,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 20:31:51,450 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 20:31:51,457 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_init_nondet_vars.c[413,426] [2023-12-18 20:31:51,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 20:31:51,474 INFO L206 MainTranslator]: Completed translation [2023-12-18 20:31:51,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:31:51 WrapperNode [2023-12-18 20:31:51,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 20:31:51,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 20:31:51,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 20:31:51,476 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 20:31:51,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:31:51" (1/1) ... [2023-12-18 20:31:51,486 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:31:51" (1/1) ... [2023-12-18 20:31:51,500 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2023-12-18 20:31:51,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 20:31:51,501 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 20:31:51,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 20:31:51,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 20:31:51,510 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:31:51" (1/1) ... [2023-12-18 20:31:51,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:31:51" (1/1) ... [2023-12-18 20:31:51,511 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:31:51" (1/1) ... [2023-12-18 20:31:51,521 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-18 20:31:51,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:31:51" (1/1) ... [2023-12-18 20:31:51,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:31:51" (1/1) ... [2023-12-18 20:31:51,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:31:51" (1/1) ... [2023-12-18 20:31:51,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:31:51" (1/1) ... [2023-12-18 20:31:51,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:31:51" (1/1) ... [2023-12-18 20:31:51,529 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:31:51" (1/1) ... [2023-12-18 20:31:51,530 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 20:31:51,531 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 20:31:51,531 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 20:31:51,531 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 20:31:51,532 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:31:51" (1/1) ... [2023-12-18 20:31:51,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 20:31:51,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:31:51,563 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) [2023-12-18 20:31:51,571 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 [2023-12-18 20:31:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 20:31:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-18 20:31:51,586 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-18 20:31:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 20:31:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-18 20:31:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-18 20:31:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-18 20:31:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-18 20:31:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 20:31:51,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 20:31:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-18 20:31:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-18 20:31:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-18 20:31:51,640 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 20:31:51,641 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 20:31:51,763 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 20:31:51,791 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 20:31:51,791 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-18 20:31:51,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 08:31:51 BoogieIcfgContainer [2023-12-18 20:31:51,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 20:31:51,793 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 20:31:51,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 20:31:51,796 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 20:31:51,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 08:31:51" (1/3) ... [2023-12-18 20:31:51,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477dd343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 08:31:51, skipping insertion in model container [2023-12-18 20:31:51,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:31:51" (2/3) ... [2023-12-18 20:31:51,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477dd343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 08:31:51, skipping insertion in model container [2023-12-18 20:31:51,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 08:31:51" (3/3) ... [2023-12-18 20:31:51,807 INFO L112 eAbstractionObserver]: Analyzing ICFG array_init_nondet_vars.c [2023-12-18 20:31:51,824 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 20:31:51,824 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-18 20:31:51,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 20:31:51,892 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;@766ea449, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 20:31:51,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-18 20:31:51,896 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-18 20:31:51,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-18 20:31:51,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:31:51,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:31:51,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:31:51,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:31:51,914 INFO L85 PathProgramCache]: Analyzing trace with hash 485743062, now seen corresponding path program 1 times [2023-12-18 20:31:51,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:31:51,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381209752] [2023-12-18 20:31:51,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:31:51,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:31:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:52,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:31:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:52,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:31:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:52,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-18 20:31:52,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:31:52,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381209752] [2023-12-18 20:31:52,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381209752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 20:31:52,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 20:31:52,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 20:31:52,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727251390] [2023-12-18 20:31:52,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 20:31:52,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 20:31:52,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:31:52,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 20:31:52,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 20:31:52,138 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-18 20:31:52,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:31:52,161 INFO L93 Difference]: Finished difference Result 38 states and 54 transitions. [2023-12-18 20:31:52,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 20:31:52,163 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-12-18 20:31:52,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:31:52,167 INFO L225 Difference]: With dead ends: 38 [2023-12-18 20:31:52,167 INFO L226 Difference]: Without dead ends: 18 [2023-12-18 20:31:52,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 20:31:52,172 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 20:31:52,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 20:31:52,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-18 20:31:52,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-18 20:31:52,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-18 20:31:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-12-18 20:31:52,202 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 18 [2023-12-18 20:31:52,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:31:52,203 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-12-18 20:31:52,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-18 20:31:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-12-18 20:31:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-18 20:31:52,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:31:52,205 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:31:52,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 20:31:52,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:31:52,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:31:52,206 INFO L85 PathProgramCache]: Analyzing trace with hash -121450414, now seen corresponding path program 1 times [2023-12-18 20:31:52,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:31:52,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150929029] [2023-12-18 20:31:52,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:31:52,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:31:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:52,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:31:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:52,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:31:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-18 20:31:52,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:31:52,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150929029] [2023-12-18 20:31:52,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150929029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 20:31:52,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 20:31:52,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 20:31:52,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270950008] [2023-12-18 20:31:52,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 20:31:52,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 20:31:52,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:31:52,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 20:31:52,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 20:31:52,385 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-18 20:31:52,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:31:52,435 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2023-12-18 20:31:52,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 20:31:52,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-12-18 20:31:52,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:31:52,438 INFO L225 Difference]: With dead ends: 33 [2023-12-18 20:31:52,438 INFO L226 Difference]: Without dead ends: 26 [2023-12-18 20:31:52,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 20:31:52,440 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 20:31:52,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 42 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 20:31:52,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-18 20:31:52,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2023-12-18 20:31:52,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-18 20:31:52,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2023-12-18 20:31:52,447 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 18 [2023-12-18 20:31:52,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:31:52,447 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2023-12-18 20:31:52,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-18 20:31:52,448 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2023-12-18 20:31:52,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-18 20:31:52,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:31:52,448 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:31:52,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 20:31:52,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:31:52,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:31:52,450 INFO L85 PathProgramCache]: Analyzing trace with hash -787434959, now seen corresponding path program 1 times [2023-12-18 20:31:52,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:31:52,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003664945] [2023-12-18 20:31:52,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:31:52,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:31:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:52,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:31:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:52,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:31:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:52,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:31:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 20:31:52,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:31:52,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003664945] [2023-12-18 20:31:52,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003664945] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:31:52,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011498055] [2023-12-18 20:31:52,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:31:52,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:31:52,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:31:52,992 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) [2023-12-18 20:31:53,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 20:31:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:53,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-18 20:31:53,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:31:53,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:31:53,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:31:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 20:31:53,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:31:53,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:31:53,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:31:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 20:31:53,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011498055] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:31:53,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:31:53,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 19 [2023-12-18 20:31:53,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237850161] [2023-12-18 20:31:53,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:31:53,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-18 20:31:53,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:31:53,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-18 20:31:53,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-12-18 20:31:53,626 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 15 states have internal predecessors, (28), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-18 20:31:53,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:31:53,886 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2023-12-18 20:31:53,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 20:31:53,886 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 15 states have internal predecessors, (28), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 25 [2023-12-18 20:31:53,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:31:53,889 INFO L225 Difference]: With dead ends: 40 [2023-12-18 20:31:53,889 INFO L226 Difference]: Without dead ends: 38 [2023-12-18 20:31:53,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2023-12-18 20:31:53,891 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 49 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 20:31:53,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 135 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 20:31:53,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-18 20:31:53,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2023-12-18 20:31:53,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-18 20:31:53,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-12-18 20:31:53,903 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 25 [2023-12-18 20:31:53,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:31:53,903 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-12-18 20:31:53,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 15 states have internal predecessors, (28), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-18 20:31:53,904 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-12-18 20:31:53,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-18 20:31:53,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:31:53,905 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:31:53,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-18 20:31:54,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:31:54,112 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:31:54,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:31:54,112 INFO L85 PathProgramCache]: Analyzing trace with hash 642107988, now seen corresponding path program 1 times [2023-12-18 20:31:54,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:31:54,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321036960] [2023-12-18 20:31:54,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:31:54,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:31:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:54,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:31:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:54,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:31:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:54,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:31:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:54,207 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 20:31:54,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:31:54,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321036960] [2023-12-18 20:31:54,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321036960] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:31:54,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100097426] [2023-12-18 20:31:54,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:31:54,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:31:54,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:31:54,218 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) [2023-12-18 20:31:54,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 20:31:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:54,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-18 20:31:54,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:31:54,311 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 20:31:54,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:31:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 20:31:54,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100097426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:31:54,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:31:54,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-12-18 20:31:54,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960778727] [2023-12-18 20:31:54,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:31:54,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-18 20:31:54,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:31:54,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-18 20:31:54,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-18 20:31:54,351 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-18 20:31:54,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:31:54,400 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2023-12-18 20:31:54,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-18 20:31:54,400 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2023-12-18 20:31:54,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:31:54,401 INFO L225 Difference]: With dead ends: 44 [2023-12-18 20:31:54,401 INFO L226 Difference]: Without dead ends: 34 [2023-12-18 20:31:54,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-12-18 20:31:54,403 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 20:31:54,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 57 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 20:31:54,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-18 20:31:54,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2023-12-18 20:31:54,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-18 20:31:54,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-12-18 20:31:54,408 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 28 [2023-12-18 20:31:54,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:31:54,408 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-12-18 20:31:54,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-18 20:31:54,408 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-12-18 20:31:54,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-18 20:31:54,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:31:54,409 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:31:54,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-18 20:31:54,615 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,SelfDestructingSolverStorable3 [2023-12-18 20:31:54,615 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:31:54,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:31:54,615 INFO L85 PathProgramCache]: Analyzing trace with hash -575027342, now seen corresponding path program 2 times [2023-12-18 20:31:54,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:31:54,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767436940] [2023-12-18 20:31:54,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:31:54,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:31:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:54,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:31:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:54,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:31:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:54,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:31:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:55,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:31:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:31:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 20:31:55,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:31:55,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767436940] [2023-12-18 20:31:55,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767436940] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:31:55,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141552467] [2023-12-18 20:31:55,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 20:31:55,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:31:55,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:31:55,033 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) [2023-12-18 20:31:55,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 20:31:55,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 20:31:55,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:31:55,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-18 20:31:55,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:31:55,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:31:55,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-18 20:31:55,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:31:55,520 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 20:31:55,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:31:59,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141552467] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:31:59,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:31:59,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 23 [2023-12-18 20:31:59,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001821673] [2023-12-18 20:31:59,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:31:59,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-18 20:31:59,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:31:59,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-18 20:31:59,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=545, Unknown=1, NotChecked=0, Total=650 [2023-12-18 20:31:59,723 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 18 states have internal predecessors, (31), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-18 20:32:04,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 20:32:12,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 20:32:12,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:32:12,810 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2023-12-18 20:32:12,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-18 20:32:12,813 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 18 states have internal predecessors, (31), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 32 [2023-12-18 20:32:12,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:32:12,813 INFO L225 Difference]: With dead ends: 59 [2023-12-18 20:32:12,813 INFO L226 Difference]: Without dead ends: 57 [2023-12-18 20:32:12,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=338, Invalid=1466, Unknown=2, NotChecked=0, Total=1806 [2023-12-18 20:32:12,815 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 207 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 41 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-18 20:32:12,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 140 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 241 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2023-12-18 20:32:12,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-18 20:32:12,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 35. [2023-12-18 20:32:12,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-18 20:32:12,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2023-12-18 20:32:12,823 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 32 [2023-12-18 20:32:12,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:32:12,824 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2023-12-18 20:32:12,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 18 states have internal predecessors, (31), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-18 20:32:12,824 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2023-12-18 20:32:12,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-18 20:32:12,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:32:12,825 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:32:12,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 20:32:13,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:32:13,026 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:32:13,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:32:13,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1990599027, now seen corresponding path program 2 times [2023-12-18 20:32:13,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:32:13,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103961571] [2023-12-18 20:32:13,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:32:13,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:32:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:13,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:32:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:13,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:32:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:13,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:32:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:13,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:32:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 20:32:13,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:32:13,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103961571] [2023-12-18 20:32:13,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103961571] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:32:13,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128739576] [2023-12-18 20:32:13,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 20:32:13,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:32:13,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:32:13,389 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) [2023-12-18 20:32:13,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 20:32:13,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 20:32:13,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:32:13,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-18 20:32:13,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:32:13,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-18 20:32:13,910 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-18 20:32:13,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 17 [2023-12-18 20:32:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-18 20:32:13,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:32:14,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-12-18 20:32:14,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2023-12-18 20:32:14,435 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 20:32:14,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128739576] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:32:14,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:32:14,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 31 [2023-12-18 20:32:14,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776544179] [2023-12-18 20:32:14,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:32:14,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-18 20:32:14,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:32:14,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-18 20:32:14,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2023-12-18 20:32:14,438 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 31 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 25 states have internal predecessors, (47), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) [2023-12-18 20:32:15,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:32:15,355 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2023-12-18 20:32:15,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-18 20:32:15,356 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 25 states have internal predecessors, (47), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) Word has length 35 [2023-12-18 20:32:15,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:32:15,357 INFO L225 Difference]: With dead ends: 51 [2023-12-18 20:32:15,358 INFO L226 Difference]: Without dead ends: 41 [2023-12-18 20:32:15,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=431, Invalid=2019, Unknown=0, NotChecked=0, Total=2450 [2023-12-18 20:32:15,359 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 93 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 20:32:15,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 137 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 20:32:15,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-18 20:32:15,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2023-12-18 20:32:15,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-18 20:32:15,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2023-12-18 20:32:15,367 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 35 [2023-12-18 20:32:15,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:32:15,368 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2023-12-18 20:32:15,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 25 states have internal predecessors, (47), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) [2023-12-18 20:32:15,368 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2023-12-18 20:32:15,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-18 20:32:15,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:32:15,369 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:32:15,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-18 20:32:15,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:32:15,575 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:32:15,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:32:15,575 INFO L85 PathProgramCache]: Analyzing trace with hash 348805492, now seen corresponding path program 3 times [2023-12-18 20:32:15,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:32:15,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418138057] [2023-12-18 20:32:15,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:32:15,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:32:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:15,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:32:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:15,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:32:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:15,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:32:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:15,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:32:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:32:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-18 20:32:15,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:32:15,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418138057] [2023-12-18 20:32:15,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418138057] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:32:15,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820893980] [2023-12-18 20:32:15,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 20:32:15,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:32:15,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:32:15,944 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) [2023-12-18 20:32:15,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 20:32:16,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-18 20:32:16,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:32:16,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-18 20:32:16,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:32:16,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 20:32:16,273 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-12-18 20:32:16,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2023-12-18 20:32:16,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2023-12-18 20:32:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 20:32:16,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:32:36,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820893980] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:32:36,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:32:36,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2023-12-18 20:32:36,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859962734] [2023-12-18 20:32:36,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:32:36,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-18 20:32:36,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:32:36,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-18 20:32:36,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=548, Unknown=5, NotChecked=0, Total=650 [2023-12-18 20:32:36,652 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-18 20:32:40,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 20:32:41,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:32:41,037 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2023-12-18 20:32:41,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-18 20:32:41,038 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) Word has length 42 [2023-12-18 20:32:41,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:32:41,038 INFO L225 Difference]: With dead ends: 54 [2023-12-18 20:32:41,038 INFO L226 Difference]: Without dead ends: 52 [2023-12-18 20:32:41,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=221, Invalid=1106, Unknown=5, NotChecked=0, Total=1332 [2023-12-18 20:32:41,040 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 74 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-18 20:32:41,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 157 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 249 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-18 20:32:41,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-18 20:32:41,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2023-12-18 20:32:41,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-18 20:32:41,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2023-12-18 20:32:41,053 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 42 [2023-12-18 20:32:41,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:32:41,054 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2023-12-18 20:32:41,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-18 20:32:41,054 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2023-12-18 20:32:41,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-18 20:32:41,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:32:41,059 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:32:41,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 20:32:41,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:32:41,260 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:32:41,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:32:41,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1744123953, now seen corresponding path program 4 times [2023-12-18 20:32:41,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:32:41,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575501145] [2023-12-18 20:32:41,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:32:41,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:32:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:41,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:32:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:41,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:32:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:41,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:32:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:41,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:32:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:41,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:32:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-18 20:32:41,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:32:41,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575501145] [2023-12-18 20:32:41,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575501145] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:32:41,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470894759] [2023-12-18 20:32:41,704 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 20:32:41,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:32:41,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:32:41,705 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) [2023-12-18 20:32:41,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 20:32:41,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 20:32:41,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:32:41,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-18 20:32:41,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:32:41,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:32:42,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:32:42,055 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-18 20:32:42,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:32:42,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:32:42,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:32:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-18 20:32:42,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470894759] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:32:42,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:32:42,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 31 [2023-12-18 20:32:42,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056031701] [2023-12-18 20:32:42,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:32:42,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-18 20:32:42,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:32:42,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-18 20:32:42,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2023-12-18 20:32:42,334 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 26 states have internal predecessors, (56), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (11), 10 states have call predecessors, (11), 8 states have call successors, (11) [2023-12-18 20:32:42,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:32:42,837 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2023-12-18 20:32:42,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-18 20:32:42,838 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 26 states have internal predecessors, (56), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (11), 10 states have call predecessors, (11), 8 states have call successors, (11) Word has length 45 [2023-12-18 20:32:42,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:32:42,839 INFO L225 Difference]: With dead ends: 66 [2023-12-18 20:32:42,839 INFO L226 Difference]: Without dead ends: 64 [2023-12-18 20:32:42,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=284, Invalid=1608, Unknown=0, NotChecked=0, Total=1892 [2023-12-18 20:32:42,840 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 106 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 20:32:42,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 205 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 20:32:42,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-18 20:32:42,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 45. [2023-12-18 20:32:42,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-18 20:32:42,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2023-12-18 20:32:42,849 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 45 [2023-12-18 20:32:42,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:32:42,849 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2023-12-18 20:32:42,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 26 states have internal predecessors, (56), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (11), 10 states have call predecessors, (11), 8 states have call successors, (11) [2023-12-18 20:32:42,849 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2023-12-18 20:32:42,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-18 20:32:42,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:32:42,850 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:32:42,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-18 20:32:43,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:32:43,058 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:32:43,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:32:43,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1312062380, now seen corresponding path program 5 times [2023-12-18 20:32:43,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:32:43,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984460902] [2023-12-18 20:32:43,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:32:43,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:32:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:43,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:32:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:43,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:32:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:43,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:32:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:43,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:32:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:43,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:32:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-18 20:32:43,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:32:43,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984460902] [2023-12-18 20:32:43,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984460902] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:32:43,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826467611] [2023-12-18 20:32:43,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 20:32:43,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:32:43,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:32:43,186 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) [2023-12-18 20:32:43,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 20:32:43,247 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-18 20:32:43,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:32:43,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-18 20:32:43,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:32:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-18 20:32:43,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:32:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-18 20:32:43,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826467611] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:32:43,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:32:43,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-12-18 20:32:43,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199077346] [2023-12-18 20:32:43,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:32:43,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-18 20:32:43,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:32:43,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-18 20:32:43,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-12-18 20:32:43,434 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-18 20:32:43,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:32:43,542 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2023-12-18 20:32:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-18 20:32:43,543 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 48 [2023-12-18 20:32:43,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:32:43,543 INFO L225 Difference]: With dead ends: 70 [2023-12-18 20:32:43,543 INFO L226 Difference]: Without dead ends: 54 [2023-12-18 20:32:43,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 93 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2023-12-18 20:32:43,544 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 20:32:43,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 131 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 20:32:43,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-18 20:32:43,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 41. [2023-12-18 20:32:43,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-18 20:32:43,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2023-12-18 20:32:43,552 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 48 [2023-12-18 20:32:43,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:32:43,553 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2023-12-18 20:32:43,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-18 20:32:43,553 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2023-12-18 20:32:43,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-18 20:32:43,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:32:43,554 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:32:43,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 20:32:43,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:32:43,765 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:32:43,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:32:43,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1159209714, now seen corresponding path program 6 times [2023-12-18 20:32:43,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:32:43,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800076633] [2023-12-18 20:32:43,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:32:43,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:32:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:44,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:32:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:44,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:32:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:44,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:32:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:44,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:32:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:44,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:32:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:44,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:32:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:32:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 41 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-18 20:32:44,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:32:44,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800076633] [2023-12-18 20:32:44,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800076633] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:32:44,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097787127] [2023-12-18 20:32:44,260 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 20:32:44,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:32:44,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:32:44,261 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) [2023-12-18 20:32:44,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 20:32:44,334 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-18 20:32:44,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:32:44,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-18 20:32:44,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:32:44,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 20:32:44,630 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-12-18 20:32:44,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2023-12-18 20:32:44,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2023-12-18 20:32:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 26 proven. 41 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-18 20:32:44,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:32:53,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097787127] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:32:53,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:32:53,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 29 [2023-12-18 20:32:53,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750770660] [2023-12-18 20:32:53,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:32:53,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-18 20:32:53,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:32:53,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-18 20:32:53,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=995, Unknown=2, NotChecked=0, Total=1122 [2023-12-18 20:32:53,005 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 25 states have internal predecessors, (51), 10 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-18 20:32:57,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 20:33:01,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 20:33:01,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:33:01,702 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2023-12-18 20:33:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-18 20:33:01,702 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 25 states have internal predecessors, (51), 10 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) Word has length 52 [2023-12-18 20:33:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:33:01,703 INFO L225 Difference]: With dead ends: 56 [2023-12-18 20:33:01,703 INFO L226 Difference]: Without dead ends: 54 [2023-12-18 20:33:01,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=380, Invalid=2374, Unknown=2, NotChecked=0, Total=2756 [2023-12-18 20:33:01,704 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 101 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 20 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-18 20:33:01,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 205 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 442 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2023-12-18 20:33:01,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-18 20:33:01,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2023-12-18 20:33:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-18 20:33:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2023-12-18 20:33:01,713 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 52 [2023-12-18 20:33:01,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:33:01,713 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2023-12-18 20:33:01,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 25 states have internal predecessors, (51), 10 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-18 20:33:01,714 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2023-12-18 20:33:01,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-18 20:33:01,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:33:01,714 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:33:01,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 20:33:01,920 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,SelfDestructingSolverStorable9 [2023-12-18 20:33:01,920 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:33:01,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:33:01,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1809836557, now seen corresponding path program 7 times [2023-12-18 20:33:01,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:33:01,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668721659] [2023-12-18 20:33:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:33:01,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:33:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:02,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:33:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:02,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:33:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:02,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:33:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:02,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:33:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:02,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:33:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:02,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:33:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:02,285 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 15 proven. 46 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-18 20:33:02,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:33:02,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668721659] [2023-12-18 20:33:02,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668721659] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:33:02,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10178657] [2023-12-18 20:33:02,285 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 20:33:02,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:33:02,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:33:02,288 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) [2023-12-18 20:33:02,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 20:33:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:02,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-18 20:33:02,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:33:02,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:33:02,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:33:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 15 proven. 46 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-18 20:33:02,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:33:02,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:33:02,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:33:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 15 proven. 46 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-18 20:33:03,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10178657] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:33:03,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:33:03,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 31 [2023-12-18 20:33:03,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324245517] [2023-12-18 20:33:03,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:33:03,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-18 20:33:03,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:33:03,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-18 20:33:03,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=819, Unknown=0, NotChecked=0, Total=930 [2023-12-18 20:33:03,076 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 31 states, 30 states have (on average 2.0) internal successors, (60), 27 states have internal predecessors, (60), 10 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-18 20:33:03,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:33:03,642 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2023-12-18 20:33:03,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-18 20:33:03,642 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.0) internal successors, (60), 27 states have internal predecessors, (60), 10 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) Word has length 55 [2023-12-18 20:33:03,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:33:03,643 INFO L225 Difference]: With dead ends: 79 [2023-12-18 20:33:03,643 INFO L226 Difference]: Without dead ends: 77 [2023-12-18 20:33:03,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 102 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=294, Invalid=1868, Unknown=0, NotChecked=0, Total=2162 [2023-12-18 20:33:03,644 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 114 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 20:33:03,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 290 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 20:33:03,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-18 20:33:03,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 55. [2023-12-18 20:33:03,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-18 20:33:03,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2023-12-18 20:33:03,654 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 55 [2023-12-18 20:33:03,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:33:03,654 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2023-12-18 20:33:03,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.0) internal successors, (60), 27 states have internal predecessors, (60), 10 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-18 20:33:03,655 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2023-12-18 20:33:03,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-18 20:33:03,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:33:03,655 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:33:03,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-18 20:33:03,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:33:03,861 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:33:03,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:33:03,862 INFO L85 PathProgramCache]: Analyzing trace with hash -2110802094, now seen corresponding path program 8 times [2023-12-18 20:33:03,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:33:03,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410551500] [2023-12-18 20:33:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:33:03,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:33:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:04,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:33:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:04,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:33:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:04,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:33:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:04,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:33:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:04,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:33:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:04,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:33:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:04,021 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 32 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-18 20:33:04,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:33:04,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410551500] [2023-12-18 20:33:04,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410551500] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:33:04,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121764784] [2023-12-18 20:33:04,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 20:33:04,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:33:04,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:33:04,022 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) [2023-12-18 20:33:04,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 20:33:04,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 20:33:04,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:33:04,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-18 20:33:04,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:33:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 26 proven. 22 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-18 20:33:04,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:33:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 26 proven. 22 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-18 20:33:04,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121764784] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:33:04,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:33:04,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2023-12-18 20:33:04,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396540744] [2023-12-18 20:33:04,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:33:04,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-18 20:33:04,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:33:04,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-18 20:33:04,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2023-12-18 20:33:04,317 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-18 20:33:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:33:04,433 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2023-12-18 20:33:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 20:33:04,434 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 58 [2023-12-18 20:33:04,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:33:04,435 INFO L225 Difference]: With dead ends: 83 [2023-12-18 20:33:04,435 INFO L226 Difference]: Without dead ends: 64 [2023-12-18 20:33:04,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 112 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2023-12-18 20:33:04,436 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 36 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 20:33:04,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 114 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 20:33:04,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-18 20:33:04,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2023-12-18 20:33:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-18 20:33:04,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2023-12-18 20:33:04,445 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 58 [2023-12-18 20:33:04,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:33:04,446 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2023-12-18 20:33:04,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-18 20:33:04,446 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2023-12-18 20:33:04,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-18 20:33:04,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:33:04,447 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:33:04,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 20:33:04,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-18 20:33:04,647 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:33:04,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:33:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash 982598516, now seen corresponding path program 9 times [2023-12-18 20:33:04,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:33:04,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934472340] [2023-12-18 20:33:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:33:04,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:33:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:05,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:33:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:05,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:33:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:05,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:33:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:33:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:05,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:33:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:05,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:33:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:05,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:33:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 65 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-18 20:33:05,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:33:05,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934472340] [2023-12-18 20:33:05,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934472340] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:33:05,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562547981] [2023-12-18 20:33:05,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 20:33:05,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:33:05,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:33:05,154 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:33:05,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 20:33:05,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-18 20:33:05,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:33:05,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-18 20:33:05,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:33:05,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 20:33:05,577 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-12-18 20:33:05,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2023-12-18 20:33:05,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2023-12-18 20:33:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 33 proven. 65 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-18 20:33:05,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:33:14,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562547981] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:33:14,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:33:14,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 32 [2023-12-18 20:33:14,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599841441] [2023-12-18 20:33:14,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:33:14,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-18 20:33:14,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:33:14,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-18 20:33:14,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=985, Unknown=2, NotChecked=0, Total=1122 [2023-12-18 20:33:14,151 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 32 states, 32 states have (on average 1.875) internal successors, (60), 28 states have internal predecessors, (60), 11 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2023-12-18 20:33:18,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 20:33:22,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 20:33:26,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 20:33:26,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:33:26,866 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2023-12-18 20:33:26,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-18 20:33:26,866 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.875) internal successors, (60), 28 states have internal predecessors, (60), 11 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) Word has length 62 [2023-12-18 20:33:26,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:33:26,867 INFO L225 Difference]: With dead ends: 66 [2023-12-18 20:33:26,867 INFO L226 Difference]: Without dead ends: 64 [2023-12-18 20:33:26,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=331, Invalid=2019, Unknown=2, NotChecked=0, Total=2352 [2023-12-18 20:33:26,868 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 80 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2023-12-18 20:33:26,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 263 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 541 Invalid, 3 Unknown, 0 Unchecked, 12.4s Time] [2023-12-18 20:33:26,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-18 20:33:26,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2023-12-18 20:33:26,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-18 20:33:26,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2023-12-18 20:33:26,886 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 62 [2023-12-18 20:33:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:33:26,886 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2023-12-18 20:33:26,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.875) internal successors, (60), 28 states have internal predecessors, (60), 11 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2023-12-18 20:33:26,886 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2023-12-18 20:33:26,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-18 20:33:26,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:33:26,890 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:33:26,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-18 20:33:27,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-18 20:33:27,108 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:33:27,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:33:27,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1899098575, now seen corresponding path program 10 times [2023-12-18 20:33:27,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:33:27,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116932288] [2023-12-18 20:33:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:33:27,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:33:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:27,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:33:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:27,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:33:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:27,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:33:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:27,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:33:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:27,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:33:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:27,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:33:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:27,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:33:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 73 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-18 20:33:27,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:33:27,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116932288] [2023-12-18 20:33:27,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116932288] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:33:27,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416264234] [2023-12-18 20:33:27,725 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 20:33:27,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:33:27,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:33:27,739 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:33:27,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-18 20:33:27,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 20:33:27,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:33:27,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-18 20:33:27,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:33:28,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:33:28,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:33:28,587 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 21 proven. 76 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-18 20:33:28,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:33:28,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:33:28,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:33:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 73 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-18 20:33:28,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416264234] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:33:28,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:33:28,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 18] total 35 [2023-12-18 20:33:28,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391005483] [2023-12-18 20:33:28,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:33:28,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-18 20:33:28,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:33:28,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-18 20:33:28,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2023-12-18 20:33:28,901 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 31 states have internal predecessors, (70), 12 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) [2023-12-18 20:33:29,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:33:29,791 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2023-12-18 20:33:29,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-18 20:33:29,792 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 31 states have internal predecessors, (70), 12 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) Word has length 65 [2023-12-18 20:33:29,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:33:29,792 INFO L225 Difference]: With dead ends: 92 [2023-12-18 20:33:29,792 INFO L226 Difference]: Without dead ends: 90 [2023-12-18 20:33:29,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 121 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=349, Invalid=2513, Unknown=0, NotChecked=0, Total=2862 [2023-12-18 20:33:29,794 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 143 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 20:33:29,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 299 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 20:33:29,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-18 20:33:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 65. [2023-12-18 20:33:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-18 20:33:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2023-12-18 20:33:29,814 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 65 [2023-12-18 20:33:29,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:33:29,814 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2023-12-18 20:33:29,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 31 states have internal predecessors, (70), 12 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) [2023-12-18 20:33:29,815 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2023-12-18 20:33:29,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-18 20:33:29,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:33:29,816 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:33:29,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-18 20:33:30,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-18 20:33:30,022 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:33:30,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:33:30,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1564143188, now seen corresponding path program 11 times [2023-12-18 20:33:30,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:33:30,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995466231] [2023-12-18 20:33:30,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:33:30,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:33:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:30,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:33:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:30,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:33:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:30,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:33:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:30,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:33:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:30,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:33:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:30,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:33:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:30,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:33:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 27 proven. 48 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-18 20:33:30,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:33:30,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995466231] [2023-12-18 20:33:30,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995466231] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:33:30,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123639948] [2023-12-18 20:33:30,313 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 20:33:30,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:33:30,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:33:30,330 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:33:30,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-18 20:33:30,586 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-12-18 20:33:30,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:33:30,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-18 20:33:30,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:33:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 40 proven. 35 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-18 20:33:30,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:33:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 40 proven. 35 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-18 20:33:30,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123639948] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:33:30,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:33:30,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2023-12-18 20:33:30,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787779865] [2023-12-18 20:33:30,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:33:30,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-18 20:33:30,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:33:30,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-18 20:33:30,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2023-12-18 20:33:30,919 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-18 20:33:31,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:33:31,094 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2023-12-18 20:33:31,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-18 20:33:31,095 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 68 [2023-12-18 20:33:31,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:33:31,095 INFO L225 Difference]: With dead ends: 96 [2023-12-18 20:33:31,095 INFO L226 Difference]: Without dead ends: 74 [2023-12-18 20:33:31,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 131 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2023-12-18 20:33:31,096 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 74 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 20:33:31,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 111 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 20:33:31,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-18 20:33:31,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 61. [2023-12-18 20:33:31,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-18 20:33:31,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2023-12-18 20:33:31,112 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 68 [2023-12-18 20:33:31,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:33:31,112 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2023-12-18 20:33:31,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-18 20:33:31,113 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2023-12-18 20:33:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-18 20:33:31,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:33:31,113 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:33:31,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-18 20:33:31,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-18 20:33:31,321 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:33:31,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:33:31,321 INFO L85 PathProgramCache]: Analyzing trace with hash -693563790, now seen corresponding path program 12 times [2023-12-18 20:33:31,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:33:31,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398430389] [2023-12-18 20:33:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:33:31,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:33:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:32,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:33:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:32,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:33:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:32,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:33:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:32,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:33:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:32,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:33:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:32,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:33:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:32,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:33:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:32,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:33:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:32,211 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 95 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-18 20:33:32,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:33:32,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398430389] [2023-12-18 20:33:32,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398430389] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:33:32,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243018978] [2023-12-18 20:33:32,226 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 20:33:32,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:33:32,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:33:32,241 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:33:32,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-18 20:33:32,420 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-12-18 20:33:32,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:33:32,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-18 20:33:32,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:33:32,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 20:33:32,932 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-12-18 20:33:32,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2023-12-18 20:33:33,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2023-12-18 20:33:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 37 proven. 104 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-18 20:33:33,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:33:53,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243018978] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:33:53,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:33:53,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 36 [2023-12-18 20:33:53,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076029271] [2023-12-18 20:33:53,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:33:53,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-18 20:33:53,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:33:53,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-18 20:33:53,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1247, Unknown=5, NotChecked=0, Total=1406 [2023-12-18 20:33:53,787 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 32 states have internal predecessors, (70), 13 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2023-12-18 20:33:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:33:54,373 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2023-12-18 20:33:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-18 20:33:54,374 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 32 states have internal predecessors, (70), 13 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) Word has length 72 [2023-12-18 20:33:54,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:33:54,374 INFO L225 Difference]: With dead ends: 76 [2023-12-18 20:33:54,374 INFO L226 Difference]: Without dead ends: 74 [2023-12-18 20:33:54,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 84 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=386, Invalid=2579, Unknown=5, NotChecked=0, Total=2970 [2023-12-18 20:33:54,376 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 74 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 20:33:54,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 324 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 20:33:54,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-18 20:33:54,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2023-12-18 20:33:54,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-18 20:33:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2023-12-18 20:33:54,390 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 72 [2023-12-18 20:33:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:33:54,390 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2023-12-18 20:33:54,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 32 states have internal predecessors, (70), 13 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2023-12-18 20:33:54,390 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2023-12-18 20:33:54,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-18 20:33:54,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:33:54,391 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:33:54,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-18 20:33:54,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:33:54,596 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:33:54,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:33:54,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1134393971, now seen corresponding path program 13 times [2023-12-18 20:33:54,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:33:54,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815708073] [2023-12-18 20:33:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:33:54,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:33:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:55,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:33:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:55,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:33:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:55,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:33:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:55,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:33:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:55,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:33:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:55,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:33:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:33:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:55,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:33:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 21 proven. 106 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-18 20:33:55,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:33:55,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815708073] [2023-12-18 20:33:55,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815708073] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:33:55,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354209500] [2023-12-18 20:33:55,122 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 20:33:55,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:33:55,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:33:55,123 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:33:55,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-18 20:33:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:55,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-18 20:33:55,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:33:55,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:33:55,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:33:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 21 proven. 106 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-18 20:33:55,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:33:56,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:33:56,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:33:56,319 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 21 proven. 106 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-18 20:33:56,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354209500] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:33:56,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:33:56,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 20] total 47 [2023-12-18 20:33:56,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035371123] [2023-12-18 20:33:56,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:33:56,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-18 20:33:56,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:33:56,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-18 20:33:56,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2023-12-18 20:33:56,322 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand has 47 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 41 states have internal predecessors, (93), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (22), 22 states have call predecessors, (22), 20 states have call successors, (22) [2023-12-18 20:33:57,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:33:57,194 INFO L93 Difference]: Finished difference Result 105 states and 111 transitions. [2023-12-18 20:33:57,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-18 20:33:57,194 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 41 states have internal predecessors, (93), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (22), 22 states have call predecessors, (22), 20 states have call successors, (22) Word has length 75 [2023-12-18 20:33:57,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:33:57,195 INFO L225 Difference]: With dead ends: 105 [2023-12-18 20:33:57,195 INFO L226 Difference]: Without dead ends: 103 [2023-12-18 20:33:57,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 133 SyntacticMatches, 6 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=499, Invalid=4193, Unknown=0, NotChecked=0, Total=4692 [2023-12-18 20:33:57,197 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 139 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 20:33:57,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 416 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 20:33:57,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-18 20:33:57,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 75. [2023-12-18 20:33:57,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-18 20:33:57,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2023-12-18 20:33:57,210 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 75 [2023-12-18 20:33:57,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:33:57,210 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2023-12-18 20:33:57,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 41 states have internal predecessors, (93), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (22), 22 states have call predecessors, (22), 20 states have call successors, (22) [2023-12-18 20:33:57,210 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2023-12-18 20:33:57,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-18 20:33:57,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:33:57,211 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:33:57,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-18 20:33:57,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-18 20:33:57,412 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:33:57,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:33:57,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1933705938, now seen corresponding path program 14 times [2023-12-18 20:33:57,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:33:57,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954686943] [2023-12-18 20:33:57,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:33:57,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:33:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:57,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:33:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:57,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:33:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:57,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:33:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:57,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:33:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:57,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:33:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:57,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:33:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:57,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:33:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:57,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:33:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:57,627 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 41 proven. 67 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-18 20:33:57,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:33:57,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954686943] [2023-12-18 20:33:57,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954686943] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:33:57,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97528191] [2023-12-18 20:33:57,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 20:33:57,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:33:57,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:33:57,633 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:33:57,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-18 20:33:57,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 20:33:57,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:33:57,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-18 20:33:57,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:33:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 57 proven. 51 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-18 20:33:57,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:33:58,038 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 57 proven. 51 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-18 20:33:58,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97528191] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:33:58,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:33:58,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2023-12-18 20:33:58,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626088749] [2023-12-18 20:33:58,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:33:58,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-18 20:33:58,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:33:58,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-18 20:33:58,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2023-12-18 20:33:58,040 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-18 20:33:58,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:33:58,176 INFO L93 Difference]: Finished difference Result 109 states and 115 transitions. [2023-12-18 20:33:58,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-18 20:33:58,177 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 78 [2023-12-18 20:33:58,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:33:58,177 INFO L225 Difference]: With dead ends: 109 [2023-12-18 20:33:58,178 INFO L226 Difference]: Without dead ends: 84 [2023-12-18 20:33:58,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 150 SyntacticMatches, 13 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2023-12-18 20:33:58,178 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 46 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 20:33:58,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 129 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 20:33:58,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-18 20:33:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 71. [2023-12-18 20:33:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-18 20:33:58,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2023-12-18 20:33:58,191 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 78 [2023-12-18 20:33:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:33:58,191 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2023-12-18 20:33:58,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-18 20:33:58,192 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2023-12-18 20:33:58,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-18 20:33:58,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:33:58,192 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:33:58,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-18 20:33:58,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-18 20:33:58,398 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:33:58,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:33:58,398 INFO L85 PathProgramCache]: Analyzing trace with hash -2083922572, now seen corresponding path program 15 times [2023-12-18 20:33:58,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:33:58,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575956546] [2023-12-18 20:33:58,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:33:58,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:33:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:33:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:58,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:33:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:58,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:33:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:58,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:33:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:58,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:33:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:58,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:33:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:58,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:33:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:59,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:33:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:59,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:33:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:33:59,014 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 21 proven. 131 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-18 20:33:59,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:33:59,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575956546] [2023-12-18 20:33:59,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575956546] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:33:59,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304638890] [2023-12-18 20:33:59,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 20:33:59,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:33:59,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:33:59,016 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:33:59,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-18 20:33:59,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-12-18 20:33:59,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:33:59,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-18 20:33:59,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:33:59,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 20:33:59,800 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-12-18 20:33:59,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2023-12-18 20:34:00,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2023-12-18 20:34:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 47 proven. 131 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-18 20:34:00,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:34:08,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304638890] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:34:08,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:34:08,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 41 [2023-12-18 20:34:08,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463990396] [2023-12-18 20:34:08,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:34:08,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-18 20:34:08,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:34:08,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-18 20:34:08,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1626, Unknown=2, NotChecked=0, Total=1806 [2023-12-18 20:34:08,328 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 41 states, 40 states have (on average 2.0) internal successors, (80), 37 states have internal predecessors, (80), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (17), 17 states have call predecessors, (17), 15 states have call successors, (17) [2023-12-18 20:34:09,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:34:09,093 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2023-12-18 20:34:09,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-18 20:34:09,093 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.0) internal successors, (80), 37 states have internal predecessors, (80), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (17), 17 states have call predecessors, (17), 15 states have call successors, (17) Word has length 82 [2023-12-18 20:34:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:34:09,094 INFO L225 Difference]: With dead ends: 86 [2023-12-18 20:34:09,094 INFO L226 Difference]: Without dead ends: 84 [2023-12-18 20:34:09,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 96 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=448, Invalid=3332, Unknown=2, NotChecked=0, Total=3782 [2023-12-18 20:34:09,095 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 65 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 20:34:09,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 436 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 20:34:09,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-18 20:34:09,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 78. [2023-12-18 20:34:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 61 states have internal predecessors, (63), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-18 20:34:09,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2023-12-18 20:34:09,110 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 82 [2023-12-18 20:34:09,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:34:09,111 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2023-12-18 20:34:09,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.0) internal successors, (80), 37 states have internal predecessors, (80), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (17), 17 states have call predecessors, (17), 15 states have call successors, (17) [2023-12-18 20:34:09,111 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2023-12-18 20:34:09,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-18 20:34:09,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:34:09,112 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:34:09,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-18 20:34:09,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:34:09,318 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:34:09,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:34:09,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1620522033, now seen corresponding path program 16 times [2023-12-18 20:34:09,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:34:09,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280257698] [2023-12-18 20:34:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:34:09,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:34:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:09,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:34:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:09,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:34:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:09,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:34:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:09,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:34:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:09,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:34:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:09,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:34:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:09,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:34:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:09,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:34:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:09,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:34:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 24 proven. 145 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-18 20:34:09,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:34:09,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280257698] [2023-12-18 20:34:09,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280257698] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:34:09,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865681849] [2023-12-18 20:34:09,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 20:34:09,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:34:09,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:34:09,864 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:34:09,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-18 20:34:09,957 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 20:34:09,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:34:09,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-18 20:34:09,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:34:10,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:34:10,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:34:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 30 proven. 151 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-18 20:34:10,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:34:10,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:34:10,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:34:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 24 proven. 145 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-18 20:34:11,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865681849] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:34:11,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:34:11,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 22] total 43 [2023-12-18 20:34:11,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070527190] [2023-12-18 20:34:11,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:34:11,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-18 20:34:11,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:34:11,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-18 20:34:11,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1644, Unknown=0, NotChecked=0, Total=1806 [2023-12-18 20:34:11,049 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 43 states, 42 states have (on average 2.142857142857143) internal successors, (90), 39 states have internal predecessors, (90), 16 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2023-12-18 20:34:12,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:34:12,164 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2023-12-18 20:34:12,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-18 20:34:12,164 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.142857142857143) internal successors, (90), 39 states have internal predecessors, (90), 16 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) Word has length 85 [2023-12-18 20:34:12,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:34:12,165 INFO L225 Difference]: With dead ends: 118 [2023-12-18 20:34:12,165 INFO L226 Difference]: Without dead ends: 116 [2023-12-18 20:34:12,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 159 SyntacticMatches, 8 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1215 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=459, Invalid=4097, Unknown=0, NotChecked=0, Total=4556 [2023-12-18 20:34:12,167 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 162 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 20:34:12,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 508 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 20:34:12,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-18 20:34:12,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 85. [2023-12-18 20:34:12,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 states have internal predecessors, (70), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-18 20:34:12,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2023-12-18 20:34:12,185 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 85 [2023-12-18 20:34:12,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:34:12,185 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2023-12-18 20:34:12,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.142857142857143) internal successors, (90), 39 states have internal predecessors, (90), 16 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2023-12-18 20:34:12,185 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2023-12-18 20:34:12,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-18 20:34:12,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:34:12,186 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:34:12,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-18 20:34:12,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:34:12,386 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:34:12,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:34:12,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1545078868, now seen corresponding path program 17 times [2023-12-18 20:34:12,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:34:12,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757974249] [2023-12-18 20:34:12,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:34:12,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:34:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:12,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:34:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:12,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:34:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:12,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:34:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:12,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:34:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:34:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:12,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:34:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:34:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:34:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:12,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:34:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 58 proven. 89 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-18 20:34:12,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:34:12,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757974249] [2023-12-18 20:34:12,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757974249] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:34:12,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850767456] [2023-12-18 20:34:12,638 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 20:34:12,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:34:12,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:34:12,640 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:34:12,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-18 20:34:12,742 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-12-18 20:34:12,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:34:12,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-18 20:34:12,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:34:12,933 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 77 proven. 70 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-18 20:34:12,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:34:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 77 proven. 70 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-18 20:34:13,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850767456] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:34:13,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:34:13,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2023-12-18 20:34:13,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634903955] [2023-12-18 20:34:13,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:34:13,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-18 20:34:13,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:34:13,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-18 20:34:13,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2023-12-18 20:34:13,095 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 29 states have internal predecessors, (76), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-12-18 20:34:13,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:34:13,264 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2023-12-18 20:34:13,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-18 20:34:13,264 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 29 states have internal predecessors, (76), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 88 [2023-12-18 20:34:13,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:34:13,265 INFO L225 Difference]: With dead ends: 122 [2023-12-18 20:34:13,265 INFO L226 Difference]: Without dead ends: 94 [2023-12-18 20:34:13,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 169 SyntacticMatches, 15 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=997, Unknown=0, NotChecked=0, Total=1332 [2023-12-18 20:34:13,266 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 80 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 20:34:13,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 145 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 20:34:13,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-18 20:34:13,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 81. [2023-12-18 20:34:13,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-18 20:34:13,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2023-12-18 20:34:13,283 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 88 [2023-12-18 20:34:13,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:34:13,283 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2023-12-18 20:34:13,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 29 states have internal predecessors, (76), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-12-18 20:34:13,283 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2023-12-18 20:34:13,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-18 20:34:13,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:34:13,284 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:34:13,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-18 20:34:13,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:34:13,490 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:34:13,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:34:13,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1606978034, now seen corresponding path program 18 times [2023-12-18 20:34:13,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:34:13,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759623774] [2023-12-18 20:34:13,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:34:13,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:34:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:14,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:34:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:14,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:34:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:14,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:34:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:14,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:34:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:14,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:34:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:14,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:34:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:14,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:34:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:14,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:34:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:34:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:14,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:34:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:14,126 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 24 proven. 173 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-18 20:34:14,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:34:14,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759623774] [2023-12-18 20:34:14,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759623774] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:34:14,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234362179] [2023-12-18 20:34:14,127 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 20:34:14,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:34:14,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:34:14,128 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:34:14,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-18 20:34:14,286 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-12-18 20:34:14,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:34:14,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-18 20:34:14,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:34:14,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 20:34:14,780 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-12-18 20:34:14,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2023-12-18 20:34:15,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2023-12-18 20:34:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 45 proven. 194 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-18 20:34:15,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:34:19,273 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (< 8 (select (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~i~0#1|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 28)))) is different from false [2023-12-18 20:34:19,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234362179] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:34:19,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:34:19,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 44 [2023-12-18 20:34:19,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399100559] [2023-12-18 20:34:19,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:34:19,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-18 20:34:19,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:34:19,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-18 20:34:19,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1801, Unknown=1, NotChecked=86, Total=2070 [2023-12-18 20:34:19,281 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 40 states have internal predecessors, (90), 17 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (20), 19 states have call predecessors, (20), 17 states have call successors, (20) [2023-12-18 20:34:20,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:34:20,255 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2023-12-18 20:34:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-18 20:34:20,255 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 40 states have internal predecessors, (90), 17 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (20), 19 states have call predecessors, (20), 17 states have call successors, (20) Word has length 92 [2023-12-18 20:34:20,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:34:20,256 INFO L225 Difference]: With dead ends: 96 [2023-12-18 20:34:20,256 INFO L226 Difference]: Without dead ends: 94 [2023-12-18 20:34:20,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 108 SyntacticMatches, 8 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1255 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=472, Invalid=3821, Unknown=1, NotChecked=128, Total=4422 [2023-12-18 20:34:20,258 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 74 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 20:34:20,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 499 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 20:34:20,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-18 20:34:20,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2023-12-18 20:34:20,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-18 20:34:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2023-12-18 20:34:20,282 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 92 [2023-12-18 20:34:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:34:20,282 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2023-12-18 20:34:20,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 40 states have internal predecessors, (90), 17 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (20), 19 states have call predecessors, (20), 17 states have call successors, (20) [2023-12-18 20:34:20,282 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2023-12-18 20:34:20,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-18 20:34:20,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:34:20,283 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:34:20,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-18 20:34:20,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-18 20:34:20,483 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:34:20,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:34:20,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1782730483, now seen corresponding path program 19 times [2023-12-18 20:34:20,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:34:20,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207802473] [2023-12-18 20:34:20,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:34:20,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:34:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:20,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:34:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:20,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:34:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:21,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:34:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:21,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:34:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:21,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:34:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:21,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:34:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:21,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:34:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:21,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:34:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:21,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:34:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:21,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:34:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 27 proven. 190 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-18 20:34:21,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:34:21,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207802473] [2023-12-18 20:34:21,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207802473] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:34:21,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704514929] [2023-12-18 20:34:21,068 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 20:34:21,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:34:21,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:34:21,073 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:34:21,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-18 20:34:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:21,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-18 20:34:21,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:34:21,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:34:22,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:34:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 27 proven. 190 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-18 20:34:22,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:34:22,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:34:22,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:34:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 27 proven. 190 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-18 20:34:22,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704514929] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:34:22,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:34:22,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 24] total 47 [2023-12-18 20:34:22,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920179129] [2023-12-18 20:34:22,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:34:22,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-18 20:34:22,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:34:22,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-18 20:34:22,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1983, Unknown=0, NotChecked=0, Total=2162 [2023-12-18 20:34:22,334 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand has 47 states, 46 states have (on average 2.1739130434782608) internal successors, (100), 43 states have internal predecessors, (100), 18 states have call successors, (19), 1 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2023-12-18 20:34:23,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:34:23,482 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2023-12-18 20:34:23,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-18 20:34:23,483 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.1739130434782608) internal successors, (100), 43 states have internal predecessors, (100), 18 states have call successors, (19), 1 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) Word has length 95 [2023-12-18 20:34:23,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:34:23,483 INFO L225 Difference]: With dead ends: 131 [2023-12-18 20:34:23,483 INFO L226 Difference]: Without dead ends: 129 [2023-12-18 20:34:23,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 178 SyntacticMatches, 9 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=514, Invalid=5036, Unknown=0, NotChecked=0, Total=5550 [2023-12-18 20:34:23,485 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 161 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 20:34:23,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 672 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 20:34:23,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-12-18 20:34:23,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 95. [2023-12-18 20:34:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 75 states have (on average 1.04) internal successors, (78), 75 states have internal predecessors, (78), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-18 20:34:23,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2023-12-18 20:34:23,501 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 95 [2023-12-18 20:34:23,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:34:23,502 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2023-12-18 20:34:23,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.1739130434782608) internal successors, (100), 43 states have internal predecessors, (100), 18 states have call successors, (19), 1 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2023-12-18 20:34:23,502 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2023-12-18 20:34:23,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-18 20:34:23,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:34:23,503 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:34:23,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-18 20:34:23,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-18 20:34:23,708 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:34:23,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:34:23,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2058804818, now seen corresponding path program 20 times [2023-12-18 20:34:23,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:34:23,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12538197] [2023-12-18 20:34:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:34:23,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:34:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:23,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:34:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:23,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:34:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:23,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:34:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:23,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:34:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:23,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:34:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:23,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:34:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:23,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:34:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:23,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:34:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:23,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:34:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:23,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:34:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 78 proven. 114 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-18 20:34:24,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:34:24,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12538197] [2023-12-18 20:34:24,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12538197] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:34:24,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758727475] [2023-12-18 20:34:24,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 20:34:24,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:34:24,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:34:24,004 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:34:24,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-18 20:34:24,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 20:34:24,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:34:24,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-18 20:34:24,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:34:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 100 proven. 92 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-18 20:34:24,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:34:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 100 proven. 92 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-18 20:34:24,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758727475] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:34:24,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:34:24,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2023-12-18 20:34:24,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847269202] [2023-12-18 20:34:24,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:34:24,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-18 20:34:24,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:34:24,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-18 20:34:24,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2023-12-18 20:34:24,612 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand has 32 states, 32 states have (on average 2.625) internal successors, (84), 32 states have internal predecessors, (84), 10 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-18 20:34:24,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:34:24,785 INFO L93 Difference]: Finished difference Result 135 states and 141 transitions. [2023-12-18 20:34:24,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-18 20:34:24,785 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.625) internal successors, (84), 32 states have internal predecessors, (84), 10 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) Word has length 98 [2023-12-18 20:34:24,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:34:24,786 INFO L225 Difference]: With dead ends: 135 [2023-12-18 20:34:24,786 INFO L226 Difference]: Without dead ends: 104 [2023-12-18 20:34:24,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 188 SyntacticMatches, 17 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=407, Invalid=1233, Unknown=0, NotChecked=0, Total=1640 [2023-12-18 20:34:24,789 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 82 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 20:34:24,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 119 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 20:34:24,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-18 20:34:24,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2023-12-18 20:34:24,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-18 20:34:24,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2023-12-18 20:34:24,804 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 98 [2023-12-18 20:34:24,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:34:24,805 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2023-12-18 20:34:24,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.625) internal successors, (84), 32 states have internal predecessors, (84), 10 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-18 20:34:24,805 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2023-12-18 20:34:24,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 20:34:24,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:34:24,806 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:34:24,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-18 20:34:25,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:34:25,006 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:34:25,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:34:25,006 INFO L85 PathProgramCache]: Analyzing trace with hash 267921268, now seen corresponding path program 21 times [2023-12-18 20:34:25,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:34:25,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640850040] [2023-12-18 20:34:25,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:34:25,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:34:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:25,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:34:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:25,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:34:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:34:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:25,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:34:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:25,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:34:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:25,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:34:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:25,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:34:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:25,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:34:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:34:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:25,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:34:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:25,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:34:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:25,668 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 27 proven. 221 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-12-18 20:34:25,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:34:25,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640850040] [2023-12-18 20:34:25,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640850040] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:34:25,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116654719] [2023-12-18 20:34:25,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 20:34:25,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:34:25,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:34:25,672 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:34:25,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-18 20:34:25,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-12-18 20:34:25,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:34:25,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-18 20:34:25,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:34:26,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 20:34:26,423 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-12-18 20:34:26,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2023-12-18 20:34:26,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2023-12-18 20:34:26,796 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 61 proven. 221 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-18 20:34:26,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:34:47,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116654719] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:34:47,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:34:47,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 49 [2023-12-18 20:34:47,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787864172] [2023-12-18 20:34:47,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:34:47,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-18 20:34:47,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:34:47,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-18 20:34:47,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2330, Unknown=4, NotChecked=0, Total=2550 [2023-12-18 20:34:47,149 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 49 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 45 states have internal predecessors, (100), 19 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (21), 21 states have call predecessors, (21), 19 states have call successors, (21) [2023-12-18 20:34:48,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:34:48,175 INFO L93 Difference]: Finished difference Result 106 states and 109 transitions. [2023-12-18 20:34:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-18 20:34:48,175 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 45 states have internal predecessors, (100), 19 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (21), 21 states have call predecessors, (21), 19 states have call successors, (21) Word has length 102 [2023-12-18 20:34:48,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:34:48,176 INFO L225 Difference]: With dead ends: 106 [2023-12-18 20:34:48,176 INFO L226 Difference]: Without dead ends: 104 [2023-12-18 20:34:48,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 120 SyntacticMatches, 9 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1628 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=558, Invalid=4840, Unknown=4, NotChecked=0, Total=5402 [2023-12-18 20:34:48,178 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 104 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 20:34:48,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 601 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 20:34:48,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-18 20:34:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2023-12-18 20:34:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 77 states have (on average 1.025974025974026) internal successors, (79), 77 states have internal predecessors, (79), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-18 20:34:48,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2023-12-18 20:34:48,203 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 102 [2023-12-18 20:34:48,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:34:48,203 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2023-12-18 20:34:48,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 45 states have internal predecessors, (100), 19 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (21), 21 states have call predecessors, (21), 19 states have call successors, (21) [2023-12-18 20:34:48,204 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2023-12-18 20:34:48,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-18 20:34:48,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:34:48,204 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:34:48,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-18 20:34:48,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:34:48,410 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:34:48,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:34:48,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1598859825, now seen corresponding path program 22 times [2023-12-18 20:34:48,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:34:48,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492036485] [2023-12-18 20:34:48,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:34:48,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:34:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:34:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:48,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:34:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:48,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:34:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:48,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:34:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:34:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:48,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:34:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:48,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:34:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:49,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:34:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:49,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:34:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:49,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:34:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:49,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:34:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 30 proven. 241 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-12-18 20:34:49,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:34:49,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492036485] [2023-12-18 20:34:49,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492036485] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:34:49,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473707511] [2023-12-18 20:34:49,014 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 20:34:49,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:34:49,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:34:49,016 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:34:49,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-18 20:34:49,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 20:34:49,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:34:49,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-18 20:34:49,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:34:49,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:34:50,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:34:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 45 proven. 244 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-18 20:34:50,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:34:50,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:34:50,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:34:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 30 proven. 241 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-12-18 20:34:50,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473707511] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:34:50,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:34:50,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 26] total 51 [2023-12-18 20:34:50,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282646816] [2023-12-18 20:34:50,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:34:50,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-18 20:34:50,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:34:50,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-18 20:34:50,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2354, Unknown=0, NotChecked=0, Total=2550 [2023-12-18 20:34:50,462 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand has 51 states, 50 states have (on average 2.2) internal successors, (110), 47 states have internal predecessors, (110), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2023-12-18 20:34:51,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:34:51,983 INFO L93 Difference]: Finished difference Result 144 states and 150 transitions. [2023-12-18 20:34:51,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-18 20:34:51,984 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.2) internal successors, (110), 47 states have internal predecessors, (110), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) Word has length 105 [2023-12-18 20:34:51,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:34:51,985 INFO L225 Difference]: With dead ends: 144 [2023-12-18 20:34:51,985 INFO L226 Difference]: Without dead ends: 142 [2023-12-18 20:34:51,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 197 SyntacticMatches, 10 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1866 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=569, Invalid=6073, Unknown=0, NotChecked=0, Total=6642 [2023-12-18 20:34:51,986 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 144 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 20:34:51,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 753 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1885 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 20:34:51,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-18 20:34:52,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 105. [2023-12-18 20:34:52,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-18 20:34:52,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2023-12-18 20:34:52,006 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 105 [2023-12-18 20:34:52,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:34:52,007 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2023-12-18 20:34:52,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.2) internal successors, (110), 47 states have internal predecessors, (110), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2023-12-18 20:34:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2023-12-18 20:34:52,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-18 20:34:52,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:34:52,008 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:34:52,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-18 20:34:52,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-18 20:34:52,213 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:34:52,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:34:52,213 INFO L85 PathProgramCache]: Analyzing trace with hash 451334740, now seen corresponding path program 23 times [2023-12-18 20:34:52,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:34:52,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767393000] [2023-12-18 20:34:52,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:34:52,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:34:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:52,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:34:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:34:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:52,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:34:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:52,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:34:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:52,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:34:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:52,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:34:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:52,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:34:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:52,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:34:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:52,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:34:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:52,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:34:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:52,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:34:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:52,525 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 101 proven. 142 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-18 20:34:52,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:34:52,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767393000] [2023-12-18 20:34:52,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767393000] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:34:52,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066455241] [2023-12-18 20:34:52,525 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 20:34:52,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:34:52,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:34:52,528 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:34:52,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-18 20:34:52,660 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-12-18 20:34:52,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:34:52,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-18 20:34:52,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:34:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 126 proven. 117 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-18 20:34:52,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:34:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 126 proven. 117 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-18 20:34:53,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066455241] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:34:53,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:34:53,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2023-12-18 20:34:53,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372341820] [2023-12-18 20:34:53,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:34:53,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-18 20:34:53,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:34:53,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-18 20:34:53,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2023-12-18 20:34:53,186 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand has 35 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 35 states have internal predecessors, (92), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-12-18 20:34:53,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:34:53,424 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2023-12-18 20:34:53,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-18 20:34:53,425 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 35 states have internal predecessors, (92), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 108 [2023-12-18 20:34:53,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:34:53,429 INFO L225 Difference]: With dead ends: 148 [2023-12-18 20:34:53,429 INFO L226 Difference]: Without dead ends: 114 [2023-12-18 20:34:53,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 207 SyntacticMatches, 19 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=486, Invalid=1494, Unknown=0, NotChecked=0, Total=1980 [2023-12-18 20:34:53,430 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 86 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 20:34:53,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 162 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 20:34:53,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-18 20:34:53,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 101. [2023-12-18 20:34:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-18 20:34:53,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2023-12-18 20:34:53,448 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 108 [2023-12-18 20:34:53,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:34:53,448 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2023-12-18 20:34:53,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 35 states have internal predecessors, (92), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-12-18 20:34:53,449 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2023-12-18 20:34:53,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-18 20:34:53,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:34:53,449 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:34:53,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-18 20:34:53,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-18 20:34:53,655 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:34:53,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:34:53,656 INFO L85 PathProgramCache]: Analyzing trace with hash 617780594, now seen corresponding path program 24 times [2023-12-18 20:34:53,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:34:53,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84061265] [2023-12-18 20:34:53,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:34:53,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:34:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:54,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:34:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:54,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:34:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:54,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:34:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:54,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:34:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:54,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:34:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:54,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:34:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:54,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:34:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:54,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:34:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:54,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:34:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:54,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:34:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:54,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:34:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:54,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:34:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:34:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 30 proven. 275 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-18 20:34:54,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:34:54,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84061265] [2023-12-18 20:34:54,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84061265] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:34:54,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189811038] [2023-12-18 20:34:54,391 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 20:34:54,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:34:54,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:34:54,396 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:34:54,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-18 20:34:54,584 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2023-12-18 20:34:54,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:34:54,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-18 20:34:54,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:34:55,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:34:55,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:34:55,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14 [2023-12-18 20:34:55,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:34:55,774 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 59 proven. 302 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-18 20:34:55,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:35:20,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189811038] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:35:20,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:35:20,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29] total 53 [2023-12-18 20:35:20,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575973052] [2023-12-18 20:35:20,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:35:20,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-18 20:35:20,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:35:20,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-18 20:35:20,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2710, Unknown=6, NotChecked=0, Total=2970 [2023-12-18 20:35:20,188 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 53 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 49 states have internal predecessors, (111), 22 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (24), 23 states have call predecessors, (24), 22 states have call successors, (24) [2023-12-18 20:35:21,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:35:21,600 INFO L93 Difference]: Finished difference Result 116 states and 119 transitions. [2023-12-18 20:35:21,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-18 20:35:21,600 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 49 states have internal predecessors, (111), 22 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (24), 23 states have call predecessors, (24), 22 states have call successors, (24) Word has length 112 [2023-12-18 20:35:21,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:35:21,601 INFO L225 Difference]: With dead ends: 116 [2023-12-18 20:35:21,601 INFO L226 Difference]: Without dead ends: 114 [2023-12-18 20:35:21,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 131 SyntacticMatches, 10 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1879 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=652, Invalid=5662, Unknown=6, NotChecked=0, Total=6320 [2023-12-18 20:35:21,602 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 127 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 1866 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 20:35:21,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 651 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1866 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 20:35:21,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-18 20:35:21,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2023-12-18 20:35:21,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 85 states have internal predecessors, (87), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-18 20:35:21,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2023-12-18 20:35:21,622 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 112 [2023-12-18 20:35:21,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:35:21,622 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 111 transitions. [2023-12-18 20:35:21,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 49 states have internal predecessors, (111), 22 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (24), 23 states have call predecessors, (24), 22 states have call successors, (24) [2023-12-18 20:35:21,622 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 111 transitions. [2023-12-18 20:35:21,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-18 20:35:21,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:35:21,623 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:35:21,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-18 20:35:21,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-18 20:35:21,823 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:35:21,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:35:21,824 INFO L85 PathProgramCache]: Analyzing trace with hash 372413299, now seen corresponding path program 25 times [2023-12-18 20:35:21,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:35:21,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059837937] [2023-12-18 20:35:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:35:21,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:35:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:22,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:35:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:22,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:35:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:22,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:35:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:22,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:35:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:22,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:35:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:22,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:35:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:22,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:35:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:22,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:35:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:22,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:35:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:22,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:35:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:22,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:35:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:22,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:35:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:22,617 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 33 proven. 298 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-18 20:35:22,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:35:22,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059837937] [2023-12-18 20:35:22,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059837937] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:35:22,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285494667] [2023-12-18 20:35:22,617 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 20:35:22,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:35:22,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:35:22,618 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:35:22,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-18 20:35:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:22,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-18 20:35:22,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:35:23,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:35:23,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:35:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 45 proven. 307 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-12-18 20:35:23,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:35:24,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:35:24,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:35:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 33 proven. 298 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-18 20:35:24,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285494667] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:35:24,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:35:24,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 28] total 57 [2023-12-18 20:35:24,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352088940] [2023-12-18 20:35:24,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:35:24,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-18 20:35:24,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:35:24,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-18 20:35:24,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2970, Unknown=0, NotChecked=0, Total=3192 [2023-12-18 20:35:24,303 INFO L87 Difference]: Start difference. First operand 108 states and 111 transitions. Second operand has 57 states, 55 states have (on average 2.2181818181818183) internal successors, (122), 52 states have internal predecessors, (122), 23 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 23 states have call successors, (24) [2023-12-18 20:35:26,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:35:26,006 INFO L93 Difference]: Finished difference Result 157 states and 163 transitions. [2023-12-18 20:35:26,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-18 20:35:26,006 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 55 states have (on average 2.2181818181818183) internal successors, (122), 52 states have internal predecessors, (122), 23 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 23 states have call successors, (24) Word has length 115 [2023-12-18 20:35:26,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:35:26,007 INFO L225 Difference]: With dead ends: 157 [2023-12-18 20:35:26,007 INFO L226 Difference]: Without dead ends: 155 [2023-12-18 20:35:26,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 215 SyntacticMatches, 11 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2347 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=636, Invalid=7554, Unknown=0, NotChecked=0, Total=8190 [2023-12-18 20:35:26,014 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 190 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 2030 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 20:35:26,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 827 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2030 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 20:35:26,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-18 20:35:26,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 115. [2023-12-18 20:35:26,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 91 states have (on average 1.032967032967033) internal successors, (94), 91 states have internal predecessors, (94), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-18 20:35:26,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2023-12-18 20:35:26,042 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 115 [2023-12-18 20:35:26,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:35:26,042 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2023-12-18 20:35:26,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 55 states have (on average 2.2181818181818183) internal successors, (122), 52 states have internal predecessors, (122), 23 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 23 states have call successors, (24) [2023-12-18 20:35:26,042 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2023-12-18 20:35:26,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-18 20:35:26,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:35:26,043 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:35:26,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-18 20:35:26,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-18 20:35:26,246 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:35:26,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:35:26,246 INFO L85 PathProgramCache]: Analyzing trace with hash 669665746, now seen corresponding path program 26 times [2023-12-18 20:35:26,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:35:26,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271403215] [2023-12-18 20:35:26,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:35:26,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:35:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:26,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:35:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:26,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:35:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:26,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:35:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:26,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:35:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:26,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:35:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:26,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:35:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:26,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:35:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:26,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:35:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:26,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:35:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:26,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:35:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:26,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:35:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:26,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:35:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 127 proven. 173 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-18 20:35:26,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:35:26,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271403215] [2023-12-18 20:35:26,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271403215] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:35:26,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718065852] [2023-12-18 20:35:26,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 20:35:26,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:35:26,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:35:26,600 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:35:26,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-18 20:35:26,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 20:35:26,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:35:26,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-18 20:35:26,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:35:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 155 proven. 145 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-18 20:35:27,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:35:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 155 proven. 145 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-18 20:35:27,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718065852] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:35:27,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:35:27,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2023-12-18 20:35:27,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489611252] [2023-12-18 20:35:27,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:35:27,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-18 20:35:27,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:35:27,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-18 20:35:27,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2023-12-18 20:35:27,264 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand has 38 states, 38 states have (on average 2.6315789473684212) internal successors, (100), 38 states have internal predecessors, (100), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-12-18 20:35:27,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:35:27,554 INFO L93 Difference]: Finished difference Result 161 states and 167 transitions. [2023-12-18 20:35:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-18 20:35:27,555 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6315789473684212) internal successors, (100), 38 states have internal predecessors, (100), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) Word has length 118 [2023-12-18 20:35:27,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:35:27,556 INFO L225 Difference]: With dead ends: 161 [2023-12-18 20:35:27,556 INFO L226 Difference]: Without dead ends: 124 [2023-12-18 20:35:27,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 226 SyntacticMatches, 21 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=572, Invalid=1780, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 20:35:27,557 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 90 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 20:35:27,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 168 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 20:35:27,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-18 20:35:27,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 111. [2023-12-18 20:35:27,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-18 20:35:27,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2023-12-18 20:35:27,580 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 118 [2023-12-18 20:35:27,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:35:27,580 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2023-12-18 20:35:27,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6315789473684212) internal successors, (100), 38 states have internal predecessors, (100), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-12-18 20:35:27,580 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2023-12-18 20:35:27,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 20:35:27,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:35:27,581 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:35:27,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-18 20:35:27,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:35:27,782 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:35:27,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:35:27,782 INFO L85 PathProgramCache]: Analyzing trace with hash 933241204, now seen corresponding path program 27 times [2023-12-18 20:35:27,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:35:27,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909665714] [2023-12-18 20:35:27,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:35:27,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:35:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:28,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:35:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:28,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:35:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:28,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:35:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:28,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:35:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:28,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:35:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:28,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:35:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:28,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:35:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:35:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:28,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:35:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:28,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:35:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:28,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:35:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:28,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:35:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:28,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:35:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 33 proven. 335 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-12-18 20:35:28,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:35:28,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909665714] [2023-12-18 20:35:28,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909665714] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:35:28,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809684227] [2023-12-18 20:35:28,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 20:35:28,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:35:28,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:35:28,685 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:35:28,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-18 20:35:29,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-12-18 20:35:29,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:35:29,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-18 20:35:29,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:35:29,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:35:29,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:35:29,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14 [2023-12-18 20:35:30,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:35:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 75 proven. 335 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-18 20:35:30,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:35:38,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809684227] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:35:38,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:35:38,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31] total 57 [2023-12-18 20:35:38,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119077218] [2023-12-18 20:35:38,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:35:38,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-18 20:35:38,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:35:38,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-18 20:35:38,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=3145, Unknown=2, NotChecked=0, Total=3422 [2023-12-18 20:35:38,917 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand has 57 states, 56 states have (on average 2.1607142857142856) internal successors, (121), 53 states have internal predecessors, (121), 24 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) [2023-12-18 20:35:40,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:35:40,467 INFO L93 Difference]: Finished difference Result 126 states and 129 transitions. [2023-12-18 20:35:40,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-18 20:35:40,468 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 2.1607142857142856) internal successors, (121), 53 states have internal predecessors, (121), 24 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) Word has length 122 [2023-12-18 20:35:40,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:35:40,469 INFO L225 Difference]: With dead ends: 126 [2023-12-18 20:35:40,469 INFO L226 Difference]: Without dead ends: 124 [2023-12-18 20:35:40,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 143 SyntacticMatches, 11 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2204 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=711, Invalid=6597, Unknown=2, NotChecked=0, Total=7310 [2023-12-18 20:35:40,470 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 124 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 2033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 20:35:40,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 830 Invalid, 2033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 20:35:40,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-18 20:35:40,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 118. [2023-12-18 20:35:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-18 20:35:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 121 transitions. [2023-12-18 20:35:40,502 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 121 transitions. Word has length 122 [2023-12-18 20:35:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:35:40,502 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 121 transitions. [2023-12-18 20:35:40,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 2.1607142857142856) internal successors, (121), 53 states have internal predecessors, (121), 24 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) [2023-12-18 20:35:40,502 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 121 transitions. [2023-12-18 20:35:40,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-18 20:35:40,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:35:40,503 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:35:40,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-18 20:35:40,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:35:40,710 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:35:40,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:35:40,711 INFO L85 PathProgramCache]: Analyzing trace with hash 871002161, now seen corresponding path program 28 times [2023-12-18 20:35:40,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:35:40,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715923644] [2023-12-18 20:35:40,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:35:40,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:35:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:41,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:35:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:41,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:35:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:41,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:35:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:41,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:35:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:41,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:35:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:41,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:35:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:41,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:35:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:41,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:35:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:41,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:35:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:41,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:35:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:41,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:35:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:41,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:35:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:41,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:35:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 36 proven. 361 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-12-18 20:35:41,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:35:41,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715923644] [2023-12-18 20:35:41,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715923644] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:35:41,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003979247] [2023-12-18 20:35:41,572 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 20:35:41,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:35:41,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:35:41,573 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:35:41,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-18 20:35:41,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 20:35:41,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:35:41,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-18 20:35:41,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:35:42,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:35:43,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:35:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 48 proven. 373 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-12-18 20:35:43,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:35:43,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:35:43,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:35:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 36 proven. 361 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-12-18 20:35:43,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003979247] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:35:43,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:35:43,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31, 30] total 59 [2023-12-18 20:35:43,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542523853] [2023-12-18 20:35:43,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:35:43,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-18 20:35:43,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:35:43,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-18 20:35:43,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=3192, Unknown=0, NotChecked=0, Total=3422 [2023-12-18 20:35:43,486 INFO L87 Difference]: Start difference. First operand 118 states and 121 transitions. Second operand has 59 states, 58 states have (on average 2.2413793103448274) internal successors, (130), 55 states have internal predecessors, (130), 24 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) [2023-12-18 20:35:45,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:35:45,476 INFO L93 Difference]: Finished difference Result 170 states and 176 transitions. [2023-12-18 20:35:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-18 20:35:45,476 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.2413793103448274) internal successors, (130), 55 states have internal predecessors, (130), 24 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) Word has length 125 [2023-12-18 20:35:45,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:35:45,477 INFO L225 Difference]: With dead ends: 170 [2023-12-18 20:35:45,477 INFO L226 Difference]: Without dead ends: 168 [2023-12-18 20:35:45,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 235 SyntacticMatches, 12 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2657 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=679, Invalid=8441, Unknown=0, NotChecked=0, Total=9120 [2023-12-18 20:35:45,479 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 187 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 2665 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 2730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-18 20:35:45,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1018 Invalid, 2730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2665 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-18 20:35:45,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-18 20:35:45,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 125. [2023-12-18 20:35:45,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 states have internal predecessors, (102), 14 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-18 20:35:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2023-12-18 20:35:45,517 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 125 [2023-12-18 20:35:45,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:35:45,517 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2023-12-18 20:35:45,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.2413793103448274) internal successors, (130), 55 states have internal predecessors, (130), 24 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) [2023-12-18 20:35:45,517 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2023-12-18 20:35:45,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-18 20:35:45,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:35:45,518 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:35:45,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-18 20:35:45,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-18 20:35:45,728 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:35:45,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:35:45,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2133544020, now seen corresponding path program 29 times [2023-12-18 20:35:45,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:35:45,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864391654] [2023-12-18 20:35:45,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:35:45,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:35:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:46,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:35:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:46,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:35:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:46,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:35:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:46,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:35:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:46,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:35:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:46,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:35:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:46,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:35:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:46,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:35:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:46,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:35:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:46,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:35:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:46,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:35:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:46,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:35:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:46,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:35:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:46,219 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 156 proven. 207 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-18 20:35:46,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:35:46,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864391654] [2023-12-18 20:35:46,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864391654] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:35:46,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238914329] [2023-12-18 20:35:46,220 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 20:35:46,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:35:46,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:35:46,222 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:35:46,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-18 20:35:46,426 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-12-18 20:35:46,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:35:46,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-18 20:35:46,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:35:46,798 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 187 proven. 176 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-18 20:35:46,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:35:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 187 proven. 176 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-18 20:35:47,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238914329] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:35:47,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:35:47,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2023-12-18 20:35:47,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251003892] [2023-12-18 20:35:47,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:35:47,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-18 20:35:47,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:35:47,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-18 20:35:47,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1245, Unknown=0, NotChecked=0, Total=1640 [2023-12-18 20:35:47,093 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand has 41 states, 41 states have (on average 2.6341463414634148) internal successors, (108), 41 states have internal predecessors, (108), 13 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2023-12-18 20:35:47,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:35:47,365 INFO L93 Difference]: Finished difference Result 174 states and 180 transitions. [2023-12-18 20:35:47,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-18 20:35:47,366 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.6341463414634148) internal successors, (108), 41 states have internal predecessors, (108), 13 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 128 [2023-12-18 20:35:47,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:35:47,366 INFO L225 Difference]: With dead ends: 174 [2023-12-18 20:35:47,367 INFO L226 Difference]: Without dead ends: 134 [2023-12-18 20:35:47,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 245 SyntacticMatches, 23 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=665, Invalid=2091, Unknown=0, NotChecked=0, Total=2756 [2023-12-18 20:35:47,367 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 90 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 20:35:47,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 218 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 20:35:47,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-18 20:35:47,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 121. [2023-12-18 20:35:47,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 14 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-18 20:35:47,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2023-12-18 20:35:47,393 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 128 [2023-12-18 20:35:47,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:35:47,393 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2023-12-18 20:35:47,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.6341463414634148) internal successors, (108), 41 states have internal predecessors, (108), 13 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2023-12-18 20:35:47,393 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2023-12-18 20:35:47,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 20:35:47,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:35:47,394 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:35:47,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-18 20:35:47,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:35:47,601 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:35:47,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:35:47,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1591529230, now seen corresponding path program 30 times [2023-12-18 20:35:47,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:35:47,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185222630] [2023-12-18 20:35:47,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:35:47,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:35:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:48,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:35:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:48,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:35:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:48,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:35:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:48,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:35:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:48,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:35:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:48,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:35:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:48,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:35:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:48,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:35:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:48,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:35:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:48,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:35:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:48,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:35:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:48,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:35:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:48,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:35:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:48,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:35:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:35:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 36 proven. 401 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-18 20:35:48,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:35:48,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185222630] [2023-12-18 20:35:48,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185222630] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:35:48,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535861471] [2023-12-18 20:35:48,561 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 20:35:48,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:35:48,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:35:48,563 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:35:48,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-18 20:35:49,073 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-12-18 20:35:49,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:35:49,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-18 20:35:49,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:35:49,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:35:49,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:35:49,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14 [2023-12-18 20:35:50,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:35:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 85 proven. 422 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-12-18 20:35:50,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:36:27,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535861471] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:36:27,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:36:27,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33] total 61 [2023-12-18 20:36:27,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99126426] [2023-12-18 20:36:27,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:36:27,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-18 20:36:27,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:36:27,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-18 20:36:27,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=3601, Unknown=9, NotChecked=0, Total=3906 [2023-12-18 20:36:27,045 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand has 61 states, 60 states have (on average 2.183333333333333) internal successors, (131), 57 states have internal predecessors, (131), 26 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 26 states have call successors, (27) [2023-12-18 20:36:28,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:36:28,786 INFO L93 Difference]: Finished difference Result 136 states and 139 transitions. [2023-12-18 20:36:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-18 20:36:28,786 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 2.183333333333333) internal successors, (131), 57 states have internal predecessors, (131), 26 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 26 states have call successors, (27) Word has length 132 [2023-12-18 20:36:28,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:36:28,786 INFO L225 Difference]: With dead ends: 136 [2023-12-18 20:36:28,787 INFO L226 Difference]: Without dead ends: 134 [2023-12-18 20:36:28,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 155 SyntacticMatches, 12 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 38.6s TimeCoverageRelationStatistics Valid=770, Invalid=7593, Unknown=9, NotChecked=0, Total=8372 [2023-12-18 20:36:28,788 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 111 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 2417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-18 20:36:28,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 958 Invalid, 2417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-18 20:36:28,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-18 20:36:28,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 128. [2023-12-18 20:36:28,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 101 states have internal predecessors, (103), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-18 20:36:28,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 131 transitions. [2023-12-18 20:36:28,825 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 131 transitions. Word has length 132 [2023-12-18 20:36:28,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:36:28,826 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 131 transitions. [2023-12-18 20:36:28,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 2.183333333333333) internal successors, (131), 57 states have internal predecessors, (131), 26 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 26 states have call successors, (27) [2023-12-18 20:36:28,826 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 131 transitions. [2023-12-18 20:36:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-18 20:36:28,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:36:28,827 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:36:28,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-18 20:36:29,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:36:29,028 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:36:29,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:36:29,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1097709581, now seen corresponding path program 31 times [2023-12-18 20:36:29,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:36:29,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885662443] [2023-12-18 20:36:29,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:36:29,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:36:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:30,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:36:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:30,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:36:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:30,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:36:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:30,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:36:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:30,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:36:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:30,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:36:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:30,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:36:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:30,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:36:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:30,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:36:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:30,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:36:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:30,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:36:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:30,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:36:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:30,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:36:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:36:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:30,189 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 39 proven. 430 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-18 20:36:30,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:36:30,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885662443] [2023-12-18 20:36:30,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885662443] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:36:30,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745372863] [2023-12-18 20:36:30,190 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 20:36:30,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:36:30,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:36:30,192 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:36:30,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-18 20:36:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:30,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-18 20:36:30,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:36:30,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:36:31,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:36:31,689 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 45 proven. 451 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-18 20:36:31,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:36:32,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:36:32,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:36:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 39 proven. 430 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-18 20:36:32,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745372863] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:36:32,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:36:32,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 32] total 89 [2023-12-18 20:36:32,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657210287] [2023-12-18 20:36:32,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:36:32,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-12-18 20:36:32,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:36:32,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-12-18 20:36:32,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=7381, Unknown=0, NotChecked=0, Total=7832 [2023-12-18 20:36:32,865 INFO L87 Difference]: Start difference. First operand 128 states and 131 transitions. Second operand has 89 states, 88 states have (on average 2.2386363636363638) internal successors, (197), 83 states have internal predecessors, (197), 38 states have call successors, (39), 1 states have call predecessors, (39), 2 states have return successors, (40), 40 states have call predecessors, (40), 38 states have call successors, (40) [2023-12-18 20:36:35,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:36:35,690 INFO L93 Difference]: Finished difference Result 183 states and 189 transitions. [2023-12-18 20:36:35,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-18 20:36:35,690 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 2.2386363636363638) internal successors, (197), 83 states have internal predecessors, (197), 38 states have call successors, (39), 1 states have call predecessors, (39), 2 states have return successors, (40), 40 states have call predecessors, (40), 38 states have call successors, (40) Word has length 135 [2023-12-18 20:36:35,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:36:35,691 INFO L225 Difference]: With dead ends: 183 [2023-12-18 20:36:35,691 INFO L226 Difference]: Without dead ends: 181 [2023-12-18 20:36:35,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4818 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1061, Invalid=15451, Unknown=0, NotChecked=0, Total=16512 [2023-12-18 20:36:35,693 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 260 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 3668 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 3737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-18 20:36:35,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1240 Invalid, 3737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3668 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-18 20:36:35,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-18 20:36:35,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 135. [2023-12-18 20:36:35,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 107 states have (on average 1.02803738317757) internal successors, (110), 107 states have internal predecessors, (110), 15 states have call successors, (15), 12 states have call predecessors, (15), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-18 20:36:35,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 140 transitions. [2023-12-18 20:36:35,729 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 140 transitions. Word has length 135 [2023-12-18 20:36:35,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:36:35,729 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 140 transitions. [2023-12-18 20:36:35,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 2.2386363636363638) internal successors, (197), 83 states have internal predecessors, (197), 38 states have call successors, (39), 1 states have call predecessors, (39), 2 states have return successors, (40), 40 states have call predecessors, (40), 38 states have call successors, (40) [2023-12-18 20:36:35,730 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 140 transitions. [2023-12-18 20:36:35,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-18 20:36:35,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:36:35,730 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:36:35,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-18 20:36:35,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-18 20:36:35,931 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:36:35,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:36:35,931 INFO L85 PathProgramCache]: Analyzing trace with hash 20464978, now seen corresponding path program 32 times [2023-12-18 20:36:35,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:36:35,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287342823] [2023-12-18 20:36:35,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:36:35,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:36:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:36,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:36:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:36:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:36:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:36,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:36:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:36,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:36:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:36,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:36:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:36,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:36:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:36:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:36,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:36:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:36:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:36,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:36:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:36,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:36:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:36,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:36:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:36,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:36:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 188 proven. 244 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-18 20:36:36,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:36:36,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287342823] [2023-12-18 20:36:36,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287342823] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:36:36,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740096872] [2023-12-18 20:36:36,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 20:36:36,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:36:36,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:36:36,445 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:36:36,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-18 20:36:36,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 20:36:36,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:36:36,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-18 20:36:36,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:36:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 222 proven. 210 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-18 20:36:37,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:36:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 222 proven. 210 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-18 20:36:37,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740096872] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:36:37,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:36:37,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2023-12-18 20:36:37,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641390096] [2023-12-18 20:36:37,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:36:37,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-18 20:36:37,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:36:37,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-18 20:36:37,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2023-12-18 20:36:37,347 INFO L87 Difference]: Start difference. First operand 135 states and 140 transitions. Second operand has 44 states, 44 states have (on average 2.6363636363636362) internal successors, (116), 44 states have internal predecessors, (116), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2023-12-18 20:36:37,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:36:37,636 INFO L93 Difference]: Finished difference Result 187 states and 193 transitions. [2023-12-18 20:36:37,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-18 20:36:37,637 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.6363636363636362) internal successors, (116), 44 states have internal predecessors, (116), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 138 [2023-12-18 20:36:37,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:36:37,637 INFO L225 Difference]: With dead ends: 187 [2023-12-18 20:36:37,637 INFO L226 Difference]: Without dead ends: 144 [2023-12-18 20:36:37,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 264 SyntacticMatches, 25 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=765, Invalid=2427, Unknown=0, NotChecked=0, Total=3192 [2023-12-18 20:36:37,638 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 114 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 20:36:37,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 200 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 20:36:37,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-18 20:36:37,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 131. [2023-12-18 20:36:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 15 states have call successors, (15), 12 states have call predecessors, (15), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-18 20:36:37,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2023-12-18 20:36:37,673 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 138 [2023-12-18 20:36:37,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:36:37,673 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2023-12-18 20:36:37,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.6363636363636362) internal successors, (116), 44 states have internal predecessors, (116), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2023-12-18 20:36:37,673 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2023-12-18 20:36:37,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 20:36:37,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:36:37,674 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:36:37,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-18 20:36:37,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-18 20:36:37,878 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:36:37,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:36:37,878 INFO L85 PathProgramCache]: Analyzing trace with hash -867841164, now seen corresponding path program 33 times [2023-12-18 20:36:37,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:36:37,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429432470] [2023-12-18 20:36:37,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:36:37,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:36:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:39,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:36:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:39,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:36:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:39,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:36:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:39,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:36:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:39,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:36:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:39,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:36:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:39,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:36:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:39,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:36:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:39,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:36:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:39,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:36:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:39,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:36:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:39,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:36:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:39,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:36:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:39,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:36:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:39,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:36:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:39,182 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 39 proven. 473 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-12-18 20:36:39,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:36:39,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429432470] [2023-12-18 20:36:39,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429432470] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:36:39,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474133220] [2023-12-18 20:36:39,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 20:36:39,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:36:39,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:36:39,184 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:36:39,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-18 20:36:39,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-12-18 20:36:39,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:36:39,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-18 20:36:39,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:36:39,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:36:40,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:36:40,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14 [2023-12-18 20:36:40,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:36:40,876 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 89 proven. 473 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-18 20:36:40,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:36:45,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474133220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:36:45,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:36:45,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 52 [2023-12-18 20:36:45,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947452364] [2023-12-18 20:36:45,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:36:45,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-18 20:36:45,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:36:45,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-18 20:36:45,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=3950, Unknown=1, NotChecked=0, Total=4290 [2023-12-18 20:36:45,449 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 49 states have internal predecessors, (116), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2023-12-18 20:36:47,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:36:47,177 INFO L93 Difference]: Finished difference Result 146 states and 149 transitions. [2023-12-18 20:36:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-18 20:36:47,177 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 49 states have internal predecessors, (116), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) Word has length 142 [2023-12-18 20:36:47,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:36:47,180 INFO L225 Difference]: With dead ends: 146 [2023-12-18 20:36:47,181 INFO L226 Difference]: Without dead ends: 144 [2023-12-18 20:36:47,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2561 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=849, Invalid=8462, Unknown=1, NotChecked=0, Total=9312 [2023-12-18 20:36:47,182 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 140 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 20:36:47,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 557 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 20:36:47,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-18 20:36:47,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2023-12-18 20:36:47,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 109 states have (on average 1.018348623853211) internal successors, (111), 109 states have internal predecessors, (111), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-18 20:36:47,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 141 transitions. [2023-12-18 20:36:47,223 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 141 transitions. Word has length 142 [2023-12-18 20:36:47,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:36:47,223 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 141 transitions. [2023-12-18 20:36:47,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 49 states have internal predecessors, (116), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2023-12-18 20:36:47,223 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 141 transitions. [2023-12-18 20:36:47,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-18 20:36:47,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:36:47,224 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:36:47,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-18 20:36:47,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-18 20:36:47,429 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:36:47,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:36:47,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1852606001, now seen corresponding path program 34 times [2023-12-18 20:36:47,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:36:47,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579503254] [2023-12-18 20:36:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:36:47,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:36:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:48,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:36:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:48,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:36:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:48,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:36:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:48,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:36:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:48,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:36:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:48,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:36:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:48,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:36:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:48,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:36:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:48,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:36:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:48,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:36:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:48,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:36:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:48,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:36:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:48,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:36:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:48,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:36:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:48,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:36:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 42 proven. 505 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-12-18 20:36:48,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:36:48,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579503254] [2023-12-18 20:36:48,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579503254] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:36:48,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665254181] [2023-12-18 20:36:48,406 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 20:36:48,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:36:48,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:36:48,407 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:36:48,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-18 20:36:48,569 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 20:36:48,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:36:48,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-18 20:36:48,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:36:49,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:36:50,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:36:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 51 proven. 526 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-18 20:36:50,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:36:50,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:36:50,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:36:50,784 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 42 proven. 505 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-12-18 20:36:50,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665254181] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:36:50,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:36:50,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 35, 34] total 67 [2023-12-18 20:36:50,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479334932] [2023-12-18 20:36:50,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:36:50,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-18 20:36:50,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:36:50,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-18 20:36:50,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=4158, Unknown=0, NotChecked=0, Total=4422 [2023-12-18 20:36:50,786 INFO L87 Difference]: Start difference. First operand 138 states and 141 transitions. Second operand has 67 states, 66 states have (on average 2.272727272727273) internal successors, (150), 63 states have internal predecessors, (150), 28 states have call successors, (29), 1 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2023-12-18 20:36:53,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:36:53,175 INFO L93 Difference]: Finished difference Result 196 states and 202 transitions. [2023-12-18 20:36:53,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-18 20:36:53,175 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.272727272727273) internal successors, (150), 63 states have internal predecessors, (150), 28 states have call successors, (29), 1 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) Word has length 145 [2023-12-18 20:36:53,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:36:53,176 INFO L225 Difference]: With dead ends: 196 [2023-12-18 20:36:53,176 INFO L226 Difference]: Without dead ends: 194 [2023-12-18 20:36:53,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 273 SyntacticMatches, 14 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3588 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=789, Invalid=11201, Unknown=0, NotChecked=0, Total=11990 [2023-12-18 20:36:53,178 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 200 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 3092 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 3164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-18 20:36:53,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1102 Invalid, 3164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 3092 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-18 20:36:53,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-18 20:36:53,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 145. [2023-12-18 20:36:53,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 115 states have internal predecessors, (118), 16 states have call successors, (16), 13 states have call predecessors, (16), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-18 20:36:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 150 transitions. [2023-12-18 20:36:53,231 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 150 transitions. Word has length 145 [2023-12-18 20:36:53,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:36:53,231 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 150 transitions. [2023-12-18 20:36:53,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.272727272727273) internal successors, (150), 63 states have internal predecessors, (150), 28 states have call successors, (29), 1 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2023-12-18 20:36:53,231 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 150 transitions. [2023-12-18 20:36:53,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-18 20:36:53,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:36:53,232 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:36:53,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-18 20:36:53,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:36:53,434 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:36:53,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:36:53,434 INFO L85 PathProgramCache]: Analyzing trace with hash 661222996, now seen corresponding path program 35 times [2023-12-18 20:36:53,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:36:53,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497936362] [2023-12-18 20:36:53,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:36:53,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:36:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:53,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:36:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:53,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:36:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:53,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:36:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:53,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:36:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:53,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:36:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:53,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:36:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:53,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:36:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:53,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:36:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:53,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:36:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:53,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:36:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:53,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:36:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:53,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:36:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:53,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:36:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:53,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:36:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:36:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 223 proven. 284 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-18 20:36:53,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:36:53,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497936362] [2023-12-18 20:36:53,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497936362] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:36:53,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226518423] [2023-12-18 20:36:53,915 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 20:36:53,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:36:53,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:36:53,925 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:36:53,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-18 20:36:54,113 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-12-18 20:36:54,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:36:54,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-18 20:36:54,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:36:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 260 proven. 247 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-18 20:36:54,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:36:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 260 proven. 247 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-18 20:36:54,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226518423] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:36:54,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:36:54,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2023-12-18 20:36:54,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176776529] [2023-12-18 20:36:54,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:36:54,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-18 20:36:54,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:36:54,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-18 20:36:54,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1647, Unknown=0, NotChecked=0, Total=2162 [2023-12-18 20:36:54,977 INFO L87 Difference]: Start difference. First operand 145 states and 150 transitions. Second operand has 47 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 47 states have internal predecessors, (124), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-12-18 20:36:55,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:36:55,307 INFO L93 Difference]: Finished difference Result 200 states and 206 transitions. [2023-12-18 20:36:55,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-18 20:36:55,308 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 47 states have internal predecessors, (124), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 148 [2023-12-18 20:36:55,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:36:55,309 INFO L225 Difference]: With dead ends: 200 [2023-12-18 20:36:55,309 INFO L226 Difference]: Without dead ends: 154 [2023-12-18 20:36:55,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 283 SyntacticMatches, 27 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1668 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=872, Invalid=2788, Unknown=0, NotChecked=0, Total=3660 [2023-12-18 20:36:55,310 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 126 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 20:36:55,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 196 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 20:36:55,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-12-18 20:36:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2023-12-18 20:36:55,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 16 states have call successors, (16), 13 states have call predecessors, (16), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-18 20:36:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2023-12-18 20:36:55,347 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 148 [2023-12-18 20:36:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:36:55,347 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2023-12-18 20:36:55,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 47 states have internal predecessors, (124), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-12-18 20:36:55,348 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2023-12-18 20:36:55,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-18 20:36:55,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:36:55,348 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:36:55,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-18 20:36:55,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-18 20:36:55,549 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:36:55,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:36:55,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1192647794, now seen corresponding path program 36 times [2023-12-18 20:36:55,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:36:55,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938762560] [2023-12-18 20:36:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:36:55,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:36:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:36:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:36:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:36:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:36:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:36:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:36:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:36:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:36:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:36:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:36:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:36:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:36:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:36:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:36:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:36:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:36:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:36:56,693 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 42 proven. 551 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2023-12-18 20:36:56,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:36:56,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938762560] [2023-12-18 20:36:56,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938762560] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:36:56,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227979920] [2023-12-18 20:36:56,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 20:36:56,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:36:56,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:36:56,697 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:36:56,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-18 20:36:57,290 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2023-12-18 20:36:57,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:36:57,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-18 20:36:57,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:36:58,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:36:58,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-18 20:36:59,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:36:59,175 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 99 proven. 578 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-18 20:36:59,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:37:03,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227979920] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:37:03,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:37:03,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37] total 69 [2023-12-18 20:37:03,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609530440] [2023-12-18 20:37:03,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:37:03,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-18 20:37:03,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:37:03,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-18 20:37:03,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=4654, Unknown=1, NotChecked=0, Total=4970 [2023-12-18 20:37:03,621 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand has 69 states, 68 states have (on average 2.2205882352941178) internal successors, (151), 65 states have internal predecessors, (151), 30 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 31 states have call predecessors, (31), 30 states have call successors, (31) [2023-12-18 20:37:07,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:37:07,037 INFO L93 Difference]: Finished difference Result 215 states and 224 transitions. [2023-12-18 20:37:07,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-12-18 20:37:07,037 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 2.2205882352941178) internal successors, (151), 65 states have internal predecessors, (151), 30 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 31 states have call predecessors, (31), 30 states have call successors, (31) Word has length 152 [2023-12-18 20:37:07,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:37:07,038 INFO L225 Difference]: With dead ends: 215 [2023-12-18 20:37:07,038 INFO L226 Difference]: Without dead ends: 213 [2023-12-18 20:37:07,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 179 SyntacticMatches, 14 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5979 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1537, Invalid=16822, Unknown=1, NotChecked=0, Total=18360 [2023-12-18 20:37:07,040 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 399 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 3270 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 3414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 3270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-18 20:37:07,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 1393 Invalid, 3414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 3270 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-18 20:37:07,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-18 20:37:07,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 155. [2023-12-18 20:37:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 121 states have (on average 1.0330578512396693) internal successors, (125), 122 states have internal predecessors, (125), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-18 20:37:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 163 transitions. [2023-12-18 20:37:07,083 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 163 transitions. Word has length 152 [2023-12-18 20:37:07,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:37:07,083 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 163 transitions. [2023-12-18 20:37:07,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 2.2205882352941178) internal successors, (151), 65 states have internal predecessors, (151), 30 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 31 states have call predecessors, (31), 30 states have call successors, (31) [2023-12-18 20:37:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 163 transitions. [2023-12-18 20:37:07,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-18 20:37:07,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:37:07,085 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:37:07,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-18 20:37:07,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-18 20:37:07,292 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:37:07,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:37:07,292 INFO L85 PathProgramCache]: Analyzing trace with hash -2088407949, now seen corresponding path program 37 times [2023-12-18 20:37:07,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:37:07,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433152218] [2023-12-18 20:37:07,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:37:07,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:37:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:37:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:37:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:37:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:37:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:37:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:37:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:37:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:37:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:37:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:37:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:37:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:37:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:37:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:37:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:37:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:37:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 45 proven. 586 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2023-12-18 20:37:08,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:37:08,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433152218] [2023-12-18 20:37:08,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433152218] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:37:08,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744489666] [2023-12-18 20:37:08,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 20:37:08,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:37:08,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:37:08,308 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:37:08,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-18 20:37:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:08,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-18 20:37:08,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:37:09,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:37:10,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:37:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 63 proven. 601 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2023-12-18 20:37:10,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:37:10,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:37:10,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:37:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 45 proven. 586 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2023-12-18 20:37:10,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744489666] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:37:10,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:37:10,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37, 36] total 71 [2023-12-18 20:37:10,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601512356] [2023-12-18 20:37:10,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:37:10,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-12-18 20:37:10,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:37:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-12-18 20:37:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=4689, Unknown=0, NotChecked=0, Total=4970 [2023-12-18 20:37:10,870 INFO L87 Difference]: Start difference. First operand 155 states and 163 transitions. Second operand has 71 states, 70 states have (on average 2.2857142857142856) internal successors, (160), 67 states have internal predecessors, (160), 30 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (31), 31 states have call predecessors, (31), 30 states have call successors, (31) [2023-12-18 20:37:13,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:37:13,827 INFO L93 Difference]: Finished difference Result 211 states and 219 transitions. [2023-12-18 20:37:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-18 20:37:13,827 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 2.2857142857142856) internal successors, (160), 67 states have internal predecessors, (160), 30 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (31), 31 states have call predecessors, (31), 30 states have call successors, (31) Word has length 155 [2023-12-18 20:37:13,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:37:13,828 INFO L225 Difference]: With dead ends: 211 [2023-12-18 20:37:13,828 INFO L226 Difference]: Without dead ends: 209 [2023-12-18 20:37:13,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 292 SyntacticMatches, 15 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=844, Invalid=12728, Unknown=0, NotChecked=0, Total=13572 [2023-12-18 20:37:13,830 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 204 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 4090 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 4163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 4090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-18 20:37:13,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1354 Invalid, 4163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 4090 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-18 20:37:13,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-12-18 20:37:13,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 159. [2023-12-18 20:37:13,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 125 states have (on average 1.032) internal successors, (129), 126 states have internal predecessors, (129), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-18 20:37:13,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 167 transitions. [2023-12-18 20:37:13,878 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 167 transitions. Word has length 155 [2023-12-18 20:37:13,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:37:13,878 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 167 transitions. [2023-12-18 20:37:13,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 2.2857142857142856) internal successors, (160), 67 states have internal predecessors, (160), 30 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (31), 31 states have call predecessors, (31), 30 states have call successors, (31) [2023-12-18 20:37:13,878 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 167 transitions. [2023-12-18 20:37:13,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-18 20:37:13,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:37:13,879 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:37:13,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-18 20:37:14,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:37:14,080 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:37:14,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:37:14,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1140642002, now seen corresponding path program 38 times [2023-12-18 20:37:14,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:37:14,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064535988] [2023-12-18 20:37:14,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:37:14,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:37:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:37:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:37:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:37:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:37:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:37:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:37:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:37:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:37:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:37:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:37:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:37:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:37:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:37:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:37:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:37:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:37:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 261 proven. 327 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-18 20:37:14,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:37:14,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064535988] [2023-12-18 20:37:14,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064535988] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:37:14,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083732397] [2023-12-18 20:37:14,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 20:37:14,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:37:14,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:37:14,619 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:37:14,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-18 20:37:14,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 20:37:14,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:37:14,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-18 20:37:14,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:37:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 301 proven. 287 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-18 20:37:15,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:37:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 301 proven. 287 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-18 20:37:15,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083732397] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:37:15,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:37:15,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2023-12-18 20:37:15,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324033085] [2023-12-18 20:37:15,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:37:15,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-18 20:37:15,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:37:15,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-18 20:37:15,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2023-12-18 20:37:15,735 INFO L87 Difference]: Start difference. First operand 159 states and 167 transitions. Second operand has 50 states, 50 states have (on average 2.64) internal successors, (132), 50 states have internal predecessors, (132), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2023-12-18 20:37:16,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:37:16,237 INFO L93 Difference]: Finished difference Result 215 states and 223 transitions. [2023-12-18 20:37:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-18 20:37:16,238 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.64) internal successors, (132), 50 states have internal predecessors, (132), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) Word has length 158 [2023-12-18 20:37:16,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:37:16,240 INFO L225 Difference]: With dead ends: 215 [2023-12-18 20:37:16,240 INFO L226 Difference]: Without dead ends: 166 [2023-12-18 20:37:16,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 302 SyntacticMatches, 29 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1901 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=986, Invalid=3174, Unknown=0, NotChecked=0, Total=4160 [2023-12-18 20:37:16,244 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 180 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 20:37:16,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 176 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 20:37:16,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-18 20:37:16,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2023-12-18 20:37:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 121 states have (on average 1.024793388429752) internal successors, (124), 122 states have internal predecessors, (124), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-18 20:37:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 162 transitions. [2023-12-18 20:37:16,303 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 162 transitions. Word has length 158 [2023-12-18 20:37:16,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:37:16,304 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 162 transitions. [2023-12-18 20:37:16,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.64) internal successors, (132), 50 states have internal predecessors, (132), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2023-12-18 20:37:16,304 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 162 transitions. [2023-12-18 20:37:16,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-18 20:37:16,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:37:16,305 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:37:16,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-12-18 20:37:16,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-12-18 20:37:16,511 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:37:16,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:37:16,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1483548020, now seen corresponding path program 39 times [2023-12-18 20:37:16,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:37:16,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287005176] [2023-12-18 20:37:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:37:16,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:37:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:37:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:37:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:37:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:37:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:37:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:37:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:37:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:37:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:37:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:37:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:37:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:37:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:37:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:37:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:37:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:37:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:37:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 45 proven. 635 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-12-18 20:37:17,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:37:17,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287005176] [2023-12-18 20:37:17,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287005176] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:37:17,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851469234] [2023-12-18 20:37:17,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 20:37:17,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:37:17,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:37:17,759 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:37:17,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-18 20:37:18,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2023-12-18 20:37:18,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:37:18,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-18 20:37:18,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:37:19,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 20:37:19,369 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-12-18 20:37:19,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2023-12-18 20:37:20,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2023-12-18 20:37:20,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 103 proven. 635 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2023-12-18 20:37:20,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:37:40,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851469234] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:37:40,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:37:40,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 73 [2023-12-18 20:37:40,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292487735] [2023-12-18 20:37:40,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:37:40,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-18 20:37:40,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:37:40,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-18 20:37:40,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=5216, Unknown=4, NotChecked=0, Total=5550 [2023-12-18 20:37:40,815 INFO L87 Difference]: Start difference. First operand 155 states and 162 transitions. Second operand has 73 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 69 states have internal predecessors, (160), 31 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (33), 33 states have call predecessors, (33), 31 states have call successors, (33) [2023-12-18 20:37:43,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:37:43,401 INFO L93 Difference]: Finished difference Result 174 states and 179 transitions. [2023-12-18 20:37:43,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-18 20:37:43,401 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 69 states have internal predecessors, (160), 31 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (33), 33 states have call predecessors, (33), 31 states have call successors, (33) Word has length 162 [2023-12-18 20:37:43,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:37:43,402 INFO L225 Difference]: With dead ends: 174 [2023-12-18 20:37:43,402 INFO L226 Difference]: Without dead ends: 172 [2023-12-18 20:37:43,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 192 SyntacticMatches, 15 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3836 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=888, Invalid=11098, Unknown=4, NotChecked=0, Total=11990 [2023-12-18 20:37:43,403 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 150 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 3881 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 3923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-18 20:37:43,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1364 Invalid, 3923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3881 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-18 20:37:43,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-18 20:37:43,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 158. [2023-12-18 20:37:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 125 states have (on average 1.016) internal successors, (127), 125 states have internal predecessors, (127), 17 states have call successors, (17), 15 states have call predecessors, (17), 15 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-18 20:37:43,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 161 transitions. [2023-12-18 20:37:43,462 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 161 transitions. Word has length 162 [2023-12-18 20:37:43,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:37:43,464 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 161 transitions. [2023-12-18 20:37:43,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 69 states have internal predecessors, (160), 31 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (33), 33 states have call predecessors, (33), 31 states have call successors, (33) [2023-12-18 20:37:43,464 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 161 transitions. [2023-12-18 20:37:43,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-18 20:37:43,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:37:43,465 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:37:43,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-18 20:37:43,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:37:43,675 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:37:43,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:37:43,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1171188785, now seen corresponding path program 40 times [2023-12-18 20:37:43,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:37:43,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650162818] [2023-12-18 20:37:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:37:43,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:37:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:37:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:37:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:37:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:37:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:37:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:37:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:37:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:37:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:37:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:37:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:37:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:37:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:37:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:37:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:37:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:37:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:37:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:44,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 48 proven. 673 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-12-18 20:37:44,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:37:44,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650162818] [2023-12-18 20:37:44,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650162818] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:37:44,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378674453] [2023-12-18 20:37:44,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 20:37:44,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:37:44,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:37:44,838 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:37:44,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-18 20:37:45,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 20:37:45,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:37:45,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-18 20:37:45,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:37:46,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:37:46,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:37:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 57 proven. 700 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-12-18 20:37:47,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:37:47,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:37:47,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:37:48,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 48 proven. 673 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-12-18 20:37:48,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378674453] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:37:48,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:37:48,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 39, 38] total 92 [2023-12-18 20:37:48,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587210097] [2023-12-18 20:37:48,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:37:48,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2023-12-18 20:37:48,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:37:48,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2023-12-18 20:37:48,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=7955, Unknown=0, NotChecked=0, Total=8372 [2023-12-18 20:37:48,372 INFO L87 Difference]: Start difference. First operand 158 states and 161 transitions. Second operand has 92 states, 91 states have (on average 2.208791208791209) internal successors, (201), 86 states have internal predecessors, (201), 47 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (49), 49 states have call predecessors, (49), 47 states have call successors, (49) [2023-12-18 20:37:51,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:37:51,933 INFO L93 Difference]: Finished difference Result 222 states and 228 transitions. [2023-12-18 20:37:51,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-18 20:37:51,934 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 2.208791208791209) internal successors, (201), 86 states have internal predecessors, (201), 47 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (49), 49 states have call predecessors, (49), 47 states have call successors, (49) Word has length 165 [2023-12-18 20:37:51,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:37:51,935 INFO L225 Difference]: With dead ends: 222 [2023-12-18 20:37:51,935 INFO L226 Difference]: Without dead ends: 220 [2023-12-18 20:37:51,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 295 SyntacticMatches, 15 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5798 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1111, Invalid=18629, Unknown=0, NotChecked=0, Total=19740 [2023-12-18 20:37:51,937 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 467 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 4598 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 4695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 4598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-18 20:37:51,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1493 Invalid, 4695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 4598 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-18 20:37:51,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-18 20:37:52,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 165. [2023-12-18 20:37:52,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 131 states have (on average 1.0229007633587786) internal successors, (134), 131 states have internal predecessors, (134), 18 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-18 20:37:52,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 170 transitions. [2023-12-18 20:37:52,002 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 170 transitions. Word has length 165 [2023-12-18 20:37:52,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:37:52,003 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 170 transitions. [2023-12-18 20:37:52,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 2.208791208791209) internal successors, (201), 86 states have internal predecessors, (201), 47 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (49), 49 states have call predecessors, (49), 47 states have call successors, (49) [2023-12-18 20:37:52,003 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 170 transitions. [2023-12-18 20:37:52,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-18 20:37:52,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:37:52,004 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:37:52,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-12-18 20:37:52,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:37:52,211 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:37:52,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:37:52,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1423617964, now seen corresponding path program 41 times [2023-12-18 20:37:52,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:37:52,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781627460] [2023-12-18 20:37:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:37:52,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:37:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:37:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:37:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:37:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:37:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:37:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:37:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:37:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:37:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:37:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:37:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:37:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:37:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:37:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:37:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:37:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:37:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:37:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 302 proven. 373 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-18 20:37:52,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:37:52,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781627460] [2023-12-18 20:37:52,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781627460] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:37:52,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607582569] [2023-12-18 20:37:52,821 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 20:37:52,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:37:52,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:37:52,822 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:37:52,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-18 20:37:53,058 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2023-12-18 20:37:53,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:37:53,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-18 20:37:53,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:37:53,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 345 proven. 330 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-18 20:37:53,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:37:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 345 proven. 330 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-18 20:37:54,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607582569] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:37:54,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:37:54,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2023-12-18 20:37:54,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89918250] [2023-12-18 20:37:54,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:37:54,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-18 20:37:54,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:37:54,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-18 20:37:54,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=2105, Unknown=0, NotChecked=0, Total=2756 [2023-12-18 20:37:54,103 INFO L87 Difference]: Start difference. First operand 165 states and 170 transitions. Second operand has 53 states, 53 states have (on average 2.641509433962264) internal successors, (140), 53 states have internal predecessors, (140), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-12-18 20:37:54,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:37:54,540 INFO L93 Difference]: Finished difference Result 226 states and 232 transitions. [2023-12-18 20:37:54,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-18 20:37:54,541 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.641509433962264) internal successors, (140), 53 states have internal predecessors, (140), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 168 [2023-12-18 20:37:54,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:37:54,541 INFO L225 Difference]: With dead ends: 226 [2023-12-18 20:37:54,541 INFO L226 Difference]: Without dead ends: 174 [2023-12-18 20:37:54,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 321 SyntacticMatches, 31 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2149 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1107, Invalid=3585, Unknown=0, NotChecked=0, Total=4692 [2023-12-18 20:37:54,543 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 188 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 20:37:54,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 176 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 20:37:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-18 20:37:54,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 161. [2023-12-18 20:37:54,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 18 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-18 20:37:54,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 165 transitions. [2023-12-18 20:37:54,601 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 165 transitions. Word has length 168 [2023-12-18 20:37:54,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:37:54,602 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 165 transitions. [2023-12-18 20:37:54,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.641509433962264) internal successors, (140), 53 states have internal predecessors, (140), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-12-18 20:37:54,602 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 165 transitions. [2023-12-18 20:37:54,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 20:37:54,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:37:54,603 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:37:54,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-12-18 20:37:54,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-12-18 20:37:54,804 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:37:54,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:37:54,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1074272242, now seen corresponding path program 42 times [2023-12-18 20:37:54,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:37:54,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322529494] [2023-12-18 20:37:54,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:37:54,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:37:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:55,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:37:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:55,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:37:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:37:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:37:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:37:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:37:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:37:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:37:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:37:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:37:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:37:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:37:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:37:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:37:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:37:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:37:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:37:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:37:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:37:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 48 proven. 725 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2023-12-18 20:37:56,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:37:56,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322529494] [2023-12-18 20:37:56,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322529494] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:37:56,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320371301] [2023-12-18 20:37:56,031 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 20:37:56,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:37:56,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:37:56,032 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:37:56,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-18 20:37:56,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2023-12-18 20:37:56,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:37:56,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 87 conjunts are in the unsatisfiable core [2023-12-18 20:37:56,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:37:57,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 20:37:57,788 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-12-18 20:37:57,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2023-12-18 20:37:58,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2023-12-18 20:37:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 113 proven. 758 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-12-18 20:37:58,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:38:23,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320371301] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:38:23,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:38:23,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 77 [2023-12-18 20:38:23,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831240622] [2023-12-18 20:38:23,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:38:23,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-18 20:38:23,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:38:23,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-18 20:38:23,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=5807, Unknown=6, NotChecked=0, Total=6162 [2023-12-18 20:38:23,626 INFO L87 Difference]: Start difference. First operand 161 states and 165 transitions. Second operand has 77 states, 76 states have (on average 2.236842105263158) internal successors, (170), 73 states have internal predecessors, (170), 33 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (35), 35 states have call predecessors, (35), 33 states have call successors, (35) [2023-12-18 20:38:26,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:38:26,389 INFO L93 Difference]: Finished difference Result 176 states and 179 transitions. [2023-12-18 20:38:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-18 20:38:26,390 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 2.236842105263158) internal successors, (170), 73 states have internal predecessors, (170), 33 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (35), 35 states have call predecessors, (35), 33 states have call successors, (35) Word has length 172 [2023-12-18 20:38:26,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:38:26,390 INFO L225 Difference]: With dead ends: 176 [2023-12-18 20:38:26,390 INFO L226 Difference]: Without dead ends: 174 [2023-12-18 20:38:26,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 204 SyntacticMatches, 16 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4293 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=943, Invalid=12391, Unknown=6, NotChecked=0, Total=13340 [2023-12-18 20:38:26,392 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 176 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 4312 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 4352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 4312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-18 20:38:26,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 1479 Invalid, 4352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 4312 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-18 20:38:26,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-18 20:38:26,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 168. [2023-12-18 20:38:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 133 states have (on average 1.0150375939849625) internal successors, (135), 133 states have internal predecessors, (135), 18 states have call successors, (18), 16 states have call predecessors, (18), 16 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-18 20:38:26,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 171 transitions. [2023-12-18 20:38:26,437 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 171 transitions. Word has length 172 [2023-12-18 20:38:26,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:38:26,438 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 171 transitions. [2023-12-18 20:38:26,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 2.236842105263158) internal successors, (170), 73 states have internal predecessors, (170), 33 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (35), 35 states have call predecessors, (35), 33 states have call successors, (35) [2023-12-18 20:38:26,438 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 171 transitions. [2023-12-18 20:38:26,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-18 20:38:26,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:38:26,439 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:38:26,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-12-18 20:38:26,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-12-18 20:38:26,639 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:38:26,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:38:26,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1848639731, now seen corresponding path program 43 times [2023-12-18 20:38:26,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:38:26,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415481261] [2023-12-18 20:38:26,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:38:26,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:38:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:38:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:38:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:38:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:38:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:38:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:38:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:38:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:38:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:38:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:38:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:38:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:38:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:38:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:38:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:38:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:38:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:38:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:38:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 51 proven. 766 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2023-12-18 20:38:27,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:38:27,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415481261] [2023-12-18 20:38:27,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415481261] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:38:27,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275989042] [2023-12-18 20:38:27,808 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 20:38:27,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:38:27,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:38:27,809 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:38:27,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-18 20:38:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:28,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-18 20:38:28,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:38:29,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:38:30,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:38:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 84 proven. 772 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2023-12-18 20:38:30,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:38:30,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:38:30,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:38:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 51 proven. 766 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2023-12-18 20:38:30,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275989042] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:38:30,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:38:30,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 41, 40] total 79 [2023-12-18 20:38:30,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818060284] [2023-12-18 20:38:30,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:38:30,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-12-18 20:38:30,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:38:30,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-12-18 20:38:30,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=5847, Unknown=0, NotChecked=0, Total=6162 [2023-12-18 20:38:30,783 INFO L87 Difference]: Start difference. First operand 168 states and 171 transitions. Second operand has 79 states, 78 states have (on average 2.3076923076923075) internal successors, (180), 75 states have internal predecessors, (180), 34 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2023-12-18 20:38:34,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:38:34,281 INFO L93 Difference]: Finished difference Result 235 states and 241 transitions. [2023-12-18 20:38:34,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-18 20:38:34,282 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 2.3076923076923075) internal successors, (180), 75 states have internal predecessors, (180), 34 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) Word has length 175 [2023-12-18 20:38:34,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:38:34,282 INFO L225 Difference]: With dead ends: 235 [2023-12-18 20:38:34,282 INFO L226 Difference]: Without dead ends: 233 [2023-12-18 20:38:34,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 330 SyntacticMatches, 17 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5247 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=954, Invalid=16076, Unknown=0, NotChecked=0, Total=17030 [2023-12-18 20:38:34,284 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 195 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 4913 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 5000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 4913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-18 20:38:34,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 2038 Invalid, 5000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 4913 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-18 20:38:34,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-18 20:38:34,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 175. [2023-12-18 20:38:34,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 139 states have (on average 1.0215827338129497) internal successors, (142), 139 states have internal predecessors, (142), 19 states have call successors, (19), 16 states have call predecessors, (19), 16 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-18 20:38:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 180 transitions. [2023-12-18 20:38:34,346 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 180 transitions. Word has length 175 [2023-12-18 20:38:34,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:38:34,347 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 180 transitions. [2023-12-18 20:38:34,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 2.3076923076923075) internal successors, (180), 75 states have internal predecessors, (180), 34 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2023-12-18 20:38:34,347 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 180 transitions. [2023-12-18 20:38:34,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-18 20:38:34,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:38:34,348 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:38:34,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-12-18 20:38:34,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-18 20:38:34,556 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:38:34,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:38:34,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1533809582, now seen corresponding path program 44 times [2023-12-18 20:38:34,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:38:34,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736276396] [2023-12-18 20:38:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:38:34,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:38:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:38:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:38:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:38:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:38:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:38:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:38:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:38:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:38:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:38:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:38:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:38:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:38:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:38:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:38:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:38:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:38:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:38:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:38:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 346 proven. 422 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-18 20:38:35,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:38:35,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736276396] [2023-12-18 20:38:35,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736276396] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:38:35,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288842768] [2023-12-18 20:38:35,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 20:38:35,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:38:35,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:38:35,368 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:38:35,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-12-18 20:38:35,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 20:38:35,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:38:35,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-18 20:38:35,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:38:36,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 392 proven. 376 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-18 20:38:36,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:38:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 392 proven. 376 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-18 20:38:36,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288842768] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:38:36,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:38:36,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 56 [2023-12-18 20:38:36,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579337042] [2023-12-18 20:38:36,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:38:36,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-18 20:38:36,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:38:36,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-18 20:38:36,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=2355, Unknown=0, NotChecked=0, Total=3080 [2023-12-18 20:38:36,668 INFO L87 Difference]: Start difference. First operand 175 states and 180 transitions. Second operand has 56 states, 56 states have (on average 2.642857142857143) internal successors, (148), 56 states have internal predecessors, (148), 18 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2023-12-18 20:38:37,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:38:37,095 INFO L93 Difference]: Finished difference Result 239 states and 245 transitions. [2023-12-18 20:38:37,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-18 20:38:37,095 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.642857142857143) internal successors, (148), 56 states have internal predecessors, (148), 18 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) Word has length 178 [2023-12-18 20:38:37,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:38:37,096 INFO L225 Difference]: With dead ends: 239 [2023-12-18 20:38:37,096 INFO L226 Difference]: Without dead ends: 184 [2023-12-18 20:38:37,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 340 SyntacticMatches, 33 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2412 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1235, Invalid=4021, Unknown=0, NotChecked=0, Total=5256 [2023-12-18 20:38:37,097 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 172 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 20:38:37,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 228 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 20:38:37,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-18 20:38:37,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 171. [2023-12-18 20:38:37,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 135 states have internal predecessors, (137), 19 states have call successors, (19), 16 states have call predecessors, (19), 16 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-18 20:38:37,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 175 transitions. [2023-12-18 20:38:37,151 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 175 transitions. Word has length 178 [2023-12-18 20:38:37,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:38:37,151 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 175 transitions. [2023-12-18 20:38:37,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.642857142857143) internal successors, (148), 56 states have internal predecessors, (148), 18 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2023-12-18 20:38:37,152 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 175 transitions. [2023-12-18 20:38:37,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-18 20:38:37,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:38:37,153 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:38:37,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-12-18 20:38:37,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:38:37,360 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:38:37,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:38:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1603940212, now seen corresponding path program 45 times [2023-12-18 20:38:37,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:38:37,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249692591] [2023-12-18 20:38:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:38:37,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:38:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:38:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:38:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:38:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:38:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:38:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:38:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:38:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:38:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:38:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:38:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:38:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:38:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:38:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:38:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:38:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:38:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:38:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:38:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:38:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 51 proven. 821 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2023-12-18 20:38:38,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:38:38,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249692591] [2023-12-18 20:38:38,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249692591] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:38:38,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067115250] [2023-12-18 20:38:38,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 20:38:38,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:38:38,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:38:38,629 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:38:38,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-12-18 20:38:39,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2023-12-18 20:38:39,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:38:39,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-18 20:38:39,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:38:40,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:38:41,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:38:41,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14 [2023-12-18 20:38:42,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:38:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 117 proven. 821 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2023-12-18 20:38:42,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:38:46,761 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (< 17 (select (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~i~0#1|)) (+ 64 |c_ULTIMATE.start_main_~#a~0#1.offset|)))) is different from false [2023-12-18 20:38:46,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067115250] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:38:46,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:38:46,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 82 [2023-12-18 20:38:46,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615938127] [2023-12-18 20:38:46,767 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:38:46,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2023-12-18 20:38:46,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:38:46,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2023-12-18 20:38:46,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=6422, Unknown=1, NotChecked=162, Total=6972 [2023-12-18 20:38:46,770 INFO L87 Difference]: Start difference. First operand 171 states and 175 transitions. Second operand has 82 states, 80 states have (on average 2.2625) internal successors, (181), 78 states have internal predecessors, (181), 36 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) [2023-12-18 20:38:49,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:38:49,820 INFO L93 Difference]: Finished difference Result 186 states and 189 transitions. [2023-12-18 20:38:49,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-18 20:38:49,821 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 80 states have (on average 2.2625) internal successors, (181), 78 states have internal predecessors, (181), 36 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) Word has length 182 [2023-12-18 20:38:49,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:38:49,822 INFO L225 Difference]: With dead ends: 186 [2023-12-18 20:38:49,822 INFO L226 Difference]: Without dead ends: 184 [2023-12-18 20:38:49,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 215 SyntacticMatches, 17 SemanticMatches, 121 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4720 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1021, Invalid=13744, Unknown=1, NotChecked=240, Total=15006 [2023-12-18 20:38:49,823 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 179 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 4629 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 4675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-18 20:38:49,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1719 Invalid, 4675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4629 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-18 20:38:49,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-18 20:38:49,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 178. [2023-12-18 20:38:49,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 141 states have (on average 1.0141843971631206) internal successors, (143), 141 states have internal predecessors, (143), 19 states have call successors, (19), 17 states have call predecessors, (19), 17 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-18 20:38:49,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 181 transitions. [2023-12-18 20:38:49,897 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 181 transitions. Word has length 182 [2023-12-18 20:38:49,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:38:49,898 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 181 transitions. [2023-12-18 20:38:49,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 80 states have (on average 2.2625) internal successors, (181), 78 states have internal predecessors, (181), 36 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) [2023-12-18 20:38:49,898 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 181 transitions. [2023-12-18 20:38:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-18 20:38:49,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:38:49,899 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:38:49,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-12-18 20:38:50,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-12-18 20:38:50,110 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:38:50,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:38:50,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1477288497, now seen corresponding path program 46 times [2023-12-18 20:38:50,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:38:50,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125207561] [2023-12-18 20:38:50,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:38:50,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:38:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:38:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:38:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:38:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:38:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:38:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:38:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:38:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:38:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:38:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:38:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:38:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:38:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:38:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:38:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:38:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:38:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:38:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:38:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:38:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1501 backedges. 54 proven. 865 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2023-12-18 20:38:51,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:38:51,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125207561] [2023-12-18 20:38:51,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125207561] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:38:51,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522648005] [2023-12-18 20:38:51,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 20:38:51,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:38:51,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:38:51,436 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:38:51,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-12-18 20:38:51,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 20:38:51,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:38:51,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 94 conjunts are in the unsatisfiable core [2023-12-18 20:38:51,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:38:52,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:38:54,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:38:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1501 backedges. 93 proven. 868 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2023-12-18 20:38:54,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:38:54,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:38:54,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:38:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1501 backedges. 54 proven. 865 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2023-12-18 20:38:54,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522648005] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:38:54,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:38:54,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 43, 42] total 83 [2023-12-18 20:38:54,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387447586] [2023-12-18 20:38:54,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:38:54,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-12-18 20:38:54,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:38:54,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-12-18 20:38:54,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=6474, Unknown=0, NotChecked=0, Total=6806 [2023-12-18 20:38:54,776 INFO L87 Difference]: Start difference. First operand 178 states and 181 transitions. Second operand has 83 states, 82 states have (on average 2.317073170731707) internal successors, (190), 79 states have internal predecessors, (190), 36 states have call successors, (37), 1 states have call predecessors, (37), 2 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) [2023-12-18 20:38:58,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:38:58,668 INFO L93 Difference]: Finished difference Result 248 states and 254 transitions. [2023-12-18 20:38:58,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-12-18 20:38:58,668 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 2.317073170731707) internal successors, (190), 79 states have internal predecessors, (190), 36 states have call successors, (37), 1 states have call predecessors, (37), 2 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) Word has length 185 [2023-12-18 20:38:58,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:38:58,669 INFO L225 Difference]: With dead ends: 248 [2023-12-18 20:38:58,669 INFO L226 Difference]: Without dead ends: 246 [2023-12-18 20:38:58,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 349 SyntacticMatches, 18 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5870 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1009, Invalid=17897, Unknown=0, NotChecked=0, Total=18906 [2023-12-18 20:38:58,671 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 243 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 5655 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 5742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 5655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-18 20:38:58,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1933 Invalid, 5742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 5655 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-18 20:38:58,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-12-18 20:38:58,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 185. [2023-12-18 20:38:58,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 147 states have (on average 1.0204081632653061) internal successors, (150), 147 states have internal predecessors, (150), 20 states have call successors, (20), 17 states have call predecessors, (20), 17 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-18 20:38:58,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 190 transitions. [2023-12-18 20:38:58,745 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 190 transitions. Word has length 185 [2023-12-18 20:38:58,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:38:58,745 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 190 transitions. [2023-12-18 20:38:58,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 2.317073170731707) internal successors, (190), 79 states have internal predecessors, (190), 36 states have call successors, (37), 1 states have call predecessors, (37), 2 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) [2023-12-18 20:38:58,745 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 190 transitions. [2023-12-18 20:38:58,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-18 20:38:58,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:38:58,746 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:38:58,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-12-18 20:38:58,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-12-18 20:38:58,954 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:38:58,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:38:58,955 INFO L85 PathProgramCache]: Analyzing trace with hash -622667180, now seen corresponding path program 47 times [2023-12-18 20:38:58,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:38:58,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978464545] [2023-12-18 20:38:58,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:38:58,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:38:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:38:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:38:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:38:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:38:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:38:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:38:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:38:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:38:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:38:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:38:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:38:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:38:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:38:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:38:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:38:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:38:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:38:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:38:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:38:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:38:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 393 proven. 474 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-18 20:38:59,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:38:59,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978464545] [2023-12-18 20:38:59,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978464545] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:38:59,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890905921] [2023-12-18 20:38:59,682 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 20:38:59,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:38:59,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:38:59,683 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:38:59,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-12-18 20:38:59,991 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2023-12-18 20:38:59,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:38:59,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-18 20:38:59,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:39:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 442 proven. 425 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-18 20:39:00,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:39:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 442 proven. 425 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-18 20:39:01,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890905921] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:39:01,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:39:01,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2023-12-18 20:39:01,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506877797] [2023-12-18 20:39:01,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:39:01,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-18 20:39:01,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:39:01,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-18 20:39:01,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=2619, Unknown=0, NotChecked=0, Total=3422 [2023-12-18 20:39:01,211 INFO L87 Difference]: Start difference. First operand 185 states and 190 transitions. Second operand has 59 states, 59 states have (on average 2.6440677966101696) internal successors, (156), 59 states have internal predecessors, (156), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2023-12-18 20:39:01,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:39:01,660 INFO L93 Difference]: Finished difference Result 252 states and 258 transitions. [2023-12-18 20:39:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-18 20:39:01,660 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.6440677966101696) internal successors, (156), 59 states have internal predecessors, (156), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) Word has length 188 [2023-12-18 20:39:01,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:39:01,661 INFO L225 Difference]: With dead ends: 252 [2023-12-18 20:39:01,661 INFO L226 Difference]: Without dead ends: 194 [2023-12-18 20:39:01,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 359 SyntacticMatches, 35 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2690 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1370, Invalid=4482, Unknown=0, NotChecked=0, Total=5852 [2023-12-18 20:39:01,663 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 178 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 20:39:01,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 205 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 20:39:01,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-18 20:39:01,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 181. [2023-12-18 20:39:01,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 143 states have (on average 1.013986013986014) internal successors, (145), 143 states have internal predecessors, (145), 20 states have call successors, (20), 17 states have call predecessors, (20), 17 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-18 20:39:01,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2023-12-18 20:39:01,727 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 188 [2023-12-18 20:39:01,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:39:01,728 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2023-12-18 20:39:01,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.6440677966101696) internal successors, (156), 59 states have internal predecessors, (156), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2023-12-18 20:39:01,728 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2023-12-18 20:39:01,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-18 20:39:01,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:39:01,729 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:39:01,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-12-18 20:39:01,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:39:01,937 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:39:01,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:39:01,937 INFO L85 PathProgramCache]: Analyzing trace with hash 743727986, now seen corresponding path program 48 times [2023-12-18 20:39:01,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:39:01,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232367186] [2023-12-18 20:39:01,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:39:01,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:39:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:39:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:39:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:39:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:39:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:39:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:39:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:39:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:39:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:39:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:39:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:39:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:39:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:39:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:39:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:39:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:39:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:39:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:39:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:39:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:39:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:03,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1629 backedges. 54 proven. 923 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2023-12-18 20:39:03,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:39:03,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232367186] [2023-12-18 20:39:03,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232367186] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:39:03,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730494128] [2023-12-18 20:39:03,341 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 20:39:03,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:39:03,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:39:03,344 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:39:03,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-12-18 20:39:04,009 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2023-12-18 20:39:04,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:39:04,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-18 20:39:04,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:39:05,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:39:05,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 20:39:05,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14 [2023-12-18 20:39:06,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:39:06,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1629 backedges. 130 proven. 959 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2023-12-18 20:39:06,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:39:39,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730494128] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:39:39,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:39:39,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 86 [2023-12-18 20:39:39,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250364576] [2023-12-18 20:39:39,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:39:39,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-18 20:39:39,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:39:39,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-18 20:39:39,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=7222, Unknown=7, NotChecked=0, Total=7656 [2023-12-18 20:39:39,426 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand has 86 states, 84 states have (on average 2.2738095238095237) internal successors, (191), 82 states have internal predecessors, (191), 38 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2023-12-18 20:39:42,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:39:42,739 INFO L93 Difference]: Finished difference Result 196 states and 199 transitions. [2023-12-18 20:39:42,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-18 20:39:42,740 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 84 states have (on average 2.2738095238095237) internal successors, (191), 82 states have internal predecessors, (191), 38 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) Word has length 192 [2023-12-18 20:39:42,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:39:42,740 INFO L225 Difference]: With dead ends: 196 [2023-12-18 20:39:42,740 INFO L226 Difference]: Without dead ends: 194 [2023-12-18 20:39:42,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 227 SyntacticMatches, 18 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5311 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=1131, Invalid=15374, Unknown=7, NotChecked=0, Total=16512 [2023-12-18 20:39:42,742 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 217 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 5055 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 5100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 5055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-18 20:39:42,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1591 Invalid, 5100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 5055 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-18 20:39:42,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-18 20:39:42,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 188. [2023-12-18 20:39:42,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 149 states have (on average 1.0134228187919463) internal successors, (151), 149 states have internal predecessors, (151), 20 states have call successors, (20), 18 states have call predecessors, (20), 18 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-18 20:39:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 191 transitions. [2023-12-18 20:39:42,802 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 191 transitions. Word has length 192 [2023-12-18 20:39:42,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:39:42,802 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 191 transitions. [2023-12-18 20:39:42,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 84 states have (on average 2.2738095238095237) internal successors, (191), 82 states have internal predecessors, (191), 38 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2023-12-18 20:39:42,802 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 191 transitions. [2023-12-18 20:39:42,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-18 20:39:42,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:39:42,803 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:39:42,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-12-18 20:39:43,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-12-18 20:39:43,004 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:39:43,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:39:43,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1330248333, now seen corresponding path program 49 times [2023-12-18 20:39:43,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:39:43,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826802342] [2023-12-18 20:39:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:39:43,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:39:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:39:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:39:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:39:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:39:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:39:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:39:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:39:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:39:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:39:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:39:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:39:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:39:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:39:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:39:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:39:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:39:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:39:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:39:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:39:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:39:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 57 proven. 970 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2023-12-18 20:39:44,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:39:44,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826802342] [2023-12-18 20:39:44,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826802342] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:39:44,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162792892] [2023-12-18 20:39:44,356 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 20:39:44,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:39:44,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:39:44,357 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:39:44,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-12-18 20:39:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:44,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-18 20:39:44,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:39:45,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:39:47,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:39:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 93 proven. 979 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2023-12-18 20:39:47,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:39:47,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:39:47,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:39:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 57 proven. 970 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2023-12-18 20:39:47,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162792892] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:39:47,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:39:47,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 44] total 89 [2023-12-18 20:39:47,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799018769] [2023-12-18 20:39:47,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:39:47,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-12-18 20:39:47,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:39:47,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-12-18 20:39:47,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=7474, Unknown=0, NotChecked=0, Total=7832 [2023-12-18 20:39:47,947 INFO L87 Difference]: Start difference. First operand 188 states and 191 transitions. Second operand has 89 states, 87 states have (on average 2.32183908045977) internal successors, (202), 84 states have internal predecessors, (202), 39 states have call successors, (40), 1 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2023-12-18 20:39:52,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:39:52,263 INFO L93 Difference]: Finished difference Result 261 states and 267 transitions. [2023-12-18 20:39:52,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-18 20:39:52,263 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 87 states have (on average 2.32183908045977) internal successors, (202), 84 states have internal predecessors, (202), 39 states have call successors, (40), 1 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) Word has length 195 [2023-12-18 20:39:52,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:39:52,264 INFO L225 Difference]: With dead ends: 261 [2023-12-18 20:39:52,264 INFO L226 Difference]: Without dead ends: 259 [2023-12-18 20:39:52,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 367 SyntacticMatches, 19 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6695 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1076, Invalid=20386, Unknown=0, NotChecked=0, Total=21462 [2023-12-18 20:39:52,266 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 253 mSDsluCounter, 2353 mSDsCounter, 0 mSdLazyCounter, 6045 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 6136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 6045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-18 20:39:52,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 2402 Invalid, 6136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 6045 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-18 20:39:52,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-18 20:39:52,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 195. [2023-12-18 20:39:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 155 states have (on average 1.0193548387096774) internal successors, (158), 155 states have internal predecessors, (158), 21 states have call successors, (21), 18 states have call predecessors, (21), 18 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-18 20:39:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 200 transitions. [2023-12-18 20:39:52,339 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 200 transitions. Word has length 195 [2023-12-18 20:39:52,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:39:52,340 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 200 transitions. [2023-12-18 20:39:52,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 87 states have (on average 2.32183908045977) internal successors, (202), 84 states have internal predecessors, (202), 39 states have call successors, (40), 1 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2023-12-18 20:39:52,340 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 200 transitions. [2023-12-18 20:39:52,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-18 20:39:52,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:39:52,341 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:39:52,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-12-18 20:39:52,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:39:52,541 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:39:52,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:39:52,542 INFO L85 PathProgramCache]: Analyzing trace with hash 240752594, now seen corresponding path program 50 times [2023-12-18 20:39:52,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:39:52,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816301874] [2023-12-18 20:39:52,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:39:52,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:39:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:39:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:39:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:39:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:39:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:39:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:39:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:39:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:39:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:39:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:39:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:39:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:39:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:39:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:39:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:39:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:39:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:39:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:39:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:39:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:39:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1732 backedges. 443 proven. 529 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-18 20:39:53,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:39:53,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816301874] [2023-12-18 20:39:53,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816301874] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:39:53,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615413294] [2023-12-18 20:39:53,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 20:39:53,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:39:53,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:39:53,398 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:39:53,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-12-18 20:39:53,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 20:39:53,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:39:53,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-18 20:39:53,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:39:54,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1732 backedges. 495 proven. 477 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-18 20:39:54,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:39:54,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1732 backedges. 495 proven. 477 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-18 20:39:54,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615413294] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:39:54,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:39:54,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 62 [2023-12-18 20:39:54,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945892333] [2023-12-18 20:39:54,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:39:54,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-18 20:39:54,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:39:54,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-18 20:39:54,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=885, Invalid=2897, Unknown=0, NotChecked=0, Total=3782 [2023-12-18 20:39:54,907 INFO L87 Difference]: Start difference. First operand 195 states and 200 transitions. Second operand has 62 states, 62 states have (on average 2.6451612903225805) internal successors, (164), 62 states have internal predecessors, (164), 20 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2023-12-18 20:39:55,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:39:55,532 INFO L93 Difference]: Finished difference Result 265 states and 271 transitions. [2023-12-18 20:39:55,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-18 20:39:55,532 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.6451612903225805) internal successors, (164), 62 states have internal predecessors, (164), 20 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) Word has length 198 [2023-12-18 20:39:55,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:39:55,533 INFO L225 Difference]: With dead ends: 265 [2023-12-18 20:39:55,533 INFO L226 Difference]: Without dead ends: 204 [2023-12-18 20:39:55,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 378 SyntacticMatches, 37 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2983 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1512, Invalid=4968, Unknown=0, NotChecked=0, Total=6480 [2023-12-18 20:39:55,535 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 250 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 20:39:55,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 248 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 20:39:55,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-18 20:39:55,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 191. [2023-12-18 20:39:55,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 151 states have (on average 1.0132450331125828) internal successors, (153), 151 states have internal predecessors, (153), 21 states have call successors, (21), 18 states have call predecessors, (21), 18 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-18 20:39:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 195 transitions. [2023-12-18 20:39:55,646 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 195 transitions. Word has length 198 [2023-12-18 20:39:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:39:55,646 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 195 transitions. [2023-12-18 20:39:55,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.6451612903225805) internal successors, (164), 62 states have internal predecessors, (164), 20 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2023-12-18 20:39:55,647 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 195 transitions. [2023-12-18 20:39:55,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-18 20:39:55,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:39:55,648 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 19, 19, 19, 19, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:39:55,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-12-18 20:39:55,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-12-18 20:39:55,856 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:39:55,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:39:55,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1638864524, now seen corresponding path program 51 times [2023-12-18 20:39:55,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:39:55,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625864140] [2023-12-18 20:39:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:39:55,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:39:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:39:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:39:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:39:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:39:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:39:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:39:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:39:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:39:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:39:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:39:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:39:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:39:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:39:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:39:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:39:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:39:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:39:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:39:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:39:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:39:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-18 20:39:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:39:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1814 backedges. 57 proven. 1031 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2023-12-18 20:39:57,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:39:57,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625864140] [2023-12-18 20:39:57,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625864140] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:39:57,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246015711] [2023-12-18 20:39:57,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 20:39:57,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:39:57,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:39:57,596 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:39:57,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-12-18 20:39:59,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2023-12-18 20:39:59,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:39:59,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 94 conjunts are in the unsatisfiable core [2023-12-18 20:39:59,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:40:00,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 20:40:00,665 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-12-18 20:40:00,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2023-12-18 20:40:01,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2023-12-18 20:40:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1814 backedges. 131 proven. 1031 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2023-12-18 20:40:01,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:40:35,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246015711] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:40:35,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:40:35,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 88 [2023-12-18 20:40:35,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221678008] [2023-12-18 20:40:35,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:40:35,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-12-18 20:40:35,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:40:35,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-12-18 20:40:35,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=7602, Unknown=7, NotChecked=0, Total=8010 [2023-12-18 20:40:35,783 INFO L87 Difference]: Start difference. First operand 191 states and 195 transitions. Second operand has 88 states, 88 states have (on average 2.272727272727273) internal successors, (200), 84 states have internal predecessors, (200), 39 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (41), 41 states have call predecessors, (41), 39 states have call successors, (41) [2023-12-18 20:40:39,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:40:39,343 INFO L93 Difference]: Finished difference Result 206 states and 209 transitions. [2023-12-18 20:40:39,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-18 20:40:39,343 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.272727272727273) internal successors, (200), 84 states have internal predecessors, (200), 39 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (41), 41 states have call predecessors, (41), 39 states have call successors, (41) Word has length 202 [2023-12-18 20:40:39,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:40:39,344 INFO L225 Difference]: With dead ends: 206 [2023-12-18 20:40:39,344 INFO L226 Difference]: Without dead ends: 204 [2023-12-18 20:40:39,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 240 SyntacticMatches, 19 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5715 ImplicationChecksByTransitivity, 37.9s TimeCoverageRelationStatistics Valid=1101, Invalid=16448, Unknown=7, NotChecked=0, Total=17556 [2023-12-18 20:40:39,346 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 206 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 5655 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 5702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 5655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-18 20:40:39,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1776 Invalid, 5702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 5655 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-18 20:40:39,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-18 20:40:39,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 198. [2023-12-18 20:40:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 157 states have (on average 1.0127388535031847) internal successors, (159), 157 states have internal predecessors, (159), 21 states have call successors, (21), 19 states have call predecessors, (21), 19 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-18 20:40:39,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 201 transitions. [2023-12-18 20:40:39,416 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 201 transitions. Word has length 202 [2023-12-18 20:40:39,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:40:39,416 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 201 transitions. [2023-12-18 20:40:39,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.272727272727273) internal successors, (200), 84 states have internal predecessors, (200), 39 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (41), 41 states have call predecessors, (41), 39 states have call successors, (41) [2023-12-18 20:40:39,416 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 201 transitions. [2023-12-18 20:40:39,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-18 20:40:39,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:40:39,417 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 19, 19, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:40:39,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-12-18 20:40:39,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-12-18 20:40:39,624 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:40:39,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:40:39,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1780787249, now seen corresponding path program 52 times [2023-12-18 20:40:39,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:40:39,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984170557] [2023-12-18 20:40:39,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:40:39,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:40:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:40:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:40:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:40:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:40:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:40:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:40:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:40:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:40:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:40:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:40:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:40:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:40:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:40:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:40:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:40:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:40:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:40:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:40:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:40:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:40:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-18 20:40:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1867 backedges. 60 proven. 1081 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2023-12-18 20:40:41,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:40:41,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984170557] [2023-12-18 20:40:41,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984170557] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:40:41,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811350653] [2023-12-18 20:40:41,227 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 20:40:41,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:40:41,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:40:41,233 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:40:41,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-12-18 20:40:41,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 20:40:41,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:40:41,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 102 conjunts are in the unsatisfiable core [2023-12-18 20:40:41,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:40:42,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:40:44,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:40:44,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1867 backedges. 60 proven. 1081 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2023-12-18 20:40:44,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:40:44,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:40:44,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:40:45,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1867 backedges. 60 proven. 1081 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2023-12-18 20:40:45,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811350653] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:40:45,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:40:45,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 48, 47] total 95 [2023-12-18 20:40:45,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142032947] [2023-12-18 20:40:45,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:40:45,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-12-18 20:40:45,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:40:45,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-12-18 20:40:45,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=8541, Unknown=0, NotChecked=0, Total=8930 [2023-12-18 20:40:45,305 INFO L87 Difference]: Start difference. First operand 198 states and 201 transitions. Second operand has 95 states, 93 states have (on average 2.2795698924731185) internal successors, (212), 90 states have internal predecessors, (212), 41 states have call successors, (42), 1 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-18 20:40:49,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:40:49,939 INFO L93 Difference]: Finished difference Result 274 states and 280 transitions. [2023-12-18 20:40:49,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-12-18 20:40:49,940 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 93 states have (on average 2.2795698924731185) internal successors, (212), 90 states have internal predecessors, (212), 41 states have call successors, (42), 1 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 41 states have call successors, (42) Word has length 205 [2023-12-18 20:40:49,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:40:49,941 INFO L225 Difference]: With dead ends: 274 [2023-12-18 20:40:49,941 INFO L226 Difference]: Without dead ends: 272 [2023-12-18 20:40:49,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 384 SyntacticMatches, 20 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8020 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1198, Invalid=24242, Unknown=0, NotChecked=0, Total=25440 [2023-12-18 20:40:49,944 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 293 mSDsluCounter, 2114 mSDsCounter, 0 mSdLazyCounter, 6311 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 6416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 6311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-18 20:40:49,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 2164 Invalid, 6416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 6311 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-18 20:40:49,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-18 20:40:50,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 205. [2023-12-18 20:40:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 163 states have (on average 1.01840490797546) internal successors, (166), 163 states have internal predecessors, (166), 22 states have call successors, (22), 19 states have call predecessors, (22), 19 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-18 20:40:50,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 210 transitions. [2023-12-18 20:40:50,035 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 210 transitions. Word has length 205 [2023-12-18 20:40:50,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:40:50,036 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 210 transitions. [2023-12-18 20:40:50,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 93 states have (on average 2.2795698924731185) internal successors, (212), 90 states have internal predecessors, (212), 41 states have call successors, (42), 1 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-18 20:40:50,036 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 210 transitions. [2023-12-18 20:40:50,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-18 20:40:50,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:40:50,037 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:40:50,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-12-18 20:40:50,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:40:50,244 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:40:50,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:40:50,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2495572, now seen corresponding path program 53 times [2023-12-18 20:40:50,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:40:50,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195926331] [2023-12-18 20:40:50,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:40:50,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:40:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:40:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:40:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:40:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:40:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:40:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:40:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:40:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:40:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:40:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:40:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:40:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:40:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:40:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:40:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:40:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:40:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:40:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:40:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:40:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:40:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-18 20:40:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1923 backedges. 496 proven. 587 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-18 20:40:51,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:40:51,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195926331] [2023-12-18 20:40:51,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195926331] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:40:51,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619245230] [2023-12-18 20:40:51,117 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 20:40:51,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:40:51,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:40:51,119 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:40:51,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-12-18 20:40:51,467 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2023-12-18 20:40:51,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:40:51,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-18 20:40:51,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:40:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1923 backedges. 551 proven. 532 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-18 20:40:52,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:40:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1923 backedges. 551 proven. 532 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-18 20:40:52,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619245230] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:40:52,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:40:52,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2023-12-18 20:40:52,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018989777] [2023-12-18 20:40:52,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:40:52,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-18 20:40:52,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:40:52,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-18 20:40:52,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=971, Invalid=3189, Unknown=0, NotChecked=0, Total=4160 [2023-12-18 20:40:52,881 INFO L87 Difference]: Start difference. First operand 205 states and 210 transitions. Second operand has 65 states, 65 states have (on average 2.646153846153846) internal successors, (172), 65 states have internal predecessors, (172), 21 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2023-12-18 20:40:53,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:40:53,422 INFO L93 Difference]: Finished difference Result 278 states and 284 transitions. [2023-12-18 20:40:53,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-18 20:40:53,422 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.646153846153846) internal successors, (172), 65 states have internal predecessors, (172), 21 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) Word has length 208 [2023-12-18 20:40:53,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:40:53,423 INFO L225 Difference]: With dead ends: 278 [2023-12-18 20:40:53,423 INFO L226 Difference]: Without dead ends: 214 [2023-12-18 20:40:53,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 397 SyntacticMatches, 39 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3291 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1661, Invalid=5479, Unknown=0, NotChecked=0, Total=7140 [2023-12-18 20:40:53,424 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 194 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 20:40:53,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 294 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 20:40:53,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-18 20:40:53,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 201. [2023-12-18 20:40:53,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 159 states have internal predecessors, (161), 22 states have call successors, (22), 19 states have call predecessors, (22), 19 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-18 20:40:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 205 transitions. [2023-12-18 20:40:53,498 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 205 transitions. Word has length 208 [2023-12-18 20:40:53,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:40:53,498 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 205 transitions. [2023-12-18 20:40:53,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.646153846153846) internal successors, (172), 65 states have internal predecessors, (172), 21 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2023-12-18 20:40:53,498 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 205 transitions. [2023-12-18 20:40:53,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-18 20:40:53,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:40:53,499 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 20, 20, 20, 20, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:40:53,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-12-18 20:40:53,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:40:53,700 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:40:53,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:40:53,700 INFO L85 PathProgramCache]: Analyzing trace with hash -480821518, now seen corresponding path program 54 times [2023-12-18 20:40:53,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:40:53,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856811492] [2023-12-18 20:40:53,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:40:53,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:40:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:40:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:40:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:40:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:40:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:40:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:40:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:40:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:40:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:40:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:40:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:40:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:40:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:40:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:40:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:40:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:40:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:40:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:40:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:40:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:40:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-18 20:40:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-18 20:40:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:40:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2009 backedges. 60 proven. 1145 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2023-12-18 20:40:55,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:40:55,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856811492] [2023-12-18 20:40:55,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856811492] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:40:55,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663668664] [2023-12-18 20:40:55,253 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 20:40:55,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:40:55,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:40:55,254 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:40:55,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-12-18 20:40:56,350 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2023-12-18 20:40:56,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:40:56,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 103 conjunts are in the unsatisfiable core [2023-12-18 20:40:56,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:40:57,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 20:40:57,816 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-12-18 20:40:57,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2023-12-18 20:40:59,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2023-12-18 20:40:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2009 backedges. 144 proven. 1187 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2023-12-18 20:40:59,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:41:52,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663668664] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:41:52,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:41:52,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 92 [2023-12-18 20:41:52,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632892721] [2023-12-18 20:41:52,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:41:52,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2023-12-18 20:41:52,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:41:52,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2023-12-18 20:41:52,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=8310, Unknown=12, NotChecked=0, Total=8742 [2023-12-18 20:41:52,004 INFO L87 Difference]: Start difference. First operand 201 states and 205 transitions. Second operand has 92 states, 92 states have (on average 2.282608695652174) internal successors, (210), 88 states have internal predecessors, (210), 41 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (43), 43 states have call predecessors, (43), 41 states have call successors, (43) [2023-12-18 20:41:55,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:41:55,991 INFO L93 Difference]: Finished difference Result 216 states and 219 transitions. [2023-12-18 20:41:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-18 20:41:55,991 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.282608695652174) internal successors, (210), 88 states have internal predecessors, (210), 41 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (43), 43 states have call predecessors, (43), 41 states have call successors, (43) Word has length 212 [2023-12-18 20:41:55,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:41:55,992 INFO L225 Difference]: With dead ends: 216 [2023-12-18 20:41:55,992 INFO L226 Difference]: Without dead ends: 214 [2023-12-18 20:41:55,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 252 SyntacticMatches, 20 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6278 ImplicationChecksByTransitivity, 57.1s TimeCoverageRelationStatistics Valid=1156, Invalid=18014, Unknown=12, NotChecked=0, Total=19182 [2023-12-18 20:41:55,994 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 227 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 5907 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 5961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 5907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-18 20:41:55,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 1833 Invalid, 5961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 5907 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-18 20:41:55,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-18 20:41:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 208. [2023-12-18 20:41:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 165 states have internal predecessors, (167), 22 states have call successors, (22), 20 states have call predecessors, (22), 20 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-18 20:41:56,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 211 transitions. [2023-12-18 20:41:56,107 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 211 transitions. Word has length 212 [2023-12-18 20:41:56,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:41:56,107 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 211 transitions. [2023-12-18 20:41:56,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.282608695652174) internal successors, (210), 88 states have internal predecessors, (210), 41 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (43), 43 states have call predecessors, (43), 41 states have call successors, (43) [2023-12-18 20:41:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 211 transitions. [2023-12-18 20:41:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-12-18 20:41:56,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:41:56,108 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 20, 20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:41:56,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-12-18 20:41:56,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:41:56,318 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:41:56,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:41:56,318 INFO L85 PathProgramCache]: Analyzing trace with hash -432309773, now seen corresponding path program 55 times [2023-12-18 20:41:56,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:41:56,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702260795] [2023-12-18 20:41:56,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:41:56,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:41:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:41:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:41:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:41:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:41:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:41:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:41:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:41:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:41:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:41:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:41:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:41:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:41:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:41:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:41:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:41:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:41:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:41:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:41:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:41:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:41:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-18 20:41:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-18 20:41:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2065 backedges. 63 proven. 1198 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2023-12-18 20:41:58,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:41:58,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702260795] [2023-12-18 20:41:58,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702260795] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:41:58,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89949178] [2023-12-18 20:41:58,181 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 20:41:58,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:41:58,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:41:58,182 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:41:58,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-12-18 20:41:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:41:58,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 106 conjunts are in the unsatisfiable core [2023-12-18 20:41:58,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:41:59,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:42:01,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:42:01,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2065 backedges. 102 proven. 1210 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2023-12-18 20:42:01,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:42:02,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:42:02,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:42:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2065 backedges. 63 proven. 1198 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2023-12-18 20:42:02,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89949178] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:42:02,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:42:02,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 48] total 97 [2023-12-18 20:42:02,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479287833] [2023-12-18 20:42:02,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:42:02,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-12-18 20:42:02,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:42:02,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-12-18 20:42:02,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=8920, Unknown=0, NotChecked=0, Total=9312 [2023-12-18 20:42:02,409 INFO L87 Difference]: Start difference. First operand 208 states and 211 transitions. Second operand has 97 states, 95 states have (on average 2.336842105263158) internal successors, (222), 92 states have internal predecessors, (222), 43 states have call successors, (44), 1 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-18 20:42:07,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:42:07,343 INFO L93 Difference]: Finished difference Result 287 states and 293 transitions. [2023-12-18 20:42:07,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-12-18 20:42:07,344 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 95 states have (on average 2.336842105263158) internal successors, (222), 92 states have internal predecessors, (222), 43 states have call successors, (44), 1 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 43 states have call successors, (44) Word has length 215 [2023-12-18 20:42:07,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:42:07,345 INFO L225 Difference]: With dead ends: 287 [2023-12-18 20:42:07,345 INFO L226 Difference]: Without dead ends: 285 [2023-12-18 20:42:07,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 405 SyntacticMatches, 21 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8132 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1186, Invalid=24574, Unknown=0, NotChecked=0, Total=25760 [2023-12-18 20:42:07,346 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 399 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 6952 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 2319 SdHoareTripleChecker+Invalid, 7056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 6952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-18 20:42:07,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 2319 Invalid, 7056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 6952 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-18 20:42:07,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-18 20:42:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 215. [2023-12-18 20:42:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 171 states have (on average 1.0175438596491229) internal successors, (174), 171 states have internal predecessors, (174), 23 states have call successors, (23), 20 states have call predecessors, (23), 20 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-18 20:42:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 220 transitions. [2023-12-18 20:42:07,462 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 220 transitions. Word has length 215 [2023-12-18 20:42:07,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:42:07,463 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 220 transitions. [2023-12-18 20:42:07,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 95 states have (on average 2.336842105263158) internal successors, (222), 92 states have internal predecessors, (222), 43 states have call successors, (44), 1 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-18 20:42:07,463 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 220 transitions. [2023-12-18 20:42:07,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-18 20:42:07,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:42:07,464 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:42:07,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2023-12-18 20:42:07,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-12-18 20:42:07,673 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:42:07,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:42:07,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1672074066, now seen corresponding path program 56 times [2023-12-18 20:42:07,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:42:07,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379701271] [2023-12-18 20:42:07,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:42:07,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:42:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:42:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:42:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:42:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:42:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:42:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:42:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:42:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:42:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:42:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:42:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:42:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:42:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:42:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:42:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:42:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:42:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:42:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:42:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:42:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:42:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-18 20:42:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-18 20:42:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:08,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2124 backedges. 552 proven. 648 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-18 20:42:08,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:42:08,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379701271] [2023-12-18 20:42:08,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379701271] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:42:08,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352904900] [2023-12-18 20:42:08,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 20:42:08,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:42:08,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:42:08,657 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:42:08,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-12-18 20:42:08,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 20:42:08,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:42:08,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-18 20:42:08,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:42:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2124 backedges. 610 proven. 590 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-18 20:42:09,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:42:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2124 backedges. 610 proven. 590 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-18 20:42:10,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352904900] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:42:10,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:42:10,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 68 [2023-12-18 20:42:10,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250078672] [2023-12-18 20:42:10,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:42:10,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-18 20:42:10,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:42:10,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-18 20:42:10,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1061, Invalid=3495, Unknown=0, NotChecked=0, Total=4556 [2023-12-18 20:42:10,527 INFO L87 Difference]: Start difference. First operand 215 states and 220 transitions. Second operand has 68 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 68 states have internal predecessors, (180), 22 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2023-12-18 20:42:11,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:42:11,119 INFO L93 Difference]: Finished difference Result 291 states and 297 transitions. [2023-12-18 20:42:11,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-18 20:42:11,120 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 68 states have internal predecessors, (180), 22 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) Word has length 218 [2023-12-18 20:42:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:42:11,121 INFO L225 Difference]: With dead ends: 291 [2023-12-18 20:42:11,121 INFO L226 Difference]: Without dead ends: 224 [2023-12-18 20:42:11,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 416 SyntacticMatches, 41 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3614 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1817, Invalid=6015, Unknown=0, NotChecked=0, Total=7832 [2023-12-18 20:42:11,122 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 218 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 20:42:11,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 280 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 20:42:11,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-18 20:42:11,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 211. [2023-12-18 20:42:11,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 167 states have (on average 1.0119760479041917) internal successors, (169), 167 states have internal predecessors, (169), 23 states have call successors, (23), 20 states have call predecessors, (23), 20 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-18 20:42:11,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 215 transitions. [2023-12-18 20:42:11,204 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 215 transitions. Word has length 218 [2023-12-18 20:42:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:42:11,204 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 215 transitions. [2023-12-18 20:42:11,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 68 states have internal predecessors, (180), 22 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2023-12-18 20:42:11,204 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 215 transitions. [2023-12-18 20:42:11,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-18 20:42:11,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:42:11,205 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 21, 21, 21, 21, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:42:11,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2023-12-18 20:42:11,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-12-18 20:42:11,412 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:42:11,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:42:11,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1242911604, now seen corresponding path program 57 times [2023-12-18 20:42:11,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:42:11,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340050658] [2023-12-18 20:42:11,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:42:11,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:42:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:42:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:42:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:42:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:42:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:42:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:42:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:42:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:42:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:42:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:42:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:42:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:42:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:42:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:42:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:42:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:42:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:42:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:42:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:42:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:42:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-18 20:42:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-18 20:42:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-18 20:42:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:42:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 63 proven. 1265 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2023-12-18 20:42:13,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:42:13,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340050658] [2023-12-18 20:42:13,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340050658] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:42:13,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059372208] [2023-12-18 20:42:13,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 20:42:13,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:42:13,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:42:13,260 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:42:13,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-12-18 20:42:15,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2023-12-18 20:42:15,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:42:15,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 102 conjunts are in the unsatisfiable core [2023-12-18 20:42:15,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:42:17,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 20:42:17,347 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-12-18 20:42:17,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2023-12-18 20:42:18,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2023-12-18 20:42:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 145 proven. 1265 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2023-12-18 20:42:18,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:43:07,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059372208] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:43:07,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:43:07,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 97 [2023-12-18 20:43:07,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71925019] [2023-12-18 20:43:07,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:43:07,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-12-18 20:43:07,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:43:07,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-12-18 20:43:07,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=9248, Unknown=10, NotChecked=0, Total=9702 [2023-12-18 20:43:07,756 INFO L87 Difference]: Start difference. First operand 211 states and 215 transitions. Second operand has 97 states, 96 states have (on average 2.2916666666666665) internal successors, (220), 93 states have internal predecessors, (220), 43 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (45), 45 states have call predecessors, (45), 43 states have call successors, (45) [2023-12-18 20:43:12,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:43:12,226 INFO L93 Difference]: Finished difference Result 226 states and 229 transitions. [2023-12-18 20:43:12,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-18 20:43:12,226 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 2.2916666666666665) internal successors, (220), 93 states have internal predecessors, (220), 43 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (45), 45 states have call predecessors, (45), 43 states have call successors, (45) Word has length 222 [2023-12-18 20:43:12,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:43:12,227 INFO L225 Difference]: With dead ends: 226 [2023-12-18 20:43:12,227 INFO L226 Difference]: Without dead ends: 224 [2023-12-18 20:43:12,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 264 SyntacticMatches, 21 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6974 ImplicationChecksByTransitivity, 53.7s TimeCoverageRelationStatistics Valid=1218, Invalid=19942, Unknown=10, NotChecked=0, Total=21170 [2023-12-18 20:43:12,229 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 174 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 7246 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 7300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 7246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-18 20:43:12,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 2685 Invalid, 7300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 7246 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-18 20:43:12,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-18 20:43:12,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 218. [2023-12-18 20:43:12,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 173 states have (on average 1.0115606936416186) internal successors, (175), 173 states have internal predecessors, (175), 23 states have call successors, (23), 21 states have call predecessors, (23), 21 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-18 20:43:12,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 221 transitions. [2023-12-18 20:43:12,322 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 221 transitions. Word has length 222 [2023-12-18 20:43:12,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:43:12,322 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 221 transitions. [2023-12-18 20:43:12,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 2.2916666666666665) internal successors, (220), 93 states have internal predecessors, (220), 43 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (45), 45 states have call predecessors, (45), 43 states have call successors, (45) [2023-12-18 20:43:12,323 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 221 transitions. [2023-12-18 20:43:12,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-18 20:43:12,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:43:12,324 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 21, 21, 21, 21, 21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:43:12,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2023-12-18 20:43:12,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:43:12,524 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:43:12,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:43:12,524 INFO L85 PathProgramCache]: Analyzing trace with hash 672136753, now seen corresponding path program 58 times [2023-12-18 20:43:12,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:43:12,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693789950] [2023-12-18 20:43:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:43:12,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:43:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:43:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:43:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:43:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:43:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:43:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:43:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:43:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:43:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:43:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:43:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:43:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:43:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:43:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:43:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:43:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:43:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:43:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:43:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:43:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:43:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-18 20:43:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-18 20:43:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-18 20:43:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2273 backedges. 66 proven. 1321 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2023-12-18 20:43:14,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:43:14,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693789950] [2023-12-18 20:43:14,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693789950] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:43:14,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37063315] [2023-12-18 20:43:14,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 20:43:14,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:43:14,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:43:14,321 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:43:14,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-12-18 20:43:14,791 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 20:43:14,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:43:14,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 110 conjunts are in the unsatisfiable core [2023-12-18 20:43:14,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:43:16,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:43:17,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:43:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2273 backedges. 72 proven. 1369 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2023-12-18 20:43:18,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:43:18,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:43:18,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:43:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2273 backedges. 66 proven. 1321 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2023-12-18 20:43:18,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37063315] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:43:18,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:43:18,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 51, 50] total 99 [2023-12-18 20:43:18,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024456413] [2023-12-18 20:43:18,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:43:18,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-12-18 20:43:18,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:43:18,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-12-18 20:43:18,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=9302, Unknown=0, NotChecked=0, Total=9702 [2023-12-18 20:43:18,948 INFO L87 Difference]: Start difference. First operand 218 states and 221 transitions. Second operand has 99 states, 98 states have (on average 2.3469387755102042) internal successors, (230), 95 states have internal predecessors, (230), 44 states have call successors, (45), 1 states have call predecessors, (45), 2 states have return successors, (45), 45 states have call predecessors, (45), 44 states have call successors, (45) [2023-12-18 20:43:24,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:43:24,138 INFO L93 Difference]: Finished difference Result 300 states and 306 transitions. [2023-12-18 20:43:24,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-12-18 20:43:24,139 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 2.3469387755102042) internal successors, (230), 95 states have internal predecessors, (230), 44 states have call successors, (45), 1 states have call predecessors, (45), 2 states have return successors, (45), 45 states have call predecessors, (45), 44 states have call successors, (45) Word has length 225 [2023-12-18 20:43:24,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:43:24,140 INFO L225 Difference]: With dead ends: 300 [2023-12-18 20:43:24,140 INFO L226 Difference]: Without dead ends: 298 [2023-12-18 20:43:24,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 425 SyntacticMatches, 22 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8712 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1229, Invalid=26161, Unknown=0, NotChecked=0, Total=27390 [2023-12-18 20:43:24,142 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 287 mSDsluCounter, 2837 mSDsCounter, 0 mSdLazyCounter, 7132 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 7248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 7132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-18 20:43:24,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 2892 Invalid, 7248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 7132 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-18 20:43:24,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-12-18 20:43:24,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 225. [2023-12-18 20:43:24,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 179 states have (on average 1.0167597765363128) internal successors, (182), 179 states have internal predecessors, (182), 24 states have call successors, (24), 21 states have call predecessors, (24), 21 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-18 20:43:24,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 230 transitions. [2023-12-18 20:43:24,265 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 230 transitions. Word has length 225 [2023-12-18 20:43:24,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:43:24,265 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 230 transitions. [2023-12-18 20:43:24,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 2.3469387755102042) internal successors, (230), 95 states have internal predecessors, (230), 44 states have call successors, (45), 1 states have call predecessors, (45), 2 states have return successors, (45), 45 states have call predecessors, (45), 44 states have call successors, (45) [2023-12-18 20:43:24,265 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 230 transitions. [2023-12-18 20:43:24,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-18 20:43:24,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:43:24,266 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:43:24,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2023-12-18 20:43:24,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:43:24,475 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:43:24,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:43:24,475 INFO L85 PathProgramCache]: Analyzing trace with hash 494075476, now seen corresponding path program 59 times [2023-12-18 20:43:24,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:43:24,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301403340] [2023-12-18 20:43:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:43:24,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:43:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:43:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:43:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:43:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:43:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:43:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:43:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:43:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:43:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:43:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:43:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:43:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:43:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:43:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:43:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:43:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:43:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:43:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:43:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:43:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:43:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-18 20:43:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-18 20:43:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-18 20:43:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 611 proven. 712 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-18 20:43:25,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:43:25,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301403340] [2023-12-18 20:43:25,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301403340] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:43:25,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47615549] [2023-12-18 20:43:25,592 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 20:43:25,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:43:25,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:43:25,594 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:43:25,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-12-18 20:43:26,053 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-12-18 20:43:26,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:43:26,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-18 20:43:26,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:43:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 672 proven. 651 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-18 20:43:26,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:43:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 672 proven. 651 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-18 20:43:27,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47615549] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:43:27,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:43:27,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 71 [2023-12-18 20:43:27,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310698849] [2023-12-18 20:43:27,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:43:27,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-12-18 20:43:27,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:43:27,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-12-18 20:43:27,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3815, Unknown=0, NotChecked=0, Total=4970 [2023-12-18 20:43:27,731 INFO L87 Difference]: Start difference. First operand 225 states and 230 transitions. Second operand has 71 states, 71 states have (on average 2.647887323943662) internal successors, (188), 71 states have internal predecessors, (188), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2023-12-18 20:43:28,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:43:28,340 INFO L93 Difference]: Finished difference Result 304 states and 310 transitions. [2023-12-18 20:43:28,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-18 20:43:28,340 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.647887323943662) internal successors, (188), 71 states have internal predecessors, (188), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) Word has length 228 [2023-12-18 20:43:28,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:43:28,341 INFO L225 Difference]: With dead ends: 304 [2023-12-18 20:43:28,341 INFO L226 Difference]: Without dead ends: 234 [2023-12-18 20:43:28,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 435 SyntacticMatches, 43 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3952 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1980, Invalid=6576, Unknown=0, NotChecked=0, Total=8556 [2023-12-18 20:43:28,342 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 216 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 20:43:28,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 248 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 20:43:28,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-18 20:43:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 221. [2023-12-18 20:43:28,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 175 states have (on average 1.0114285714285713) internal successors, (177), 175 states have internal predecessors, (177), 24 states have call successors, (24), 21 states have call predecessors, (24), 21 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-18 20:43:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 225 transitions. [2023-12-18 20:43:28,436 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 225 transitions. Word has length 228 [2023-12-18 20:43:28,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:43:28,436 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 225 transitions. [2023-12-18 20:43:28,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.647887323943662) internal successors, (188), 71 states have internal predecessors, (188), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2023-12-18 20:43:28,436 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 225 transitions. [2023-12-18 20:43:28,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-18 20:43:28,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:43:28,437 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 22, 22, 22, 22, 21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:43:28,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2023-12-18 20:43:28,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:43:28,638 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:43:28,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:43:28,639 INFO L85 PathProgramCache]: Analyzing trace with hash 862759538, now seen corresponding path program 60 times [2023-12-18 20:43:28,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:43:28,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126960860] [2023-12-18 20:43:28,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:43:28,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:43:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:43:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:43:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:43:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:43:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:43:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:43:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:43:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:43:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:43:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:43:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:43:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:43:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:43:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:43:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:43:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:43:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:43:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:43:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:43:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:43:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-18 20:43:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-18 20:43:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-18 20:43:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-18 20:43:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:43:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 66 proven. 1391 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2023-12-18 20:43:30,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:43:30,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126960860] [2023-12-18 20:43:30,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126960860] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:43:30,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505002630] [2023-12-18 20:43:30,443 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 20:43:30,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:43:30,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:43:30,444 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:43:30,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-12-18 20:43:31,891 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2023-12-18 20:43:31,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:43:31,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 111 conjunts are in the unsatisfiable core [2023-12-18 20:43:31,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:43:33,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 20:43:33,552 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-12-18 20:43:33,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2023-12-18 20:43:35,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2023-12-18 20:43:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 152 proven. 1391 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2023-12-18 20:43:35,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:44:24,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505002630] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:44:24,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:44:24,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 53] total 101 [2023-12-18 20:44:24,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098167488] [2023-12-18 20:44:24,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:44:24,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2023-12-18 20:44:24,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:44:24,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2023-12-18 20:44:24,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=10227, Unknown=12, NotChecked=0, Total=10712 [2023-12-18 20:44:24,202 INFO L87 Difference]: Start difference. First operand 221 states and 225 transitions. Second operand has 101 states, 101 states have (on average 2.277227722772277) internal successors, (230), 97 states have internal predecessors, (230), 45 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (47), 47 states have call predecessors, (47), 45 states have call successors, (47) [2023-12-18 20:44:29,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:44:29,166 INFO L93 Difference]: Finished difference Result 236 states and 239 transitions. [2023-12-18 20:44:29,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-12-18 20:44:29,167 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.277227722772277) internal successors, (230), 97 states have internal predecessors, (230), 45 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (47), 47 states have call predecessors, (47), 45 states have call successors, (47) Word has length 232 [2023-12-18 20:44:29,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:44:29,168 INFO L225 Difference]: With dead ends: 236 [2023-12-18 20:44:29,168 INFO L226 Difference]: Without dead ends: 234 [2023-12-18 20:44:29,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 273 SyntacticMatches, 23 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7858 ImplicationChecksByTransitivity, 54.2s TimeCoverageRelationStatistics Valid=1305, Invalid=22245, Unknown=12, NotChecked=0, Total=23562 [2023-12-18 20:44:29,170 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 137 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 7855 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 7912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 7855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-18 20:44:29,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 2931 Invalid, 7912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 7855 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-18 20:44:29,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-18 20:44:29,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 228. [2023-12-18 20:44:29,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 181 states have (on average 1.011049723756906) internal successors, (183), 181 states have internal predecessors, (183), 24 states have call successors, (24), 22 states have call predecessors, (24), 22 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-18 20:44:29,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 231 transitions. [2023-12-18 20:44:29,302 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 231 transitions. Word has length 232 [2023-12-18 20:44:29,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:44:29,302 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 231 transitions. [2023-12-18 20:44:29,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.277227722772277) internal successors, (230), 97 states have internal predecessors, (230), 45 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (47), 47 states have call predecessors, (47), 45 states have call successors, (47) [2023-12-18 20:44:29,302 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 231 transitions. [2023-12-18 20:44:29,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-18 20:44:29,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:44:29,304 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 22, 22, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:44:29,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-12-18 20:44:29,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:44:29,513 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:44:29,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:44:29,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1390698099, now seen corresponding path program 61 times [2023-12-18 20:44:29,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:44:29,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312480155] [2023-12-18 20:44:29,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:44:29,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:44:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:44:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:44:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:44:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:44:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:44:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:44:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:44:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:44:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:44:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:44:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:44:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:44:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:44:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:44:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:44:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:44:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:44:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:44:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:44:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:44:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-18 20:44:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-18 20:44:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-18 20:44:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-18 20:44:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2491 backedges. 69 proven. 1450 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2023-12-18 20:44:31,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:44:31,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312480155] [2023-12-18 20:44:31,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312480155] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:44:31,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970948857] [2023-12-18 20:44:31,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 20:44:31,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:44:31,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:44:31,501 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:44:31,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-12-18 20:44:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:31,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 114 conjunts are in the unsatisfiable core [2023-12-18 20:44:31,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:44:33,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:44:35,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:44:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2491 backedges. 111 proven. 1465 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2023-12-18 20:44:35,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:44:35,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:44:35,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:44:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2491 backedges. 69 proven. 1450 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2023-12-18 20:44:36,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970948857] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:44:36,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:44:36,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 52] total 105 [2023-12-18 20:44:36,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644024739] [2023-12-18 20:44:36,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:44:36,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2023-12-18 20:44:36,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:44:36,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2023-12-18 20:44:36,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=426, Invalid=10494, Unknown=0, NotChecked=0, Total=10920 [2023-12-18 20:44:36,295 INFO L87 Difference]: Start difference. First operand 228 states and 231 transitions. Second operand has 105 states, 103 states have (on average 2.349514563106796) internal successors, (242), 100 states have internal predecessors, (242), 47 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-18 20:44:42,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:44:42,183 INFO L93 Difference]: Finished difference Result 313 states and 319 transitions. [2023-12-18 20:44:42,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-18 20:44:42,183 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 103 states have (on average 2.349514563106796) internal successors, (242), 100 states have internal predecessors, (242), 47 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 47 states have call successors, (48) Word has length 235 [2023-12-18 20:44:42,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:44:42,184 INFO L225 Difference]: With dead ends: 313 [2023-12-18 20:44:42,184 INFO L226 Difference]: Without dead ends: 311 [2023-12-18 20:44:42,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 443 SyntacticMatches, 23 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9709 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1296, Invalid=29154, Unknown=0, NotChecked=0, Total=30450 [2023-12-18 20:44:42,186 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 452 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 8398 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 8514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 8398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-18 20:44:42,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 2856 Invalid, 8514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 8398 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-18 20:44:42,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-18 20:44:42,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 235. [2023-12-18 20:44:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 187 states have (on average 1.0160427807486632) internal successors, (190), 187 states have internal predecessors, (190), 25 states have call successors, (25), 22 states have call predecessors, (25), 22 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-18 20:44:42,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 240 transitions. [2023-12-18 20:44:42,307 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 240 transitions. Word has length 235 [2023-12-18 20:44:42,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:44:42,307 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 240 transitions. [2023-12-18 20:44:42,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 103 states have (on average 2.349514563106796) internal successors, (242), 100 states have internal predecessors, (242), 47 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-18 20:44:42,307 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 240 transitions. [2023-12-18 20:44:42,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-18 20:44:42,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:44:42,309 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:44:42,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2023-12-18 20:44:42,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-12-18 20:44:42,517 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:44:42,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:44:42,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1038130898, now seen corresponding path program 62 times [2023-12-18 20:44:42,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:44:42,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796037484] [2023-12-18 20:44:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:44:42,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:44:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:44:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:44:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:44:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:44:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:44:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:44:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:44:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:44:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:44:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:44:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:44:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:44:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:44:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:44:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:44:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:44:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:44:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:44:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:44:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:44:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-18 20:44:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-18 20:44:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-18 20:44:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-18 20:44:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 673 proven. 779 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-18 20:44:43,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:44:43,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796037484] [2023-12-18 20:44:43,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796037484] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:44:43,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688832884] [2023-12-18 20:44:43,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 20:44:43,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:44:43,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:44:43,691 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:44:43,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-12-18 20:44:43,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 20:44:43,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:44:43,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-18 20:44:43,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:44:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 737 proven. 715 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-18 20:44:44,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:44:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 737 proven. 715 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-18 20:44:45,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688832884] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:44:45,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:44:45,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 74 [2023-12-18 20:44:45,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833632183] [2023-12-18 20:44:45,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:44:45,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-18 20:44:45,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:44:45,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-18 20:44:45,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1253, Invalid=4149, Unknown=0, NotChecked=0, Total=5402 [2023-12-18 20:44:45,797 INFO L87 Difference]: Start difference. First operand 235 states and 240 transitions. Second operand has 74 states, 74 states have (on average 2.6486486486486487) internal successors, (196), 74 states have internal predecessors, (196), 24 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 24 states have call predecessors, (25), 24 states have call successors, (25) [2023-12-18 20:44:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:44:46,677 INFO L93 Difference]: Finished difference Result 317 states and 323 transitions. [2023-12-18 20:44:46,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-18 20:44:46,678 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.6486486486486487) internal successors, (196), 74 states have internal predecessors, (196), 24 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 24 states have call predecessors, (25), 24 states have call successors, (25) Word has length 238 [2023-12-18 20:44:46,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:44:46,679 INFO L225 Difference]: With dead ends: 317 [2023-12-18 20:44:46,679 INFO L226 Difference]: Without dead ends: 244 [2023-12-18 20:44:46,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 454 SyntacticMatches, 45 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4305 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2150, Invalid=7162, Unknown=0, NotChecked=0, Total=9312 [2023-12-18 20:44:46,680 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 284 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 20:44:46,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 277 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 20:44:46,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-12-18 20:44:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 231. [2023-12-18 20:44:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 183 states have (on average 1.010928961748634) internal successors, (185), 183 states have internal predecessors, (185), 25 states have call successors, (25), 22 states have call predecessors, (25), 22 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-18 20:44:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 235 transitions. [2023-12-18 20:44:46,790 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 235 transitions. Word has length 238 [2023-12-18 20:44:46,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:44:46,790 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 235 transitions. [2023-12-18 20:44:46,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.6486486486486487) internal successors, (196), 74 states have internal predecessors, (196), 24 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 24 states have call predecessors, (25), 24 states have call successors, (25) [2023-12-18 20:44:46,790 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 235 transitions. [2023-12-18 20:44:46,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-18 20:44:46,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:44:46,791 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 23, 23, 23, 23, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:44:46,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2023-12-18 20:44:46,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:44:46,992 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:44:46,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:44:46,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1365994868, now seen corresponding path program 63 times [2023-12-18 20:44:46,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:44:46,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858327918] [2023-12-18 20:44:46,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:44:46,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:44:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:44:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:44:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:44:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:44:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:44:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:44:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:44:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:44:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:44:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:44:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:44:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:44:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:44:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:44:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:44:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:44:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:44:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:44:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:44:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:44:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-18 20:44:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-18 20:44:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-18 20:44:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-18 20:44:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-18 20:44:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:44:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2654 backedges. 69 proven. 1523 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2023-12-18 20:44:48,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:44:48,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858327918] [2023-12-18 20:44:48,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858327918] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:44:48,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238976851] [2023-12-18 20:44:48,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 20:44:48,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:44:48,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:44:48,952 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:44:48,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-12-18 20:44:51,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2023-12-18 20:44:51,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:44:51,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 110 conjunts are in the unsatisfiable core [2023-12-18 20:44:51,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:44:53,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 20:44:53,754 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-12-18 20:44:53,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 16 [2023-12-18 20:44:55,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2023-12-18 20:44:55,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2654 backedges. 159 proven. 1523 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2023-12-18 20:44:55,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:45:00,165 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (< 23 (select (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~i~0#1|)) (+ 88 |c_ULTIMATE.start_main_~#a~0#1.offset|)))) is different from false [2023-12-18 20:45:00,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238976851] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:45:00,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 20:45:00,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 104 [2023-12-18 20:45:00,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894558863] [2023-12-18 20:45:00,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 20:45:00,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2023-12-18 20:45:00,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:45:00,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2023-12-18 20:45:00,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=10471, Unknown=1, NotChecked=206, Total=11130 [2023-12-18 20:45:00,173 INFO L87 Difference]: Start difference. First operand 231 states and 235 transitions. Second operand has 104 states, 104 states have (on average 2.3076923076923075) internal successors, (240), 100 states have internal predecessors, (240), 47 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (49), 49 states have call predecessors, (49), 47 states have call successors, (49) [2023-12-18 20:45:05,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:45:05,236 INFO L93 Difference]: Finished difference Result 246 states and 249 transitions. [2023-12-18 20:45:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-18 20:45:05,236 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.3076923076923075) internal successors, (240), 100 states have internal predecessors, (240), 47 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (49), 49 states have call predecessors, (49), 47 states have call successors, (49) Word has length 242 [2023-12-18 20:45:05,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:45:05,237 INFO L225 Difference]: With dead ends: 246 [2023-12-18 20:45:05,237 INFO L226 Difference]: Without dead ends: 244 [2023-12-18 20:45:05,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 288 SyntacticMatches, 23 SemanticMatches, 155 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8005 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=1252, Invalid=22931, Unknown=1, NotChecked=308, Total=24492 [2023-12-18 20:45:05,239 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 158 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 7954 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 8017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 7954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-18 20:45:05,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 2913 Invalid, 8017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 7954 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-18 20:45:05,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-12-18 20:45:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 238. [2023-12-18 20:45:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 189 states have (on average 1.0105820105820107) internal successors, (191), 189 states have internal predecessors, (191), 25 states have call successors, (25), 23 states have call predecessors, (25), 23 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-18 20:45:05,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 241 transitions. [2023-12-18 20:45:05,335 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 241 transitions. Word has length 242 [2023-12-18 20:45:05,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:45:05,336 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 241 transitions. [2023-12-18 20:45:05,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.3076923076923075) internal successors, (240), 100 states have internal predecessors, (240), 47 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (49), 49 states have call predecessors, (49), 47 states have call successors, (49) [2023-12-18 20:45:05,336 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 241 transitions. [2023-12-18 20:45:05,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-18 20:45:05,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:45:05,337 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 23, 23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:45:05,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2023-12-18 20:45:05,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2023-12-18 20:45:05,538 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:45:05,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:45:05,538 INFO L85 PathProgramCache]: Analyzing trace with hash -456416207, now seen corresponding path program 64 times [2023-12-18 20:45:05,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:45:05,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823751027] [2023-12-18 20:45:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:45:05,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:45:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:45:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:45:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:45:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:45:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:45:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:45:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:45:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:45:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:45:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:45:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:45:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:45:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:45:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:45:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:45:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:45:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:45:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:45:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:45:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:45:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-18 20:45:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-18 20:45:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-18 20:45:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-18 20:45:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-18 20:45:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2719 backedges. 72 proven. 1585 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2023-12-18 20:45:07,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:45:07,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823751027] [2023-12-18 20:45:07,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823751027] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:45:07,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120003268] [2023-12-18 20:45:07,552 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 20:45:07,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:45:07,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:45:07,553 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:45:07,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-12-18 20:45:08,206 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 20:45:08,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:45:08,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 118 conjunts are in the unsatisfiable core [2023-12-18 20:45:08,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:45:10,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 20:45:12,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-18 20:45:12,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2719 backedges. 72 proven. 1585 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2023-12-18 20:45:12,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:45:12,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 20:45:12,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-18 20:45:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2719 backedges. 72 proven. 1585 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2023-12-18 20:45:13,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120003268] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:45:13,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:45:13,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 56, 55] total 111 [2023-12-18 20:45:13,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853107797] [2023-12-18 20:45:13,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:45:13,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2023-12-18 20:45:13,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:45:13,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2023-12-18 20:45:13,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=11753, Unknown=0, NotChecked=0, Total=12210 [2023-12-18 20:45:13,337 INFO L87 Difference]: Start difference. First operand 238 states and 241 transitions. Second operand has 111 states, 109 states have (on average 2.311926605504587) internal successors, (252), 106 states have internal predecessors, (252), 49 states have call successors, (50), 1 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-18 20:45:19,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:45:19,979 INFO L93 Difference]: Finished difference Result 326 states and 332 transitions. [2023-12-18 20:45:19,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-18 20:45:19,980 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 109 states have (on average 2.311926605504587) internal successors, (252), 106 states have internal predecessors, (252), 49 states have call successors, (50), 1 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 49 states have call successors, (50) Word has length 245 [2023-12-18 20:45:19,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:45:19,981 INFO L225 Difference]: With dead ends: 326 [2023-12-18 20:45:19,981 INFO L226 Difference]: Without dead ends: 324 [2023-12-18 20:45:19,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 460 SyntacticMatches, 24 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11294 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1418, Invalid=33738, Unknown=0, NotChecked=0, Total=35156 [2023-12-18 20:45:19,983 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 465 mSDsluCounter, 2906 mSDsCounter, 0 mSdLazyCounter, 9156 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 9284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 9156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-18 20:45:19,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 2964 Invalid, 9284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 9156 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-18 20:45:19,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-18 20:45:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 245. [2023-12-18 20:45:20,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 195 states have (on average 1.0153846153846153) internal successors, (198), 195 states have internal predecessors, (198), 26 states have call successors, (26), 23 states have call predecessors, (26), 23 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-18 20:45:20,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 250 transitions. [2023-12-18 20:45:20,114 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 250 transitions. Word has length 245 [2023-12-18 20:45:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:45:20,114 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 250 transitions. [2023-12-18 20:45:20,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 109 states have (on average 2.311926605504587) internal successors, (252), 106 states have internal predecessors, (252), 49 states have call successors, (50), 1 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-18 20:45:20,114 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 250 transitions. [2023-12-18 20:45:20,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-18 20:45:20,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:45:20,115 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:45:20,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-12-18 20:45:20,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-12-18 20:45:20,324 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:45:20,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:45:20,324 INFO L85 PathProgramCache]: Analyzing trace with hash 776837204, now seen corresponding path program 65 times [2023-12-18 20:45:20,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:45:20,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003025493] [2023-12-18 20:45:20,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:45:20,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:45:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:45:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:45:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:45:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:45:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:45:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:45:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:45:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:45:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:45:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:45:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:45:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:45:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:45:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:45:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:45:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:45:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:45:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:45:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:45:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:45:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-18 20:45:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-18 20:45:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-18 20:45:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-18 20:45:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-18 20:45:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:21,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2787 backedges. 738 proven. 849 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-18 20:45:21,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:45:21,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003025493] [2023-12-18 20:45:21,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003025493] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:45:21,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37520980] [2023-12-18 20:45:21,582 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 20:45:21,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:45:21,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:45:21,585 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:45:21,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-12-18 20:45:22,356 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2023-12-18 20:45:22,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 20:45:22,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-18 20:45:22,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 20:45:23,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2787 backedges. 805 proven. 782 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-18 20:45:23,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 20:45:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2787 backedges. 805 proven. 782 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-18 20:45:24,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37520980] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 20:45:24,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 20:45:24,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 77 [2023-12-18 20:45:24,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423251421] [2023-12-18 20:45:24,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 20:45:24,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-18 20:45:24,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:45:24,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-18 20:45:24,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1355, Invalid=4497, Unknown=0, NotChecked=0, Total=5852 [2023-12-18 20:45:24,408 INFO L87 Difference]: Start difference. First operand 245 states and 250 transitions. Second operand has 77 states, 77 states have (on average 2.6493506493506493) internal successors, (204), 77 states have internal predecessors, (204), 25 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2023-12-18 20:45:25,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 20:45:25,116 INFO L93 Difference]: Finished difference Result 330 states and 336 transitions. [2023-12-18 20:45:25,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-18 20:45:25,116 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.6493506493506493) internal successors, (204), 77 states have internal predecessors, (204), 25 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) Word has length 248 [2023-12-18 20:45:25,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 20:45:25,117 INFO L225 Difference]: With dead ends: 330 [2023-12-18 20:45:25,117 INFO L226 Difference]: Without dead ends: 254 [2023-12-18 20:45:25,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 473 SyntacticMatches, 47 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4673 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2327, Invalid=7773, Unknown=0, NotChecked=0, Total=10100 [2023-12-18 20:45:25,118 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 224 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 20:45:25,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 301 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 20:45:25,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-12-18 20:45:25,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 241. [2023-12-18 20:45:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 191 states have (on average 1.0104712041884816) internal successors, (193), 191 states have internal predecessors, (193), 26 states have call successors, (26), 23 states have call predecessors, (26), 23 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-18 20:45:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 245 transitions. [2023-12-18 20:45:25,231 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 245 transitions. Word has length 248 [2023-12-18 20:45:25,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 20:45:25,232 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 245 transitions. [2023-12-18 20:45:25,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.6493506493506493) internal successors, (204), 77 states have internal predecessors, (204), 25 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2023-12-18 20:45:25,232 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 245 transitions. [2023-12-18 20:45:25,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-18 20:45:25,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 20:45:25,233 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 24, 24, 24, 24, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 20:45:25,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2023-12-18 20:45:25,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-12-18 20:45:25,443 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 20:45:25,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 20:45:25,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1578064398, now seen corresponding path program 66 times [2023-12-18 20:45:25,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 20:45:25,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726588105] [2023-12-18 20:45:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 20:45:25,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 20:45:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-18 20:45:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-18 20:45:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-18 20:45:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 20:45:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-18 20:45:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-18 20:45:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-18 20:45:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-18 20:45:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-18 20:45:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-18 20:45:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-18 20:45:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 20:45:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-18 20:45:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 20:45:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-18 20:45:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 20:45:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-18 20:45:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-18 20:45:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-18 20:45:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-18 20:45:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-18 20:45:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-18 20:45:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-18 20:45:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-18 20:45:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-18 20:45:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-18 20:45:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 20:45:27,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2889 backedges. 72 proven. 1661 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2023-12-18 20:45:27,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 20:45:27,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726588105] [2023-12-18 20:45:27,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726588105] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 20:45:27,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128726179] [2023-12-18 20:45:27,677 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 20:45:27,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 20:45:27,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 20:45:27,681 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 20:45:27,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process Received shutdown request... [2023-12-18 20:45:27,799 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 20:45:27,805 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 20:45:28,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 20:45:28,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-18 20:45:28,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2023-12-18 20:45:28,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992803242] [2023-12-18 20:45:28,822 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-18 20:45:28,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-18 20:45:28,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 20:45:28,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-18 20:45:28,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=3051, Unknown=0, NotChecked=0, Total=3192 [2023-12-18 20:45:28,824 INFO L87 Difference]: Start difference. First operand 241 states and 245 transitions. Second operand has 57 states, 56 states have (on average 2.2857142857142856) internal successors, (128), 55 states have internal predecessors, (128), 25 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 25 states have call successors, (26) [2023-12-18 20:45:28,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 20:45:28,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=141, Invalid=3051, Unknown=0, NotChecked=0, Total=3192 [2023-12-18 20:45:28,826 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 20:45:28,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 20:45:28,827 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-18 20:45:28,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2023-12-18 20:45:29,000 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-18 20:45:29,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-18 20:45:29,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-12-18 20:45:29,028 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (241states) and FLOYD_HOARE automaton (currently 2 states, 57 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-18 20:45:29,033 INFO L445 BasicCegarLoop]: Path program histogram: [66, 2, 1, 1] [2023-12-18 20:45:29,034 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 20:45:29,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 08:45:29 BoogieIcfgContainer [2023-12-18 20:45:29,036 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 20:45:29,036 INFO L158 Benchmark]: Toolchain (without parser) took 817769.69ms. Allocated memory was 232.8MB in the beginning and 404.8MB in the end (delta: 172.0MB). Free memory was 181.2MB in the beginning and 283.4MB in the end (delta: -102.2MB). Peak memory consumption was 71.9MB. Max. memory is 8.0GB. [2023-12-18 20:45:29,036 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 185.6MB. Free memory is still 136.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 20:45:29,036 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.49ms. Allocated memory is still 232.8MB. Free memory was 180.7MB in the beginning and 170.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-18 20:45:29,036 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.58ms. Allocated memory is still 232.8MB. Free memory was 169.7MB in the beginning and 168.6MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-18 20:45:29,036 INFO L158 Benchmark]: Boogie Preprocessor took 28.92ms. Allocated memory is still 232.8MB. Free memory was 168.6MB in the beginning and 166.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 20:45:29,036 INFO L158 Benchmark]: RCFGBuilder took 260.41ms. Allocated memory is still 232.8MB. Free memory was 166.5MB in the beginning and 153.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-18 20:45:29,036 INFO L158 Benchmark]: TraceAbstraction took 817242.55ms. Allocated memory was 232.8MB in the beginning and 404.8MB in the end (delta: 172.0MB). Free memory was 153.4MB in the beginning and 283.4MB in the end (delta: -130.0MB). Peak memory consumption was 44.6MB. Max. memory is 8.0GB. [2023-12-18 20:45:29,037 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 185.6MB. Free memory is still 136.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 207.49ms. Allocated memory is still 232.8MB. Free memory was 180.7MB in the beginning and 170.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.58ms. Allocated memory is still 232.8MB. Free memory was 169.7MB in the beginning and 168.6MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.92ms. Allocated memory is still 232.8MB. Free memory was 168.6MB in the beginning and 166.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 260.41ms. Allocated memory is still 232.8MB. Free memory was 166.5MB in the beginning and 153.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 817242.55ms. Allocated memory was 232.8MB in the beginning and 404.8MB in the end (delta: 172.0MB). Free memory was 153.4MB in the beginning and 283.4MB in the end (delta: -130.0MB). Peak memory consumption was 44.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 8). Cancelled while NwaCegarLoop was constructing difference of abstraction (241states) and FLOYD_HOARE automaton (currently 2 states, 57 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 817.2s, OverallIterations: 70, TraceHistogramMax: 26, PathProgramHistogramMax: 66, EmptinessCheckTime: 0.1s, AutomataDifference: 156.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 11527 SdHoareTripleChecker+Valid, 97.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11482 mSDsluCounter, 59566 SdHoareTripleChecker+Invalid, 87.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57359 mSDsCounter, 4017 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 157627 IncrementalHoareTripleChecker+Invalid, 161653 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4017 mSolverCounterUnsat, 2207 mSDtfsCounter, 157627 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22352 GetRequests, 15423 SyntacticMatches, 1108 SemanticMatches, 5821 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 211744 ImplicationChecksByTransitivity, 602.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=245occurred in iteration=68, InterpolantAutomatonStates: 3152, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 69 MinimizatonAttempts, 1552 StatesRemovedByMinimization, 68 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 19.2s SatisfiabilityAnalysisTime, 614.2s InterpolantComputationTime, 18798 NumberOfCodeBlocks, 18798 NumberOfCodeBlocksAsserted, 608 NumberOfCheckSat, 24857 ConstructedInterpolants, 99 QuantifiedInterpolants, 147364 SizeOfPredicates, 709 NumberOfNonLiveVariables, 27120 ConjunctsInSsa, 3881 ConjunctsInUnsatCore, 182 InterpolantComputations, 2 PerfectInterpolantSequences, 99023/184208 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown