/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-tiling/rewnifrev.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 08:01:56,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 08:01:56,206 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 08:01:56,214 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 08:01:56,214 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 08:01:56,241 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 08:01:56,241 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 08:01:56,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 08:01:56,242 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 08:01:56,242 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 08:01:56,242 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 08:01:56,242 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 08:01:56,243 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 08:01:56,243 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 08:01:56,243 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 08:01:56,243 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 08:01:56,244 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 08:01:56,244 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 08:01:56,244 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 08:01:56,244 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 08:01:56,245 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 08:01:56,248 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 08:01:56,248 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 08:01:56,248 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 08:01:56,252 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 08:01:56,252 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 08:01:56,252 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 08:01:56,252 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 08:01:56,253 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 08:01:56,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 08:01:56,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 08:01:56,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 08:01:56,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 08:01:56,254 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 08:01:56,254 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 08:01:56,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 08:01:56,254 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 08:01:56,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 08:01:56,254 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 08:01:56,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 08:01:56,255 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 08:01:56,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 08:01:56,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 08:01:56,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 08:01:56,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 08:01:56,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 08:01:56,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 08:01:56,465 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 08:01:56,469 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 08:01:56,470 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewnifrev.c [2023-12-20 08:01:57,601 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 08:01:57,728 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 08:01:57,729 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/rewnifrev.c [2023-12-20 08:01:57,734 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb46576a1/026cbf6075dd4d58870a812e4c8ebc5d/FLAGbcf05e171 [2023-12-20 08:01:57,742 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb46576a1/026cbf6075dd4d58870a812e4c8ebc5d [2023-12-20 08:01:57,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 08:01:57,745 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 08:01:57,746 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 08:01:57,746 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 08:01:57,749 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 08:01:57,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:01:57" (1/1) ... [2023-12-20 08:01:57,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d7211c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:01:57, skipping insertion in model container [2023-12-20 08:01:57,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:01:57" (1/1) ... [2023-12-20 08:01:57,763 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 08:01:57,868 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-tiling/rewnifrev.c[400,413] [2023-12-20 08:01:57,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 08:01:57,896 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 08:01:57,905 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-tiling/rewnifrev.c[400,413] [2023-12-20 08:01:57,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 08:01:57,926 INFO L206 MainTranslator]: Completed translation [2023-12-20 08:01:57,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:01:57 WrapperNode [2023-12-20 08:01:57,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 08:01:57,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 08:01:57,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 08:01:57,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 08:01:57,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:01:57" (1/1) ... [2023-12-20 08:01:57,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:01:57" (1/1) ... [2023-12-20 08:01:57,958 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2023-12-20 08:01:57,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 08:01:57,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 08:01:57,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 08:01:57,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 08:01:57,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:01:57" (1/1) ... [2023-12-20 08:01:57,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:01:57" (1/1) ... [2023-12-20 08:01:57,975 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:01:57" (1/1) ... [2023-12-20 08:01:57,990 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2023-12-20 08:01:57,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:01:57" (1/1) ... [2023-12-20 08:01:57,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:01:57" (1/1) ... [2023-12-20 08:01:57,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:01:57" (1/1) ... [2023-12-20 08:01:58,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:01:57" (1/1) ... [2023-12-20 08:01:58,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:01:57" (1/1) ... [2023-12-20 08:01:58,007 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:01:57" (1/1) ... [2023-12-20 08:01:58,010 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 08:01:58,011 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 08:01:58,011 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 08:01:58,011 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 08:01:58,012 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:01:57" (1/1) ... [2023-12-20 08:01:58,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 08:01:58,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:01:58,049 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) [2023-12-20 08:01:58,057 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 [2023-12-20 08:01:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 08:01:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 08:01:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 08:01:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 08:01:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 08:01:58,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-20 08:01:58,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 08:01:58,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 08:01:58,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 08:01:58,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 08:01:58,144 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 08:01:58,147 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 08:01:58,304 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 08:01:58,323 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 08:01:58,324 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 08:01:58,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:01:58 BoogieIcfgContainer [2023-12-20 08:01:58,324 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 08:01:58,326 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 08:01:58,326 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 08:01:58,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 08:01:58,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 08:01:57" (1/3) ... [2023-12-20 08:01:58,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c5308e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:01:58, skipping insertion in model container [2023-12-20 08:01:58,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:01:57" (2/3) ... [2023-12-20 08:01:58,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c5308e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:01:58, skipping insertion in model container [2023-12-20 08:01:58,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:01:58" (3/3) ... [2023-12-20 08:01:58,332 INFO L112 eAbstractionObserver]: Analyzing ICFG rewnifrev.c [2023-12-20 08:01:58,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 08:01:58,346 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 08:01:58,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 08:01:58,395 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;@20066659, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 08:01:58,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 08:01:58,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:01:58,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-20 08:01:58,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:01:58,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:01:58,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:01:58,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:01:58,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1562928649, now seen corresponding path program 1 times [2023-12-20 08:01:58,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:01:58,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237271132] [2023-12-20 08:01:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:01:58,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:01:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:01:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:01:58,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:01:58,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237271132] [2023-12-20 08:01:58,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237271132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 08:01:58,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 08:01:58,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 08:01:58,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874532226] [2023-12-20 08:01:58,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 08:01:58,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 08:01:58,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:01:58,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 08:01:58,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 08:01:58,552 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:01:58,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:01:58,567 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2023-12-20 08:01:58,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 08:01:58,570 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-20 08:01:58,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:01:58,574 INFO L225 Difference]: With dead ends: 23 [2023-12-20 08:01:58,574 INFO L226 Difference]: Without dead ends: 11 [2023-12-20 08:01:58,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 08:01:58,581 INFO L413 NwaCegarLoop]: 13 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, 13 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 [2023-12-20 08:01:58,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 08:01:58,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-20 08:01:58,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-20 08:01:58,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:01:58,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-12-20 08:01:58,604 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2023-12-20 08:01:58,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:01:58,604 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-12-20 08:01:58,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:01:58,605 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-12-20 08:01:58,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-20 08:01:58,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:01:58,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:01:58,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 08:01:58,606 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:01:58,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:01:58,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1574934422, now seen corresponding path program 1 times [2023-12-20 08:01:58,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:01:58,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941993778] [2023-12-20 08:01:58,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:01:58,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:01:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:01:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:01:58,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:01:58,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941993778] [2023-12-20 08:01:58,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941993778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 08:01:58,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 08:01:58,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 08:01:58,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880709400] [2023-12-20 08:01:58,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 08:01:58,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 08:01:58,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:01:58,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 08:01:58,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 08:01:58,676 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:01:58,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:01:58,693 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-12-20 08:01:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 08:01:58,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-20 08:01:58,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:01:58,693 INFO L225 Difference]: With dead ends: 23 [2023-12-20 08:01:58,693 INFO L226 Difference]: Without dead ends: 14 [2023-12-20 08:01:58,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 08:01:58,695 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:01:58,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 08:01:58,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-20 08:01:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-12-20 08:01:58,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:01:58,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-12-20 08:01:58,698 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2023-12-20 08:01:58,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:01:58,698 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-12-20 08:01:58,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:01:58,698 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-12-20 08:01:58,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-20 08:01:58,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:01:58,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:01:58,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 08:01:58,699 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:01:58,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:01:58,699 INFO L85 PathProgramCache]: Analyzing trace with hash -994451034, now seen corresponding path program 1 times [2023-12-20 08:01:58,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:01:58,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724618060] [2023-12-20 08:01:58,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:01:58,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:01:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:01:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:01:58,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:01:58,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724618060] [2023-12-20 08:01:58,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724618060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 08:01:58,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 08:01:58,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 08:01:58,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955728025] [2023-12-20 08:01:58,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 08:01:58,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 08:01:58,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:01:58,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 08:01:58,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 08:01:58,756 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:01:58,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:01:58,783 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2023-12-20 08:01:58,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 08:01:58,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-20 08:01:58,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:01:58,783 INFO L225 Difference]: With dead ends: 26 [2023-12-20 08:01:58,783 INFO L226 Difference]: Without dead ends: 20 [2023-12-20 08:01:58,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 08:01:58,785 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:01:58,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 12 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 08:01:58,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-20 08:01:58,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2023-12-20 08:01:58,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:01:58,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-12-20 08:01:58,788 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2023-12-20 08:01:58,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:01:58,788 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-12-20 08:01:58,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:01:58,788 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-12-20 08:01:58,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-20 08:01:58,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:01:58,789 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:01:58,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 08:01:58,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:01:58,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:01:58,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1872132756, now seen corresponding path program 1 times [2023-12-20 08:01:58,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:01:58,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183472947] [2023-12-20 08:01:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:01:58,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:01:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:01:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 08:01:59,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:01:59,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183472947] [2023-12-20 08:01:59,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183472947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 08:01:59,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 08:01:59,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 08:01:59,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532194540] [2023-12-20 08:01:59,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 08:01:59,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 08:01:59,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:01:59,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 08:01:59,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-20 08:01:59,068 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:01:59,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:01:59,128 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2023-12-20 08:01:59,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 08:01:59,129 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-20 08:01:59,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:01:59,129 INFO L225 Difference]: With dead ends: 22 [2023-12-20 08:01:59,129 INFO L226 Difference]: Without dead ends: 20 [2023-12-20 08:01:59,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2023-12-20 08:01:59,130 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 28 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:01:59,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 14 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 08:01:59,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-20 08:01:59,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2023-12-20 08:01:59,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:01:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-12-20 08:01:59,134 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2023-12-20 08:01:59,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:01:59,134 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-12-20 08:01:59,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:01:59,134 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-12-20 08:01:59,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-20 08:01:59,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:01:59,135 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:01:59,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 08:01:59,135 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:01:59,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:01:59,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1743708518, now seen corresponding path program 1 times [2023-12-20 08:01:59,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:01:59,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882569358] [2023-12-20 08:01:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:01:59,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:01:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:01:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:01:59,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:01:59,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882569358] [2023-12-20 08:01:59,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882569358] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:01:59,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982730817] [2023-12-20 08:01:59,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:01:59,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:01:59,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:01:59,442 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) [2023-12-20 08:01:59,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 08:01:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:01:59,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 08:01:59,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:01:59,585 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 13 treesize of output 9 [2023-12-20 08:01:59,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:01:59,679 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 23 treesize of output 22 [2023-12-20 08:02:00,002 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-20 08:02:00,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:00,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:00,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 13 [2023-12-20 08:02:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:00,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:00,132 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 16 treesize of output 14 [2023-12-20 08:02:00,135 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 20 treesize of output 16 [2023-12-20 08:02:00,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:00,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982730817] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:00,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:00,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 25 [2023-12-20 08:02:00,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533402304] [2023-12-20 08:02:00,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:00,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-20 08:02:00,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:00,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-20 08:02:00,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2023-12-20 08:02:00,140 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:00,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:00,444 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2023-12-20 08:02:00,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 08:02:00,444 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-20 08:02:00,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:00,445 INFO L225 Difference]: With dead ends: 26 [2023-12-20 08:02:00,445 INFO L226 Difference]: Without dead ends: 24 [2023-12-20 08:02:00,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=280, Invalid=776, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 08:02:00,446 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 38 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:00,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 15 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:02:00,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-20 08:02:00,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2023-12-20 08:02:00,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:00,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2023-12-20 08:02:00,450 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2023-12-20 08:02:00,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:00,450 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2023-12-20 08:02:00,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:00,450 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-12-20 08:02:00,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-20 08:02:00,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:00,451 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:00,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 08:02:00,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:00,658 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:00,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:00,659 INFO L85 PathProgramCache]: Analyzing trace with hash -803648724, now seen corresponding path program 2 times [2023-12-20 08:02:00,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:00,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129790153] [2023-12-20 08:02:00,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:00,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:00,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:00,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129790153] [2023-12-20 08:02:00,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129790153] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:00,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496782583] [2023-12-20 08:02:00,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 08:02:00,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:00,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:00,733 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) [2023-12-20 08:02:00,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 08:02:00,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 08:02:00,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:00,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 08:02:00,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:00,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:00,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496782583] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:00,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:00,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 12 [2023-12-20 08:02:00,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539588691] [2023-12-20 08:02:00,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:00,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 08:02:00,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:00,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 08:02:00,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2023-12-20 08:02:00,879 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:00,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:00,932 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2023-12-20 08:02:00,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 08:02:00,932 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-20 08:02:00,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:00,933 INFO L225 Difference]: With dead ends: 43 [2023-12-20 08:02:00,933 INFO L226 Difference]: Without dead ends: 24 [2023-12-20 08:02:00,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2023-12-20 08:02:00,936 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:00,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 27 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 08:02:00,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-20 08:02:00,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-12-20 08:02:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:00,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-12-20 08:02:00,948 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2023-12-20 08:02:00,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:00,948 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-12-20 08:02:00,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:00,948 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-12-20 08:02:00,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-20 08:02:00,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:00,949 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:00,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 08:02:01,154 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,SelfDestructingSolverStorable5 [2023-12-20 08:02:01,154 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:01,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:01,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1443181976, now seen corresponding path program 3 times [2023-12-20 08:02:01,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:01,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589701649] [2023-12-20 08:02:01,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:01,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:01,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:01,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589701649] [2023-12-20 08:02:01,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589701649] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:01,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129775510] [2023-12-20 08:02:01,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 08:02:01,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:01,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:01,532 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) [2023-12-20 08:02:01,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 08:02:01,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-20 08:02:01,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:01,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 08:02:01,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:01,598 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 17 treesize of output 13 [2023-12-20 08:02:01,627 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 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-20 08:02:01,635 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 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-20 08:02:01,698 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:01,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-12-20 08:02:01,830 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:01,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:01,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129775510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:01,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:01,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 28 [2023-12-20 08:02:01,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875971378] [2023-12-20 08:02:01,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:01,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 08:02:01,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:01,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 08:02:01,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2023-12-20 08:02:01,943 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 28 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:02,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:02,181 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2023-12-20 08:02:02,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 08:02:02,181 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 28 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-20 08:02:02,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:02,182 INFO L225 Difference]: With dead ends: 32 [2023-12-20 08:02:02,182 INFO L226 Difference]: Without dead ends: 30 [2023-12-20 08:02:02,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=381, Invalid=951, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 08:02:02,183 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 32 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:02,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 22 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:02:02,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-20 08:02:02,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2023-12-20 08:02:02,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:02,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-12-20 08:02:02,187 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2023-12-20 08:02:02,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:02,187 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-12-20 08:02:02,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 28 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:02,187 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-12-20 08:02:02,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-20 08:02:02,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:02,188 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:02,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 08:02:02,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:02,393 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:02,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:02,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1206277398, now seen corresponding path program 4 times [2023-12-20 08:02:02,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:02,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656026206] [2023-12-20 08:02:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:02,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:02,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:02,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656026206] [2023-12-20 08:02:02,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656026206] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:02,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400826245] [2023-12-20 08:02:02,472 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 08:02:02,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:02,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:02,476 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) [2023-12-20 08:02:02,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 08:02:02,589 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 08:02:02,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:02,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 08:02:02,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:02,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:02,727 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:02,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400826245] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:02,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:02,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 15 [2023-12-20 08:02:02,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072689011] [2023-12-20 08:02:02,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:02,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-20 08:02:02,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:02,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-20 08:02:02,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=124, Unknown=0, NotChecked=0, Total=210 [2023-12-20 08:02:02,731 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:02,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:02,802 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2023-12-20 08:02:02,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 08:02:02,802 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-20 08:02:02,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:02,803 INFO L225 Difference]: With dead ends: 52 [2023-12-20 08:02:02,803 INFO L226 Difference]: Without dead ends: 30 [2023-12-20 08:02:02,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=142, Unknown=0, NotChecked=0, Total=240 [2023-12-20 08:02:02,804 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:02,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 08:02:02,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-20 08:02:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2023-12-20 08:02:02,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-12-20 08:02:02,811 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 25 [2023-12-20 08:02:02,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:02,812 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-12-20 08:02:02,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:02,812 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-12-20 08:02:02,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-20 08:02:02,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:02,812 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:02,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 08:02:03,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:03,038 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:03,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:03,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2104111834, now seen corresponding path program 5 times [2023-12-20 08:02:03,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:03,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186253759] [2023-12-20 08:02:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:03,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:03,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:03,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186253759] [2023-12-20 08:02:03,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186253759] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:03,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158115303] [2023-12-20 08:02:03,495 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 08:02:03,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:03,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:03,522 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) [2023-12-20 08:02:03,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 08:02:03,582 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-20 08:02:03,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:03,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-20 08:02:03,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:03,596 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 17 treesize of output 13 [2023-12-20 08:02:03,617 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 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-20 08:02:03,624 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 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-20 08:02:03,677 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:03,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 33 [2023-12-20 08:02:03,692 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:03,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 46 [2023-12-20 08:02:03,795 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:03,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-12-20 08:02:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:04,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:04,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158115303] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:04,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:04,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 38 [2023-12-20 08:02:04,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918108236] [2023-12-20 08:02:04,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:04,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-20 08:02:04,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:04,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-20 08:02:04,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1041, Unknown=0, NotChecked=0, Total=1406 [2023-12-20 08:02:04,258 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 38 states, 38 states have (on average 2.0) internal successors, (76), 38 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:04,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:04,641 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2023-12-20 08:02:04,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-20 08:02:04,642 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0) internal successors, (76), 38 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-20 08:02:04,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:04,642 INFO L225 Difference]: With dead ends: 38 [2023-12-20 08:02:04,642 INFO L226 Difference]: Without dead ends: 36 [2023-12-20 08:02:04,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=618, Invalid=1638, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 08:02:04,644 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 37 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:04,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 32 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 08:02:04,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-20 08:02:04,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2023-12-20 08:02:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2023-12-20 08:02:04,648 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2023-12-20 08:02:04,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:04,648 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2023-12-20 08:02:04,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.0) internal successors, (76), 38 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:04,648 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2023-12-20 08:02:04,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-20 08:02:04,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:04,649 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:04,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 08:02:04,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:04,854 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:04,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:04,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1457375084, now seen corresponding path program 6 times [2023-12-20 08:02:04,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:04,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166098298] [2023-12-20 08:02:04,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:04,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:04,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:04,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166098298] [2023-12-20 08:02:04,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166098298] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:04,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155115733] [2023-12-20 08:02:04,937 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 08:02:04,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:04,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:04,962 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) [2023-12-20 08:02:04,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 08:02:05,024 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-20 08:02:05,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:05,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-20 08:02:05,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 26 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:05,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 33 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:05,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155115733] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:05,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:05,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 18 [2023-12-20 08:02:05,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038895232] [2023-12-20 08:02:05,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:05,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 08:02:05,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:05,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 08:02:05,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2023-12-20 08:02:05,199 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:05,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:05,279 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2023-12-20 08:02:05,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 08:02:05,280 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-20 08:02:05,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:05,280 INFO L225 Difference]: With dead ends: 61 [2023-12-20 08:02:05,280 INFO L226 Difference]: Without dead ends: 36 [2023-12-20 08:02:05,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=204, Unknown=0, NotChecked=0, Total=342 [2023-12-20 08:02:05,281 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:05,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:02:05,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-20 08:02:05,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2023-12-20 08:02:05,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:05,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-12-20 08:02:05,285 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2023-12-20 08:02:05,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:05,285 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-12-20 08:02:05,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:05,286 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2023-12-20 08:02:05,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 08:02:05,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:05,286 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:05,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 08:02:05,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:05,494 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:05,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:05,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1311657128, now seen corresponding path program 7 times [2023-12-20 08:02:05,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:05,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841366117] [2023-12-20 08:02:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:05,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:06,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:06,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841366117] [2023-12-20 08:02:06,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841366117] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:06,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110539647] [2023-12-20 08:02:06,021 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-20 08:02:06,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:06,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:06,022 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) [2023-12-20 08:02:06,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 08:02:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:06,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-20 08:02:06,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:06,085 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 17 treesize of output 13 [2023-12-20 08:02:06,106 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 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-20 08:02:06,112 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 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-20 08:02:06,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:06,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 33 [2023-12-20 08:02:06,149 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:06,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 46 [2023-12-20 08:02:06,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:06,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-12-20 08:02:06,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:06,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2023-12-20 08:02:06,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:06,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2023-12-20 08:02:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 30 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:06,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:06,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110539647] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:06,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:06,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 43 [2023-12-20 08:02:06,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142305127] [2023-12-20 08:02:06,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:06,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-20 08:02:06,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:06,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-20 08:02:06,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=1371, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 08:02:06,972 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 43 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:07,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:07,453 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2023-12-20 08:02:07,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-20 08:02:07,454 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 43 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-20 08:02:07,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:07,454 INFO L225 Difference]: With dead ends: 45 [2023-12-20 08:02:07,454 INFO L226 Difference]: Without dead ends: 43 [2023-12-20 08:02:07,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=782, Invalid=2298, Unknown=0, NotChecked=0, Total=3080 [2023-12-20 08:02:07,456 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 57 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:07,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 40 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 08:02:07,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-20 08:02:07,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2023-12-20 08:02:07,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:07,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2023-12-20 08:02:07,461 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 34 [2023-12-20 08:02:07,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:07,461 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2023-12-20 08:02:07,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 43 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:07,461 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2023-12-20 08:02:07,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-20 08:02:07,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:07,462 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:07,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 08:02:07,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:07,668 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:07,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:07,668 INFO L85 PathProgramCache]: Analyzing trace with hash -29622102, now seen corresponding path program 8 times [2023-12-20 08:02:07,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:07,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491326704] [2023-12-20 08:02:07,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:07,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:07,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:07,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491326704] [2023-12-20 08:02:07,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491326704] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:07,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502140781] [2023-12-20 08:02:07,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 08:02:07,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:07,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:07,754 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) [2023-12-20 08:02:07,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 08:02:07,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 08:02:07,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:07,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 08:02:07,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 40 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:07,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:08,001 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 49 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:08,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502140781] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:08,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:08,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 21 [2023-12-20 08:02:08,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867411903] [2023-12-20 08:02:08,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:08,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 08:02:08,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:08,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 08:02:08,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=251, Unknown=0, NotChecked=0, Total=420 [2023-12-20 08:02:08,003 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:08,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:08,072 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2023-12-20 08:02:08,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 08:02:08,073 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-20 08:02:08,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:08,073 INFO L225 Difference]: With dead ends: 70 [2023-12-20 08:02:08,073 INFO L226 Difference]: Without dead ends: 42 [2023-12-20 08:02:08,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=185, Invalid=277, Unknown=0, NotChecked=0, Total=462 [2023-12-20 08:02:08,074 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:08,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 41 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:02:08,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-20 08:02:08,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-12-20 08:02:08,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:08,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2023-12-20 08:02:08,078 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 37 [2023-12-20 08:02:08,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:08,078 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2023-12-20 08:02:08,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:08,079 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2023-12-20 08:02:08,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-20 08:02:08,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:08,080 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:08,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 08:02:08,285 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,SelfDestructingSolverStorable11 [2023-12-20 08:02:08,285 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:08,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:08,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1011525862, now seen corresponding path program 9 times [2023-12-20 08:02:08,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:08,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180694477] [2023-12-20 08:02:08,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:08,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 23 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:08,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:08,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180694477] [2023-12-20 08:02:08,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180694477] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:08,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764508576] [2023-12-20 08:02:08,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 08:02:08,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:08,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:08,923 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) [2023-12-20 08:02:08,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 08:02:09,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-20 08:02:09,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:09,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-20 08:02:09,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:09,065 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 17 treesize of output 13 [2023-12-20 08:02:09,110 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 37 treesize of output 17 [2023-12-20 08:02:09,120 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 31 treesize of output 30 [2023-12-20 08:02:09,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:09,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 33 [2023-12-20 08:02:09,177 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:09,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2023-12-20 08:02:09,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:09,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-12-20 08:02:09,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:09,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2023-12-20 08:02:09,298 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:09,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2023-12-20 08:02:09,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:09,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 78 [2023-12-20 08:02:09,470 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:09,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2023-12-20 08:02:10,077 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:10,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 25 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:10,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764508576] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:10,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:10,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 18] total 49 [2023-12-20 08:02:10,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837920363] [2023-12-20 08:02:10,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:10,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-20 08:02:10,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:10,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-20 08:02:10,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=1792, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 08:02:10,536 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 49 states, 49 states have (on average 2.3469387755102042) internal successors, (115), 49 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:11,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:11,737 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2023-12-20 08:02:11,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-20 08:02:11,737 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.3469387755102042) internal successors, (115), 49 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-20 08:02:11,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:11,738 INFO L225 Difference]: With dead ends: 79 [2023-12-20 08:02:11,738 INFO L226 Difference]: Without dead ends: 55 [2023-12-20 08:02:11,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1967 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1656, Invalid=5316, Unknown=0, NotChecked=0, Total=6972 [2023-12-20 08:02:11,740 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 132 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:11,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 76 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 08:02:11,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-20 08:02:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2023-12-20 08:02:11,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 46 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:11,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2023-12-20 08:02:11,746 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 40 [2023-12-20 08:02:11,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:11,746 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2023-12-20 08:02:11,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.3469387755102042) internal successors, (115), 49 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:11,746 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2023-12-20 08:02:11,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-20 08:02:11,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:11,747 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:11,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 08:02:11,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-20 08:02:11,956 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:11,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:11,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1393238296, now seen corresponding path program 10 times [2023-12-20 08:02:11,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:11,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625426536] [2023-12-20 08:02:11,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:11,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 26 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:12,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:12,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625426536] [2023-12-20 08:02:12,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625426536] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:12,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590806438] [2023-12-20 08:02:12,723 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 08:02:12,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:12,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:12,733 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) [2023-12-20 08:02:12,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 08:02:12,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 08:02:12,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:12,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-20 08:02:12,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:12,837 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 18 treesize of output 14 [2023-12-20 08:02:12,850 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 0 case distinctions, treesize of input 40 treesize of output 18 [2023-12-20 08:02:12,854 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 0 case distinctions, treesize of input 33 treesize of output 32 [2023-12-20 08:02:12,884 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:12,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 54 treesize of output 35 [2023-12-20 08:02:12,890 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:12,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 47 treesize of output 49 [2023-12-20 08:02:12,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:12,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 52 [2023-12-20 08:02:12,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:12,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 66 [2023-12-20 08:02:12,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:12,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 69 [2023-12-20 08:02:13,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:13,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 83 [2023-12-20 08:02:13,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:13,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 96 treesize of output 86 [2023-12-20 08:02:13,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:13,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 100 [2023-12-20 08:02:13,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:13,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2023-12-20 08:02:13,840 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 64 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:13,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 30 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:14,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590806438] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:14,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:14,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 20] total 53 [2023-12-20 08:02:14,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559586419] [2023-12-20 08:02:14,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:14,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-20 08:02:14,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:14,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-20 08:02:14,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=2289, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 08:02:14,289 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 53 states, 53 states have (on average 2.452830188679245) internal successors, (130), 53 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:15,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:15,583 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2023-12-20 08:02:15,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-20 08:02:15,583 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.452830188679245) internal successors, (130), 53 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-20 08:02:15,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:15,584 INFO L225 Difference]: With dead ends: 63 [2023-12-20 08:02:15,584 INFO L226 Difference]: Without dead ends: 61 [2023-12-20 08:02:15,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1911 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1611, Invalid=5699, Unknown=0, NotChecked=0, Total=7310 [2023-12-20 08:02:15,586 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 166 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:15,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 35 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 08:02:15,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-20 08:02:15,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2023-12-20 08:02:15,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:15,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2023-12-20 08:02:15,596 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 46 [2023-12-20 08:02:15,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:15,598 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2023-12-20 08:02:15,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.452830188679245) internal successors, (130), 53 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:15,598 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2023-12-20 08:02:15,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 08:02:15,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:15,599 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:15,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-20 08:02:15,800 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,SelfDestructingSolverStorable13 [2023-12-20 08:02:15,800 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:15,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:15,800 INFO L85 PathProgramCache]: Analyzing trace with hash 607209066, now seen corresponding path program 11 times [2023-12-20 08:02:15,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:15,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078803884] [2023-12-20 08:02:15,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:15,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 58 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:15,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:15,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078803884] [2023-12-20 08:02:15,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078803884] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:15,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714097717] [2023-12-20 08:02:15,940 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 08:02:15,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:15,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:15,942 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) [2023-12-20 08:02:15,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 08:02:16,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-12-20 08:02:16,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:16,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 08:02:16,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 77 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:16,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 90 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:16,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714097717] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:16,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:16,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 27 [2023-12-20 08:02:16,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46700292] [2023-12-20 08:02:16,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:16,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 08:02:16,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:16,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 08:02:16,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=422, Unknown=0, NotChecked=0, Total=702 [2023-12-20 08:02:16,393 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 27 states, 27 states have (on average 3.5925925925925926) internal successors, (97), 27 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:16,508 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2023-12-20 08:02:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 08:02:16,508 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5925925925925926) internal successors, (97), 27 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-20 08:02:16,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:16,509 INFO L225 Difference]: With dead ends: 93 [2023-12-20 08:02:16,509 INFO L226 Difference]: Without dead ends: 54 [2023-12-20 08:02:16,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 81 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=320, Invalid=492, Unknown=0, NotChecked=0, Total=812 [2023-12-20 08:02:16,511 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:16,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 50 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:02:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-20 08:02:16,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2023-12-20 08:02:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:16,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2023-12-20 08:02:16,521 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 49 [2023-12-20 08:02:16,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:16,522 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2023-12-20 08:02:16,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5925925925925926) internal successors, (97), 27 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:16,522 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2023-12-20 08:02:16,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 08:02:16,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:16,522 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:16,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 08:02:16,728 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,SelfDestructingSolverStorable14 [2023-12-20 08:02:16,728 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:16,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:16,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1606847322, now seen corresponding path program 12 times [2023-12-20 08:02:16,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:16,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705125192] [2023-12-20 08:02:16,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:16,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:17,466 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 24 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:17,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:17,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705125192] [2023-12-20 08:02:17,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705125192] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:17,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133411290] [2023-12-20 08:02:17,467 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 08:02:17,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:17,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:17,468 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) [2023-12-20 08:02:17,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 08:02:17,725 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-12-20 08:02:17,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:17,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 75 conjunts are in the unsatisfiable core [2023-12-20 08:02:17,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:17,749 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 17 treesize of output 13 [2023-12-20 08:02:17,771 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 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-20 08:02:17,775 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 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-20 08:02:17,802 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:17,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 33 [2023-12-20 08:02:17,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:17,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2023-12-20 08:02:17,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:17,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-12-20 08:02:17,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:17,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2023-12-20 08:02:17,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:17,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2023-12-20 08:02:17,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:17,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 78 [2023-12-20 08:02:18,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:18,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 81 [2023-12-20 08:02:18,051 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:18,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 94 [2023-12-20 08:02:18,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:18,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 97 [2023-12-20 08:02:18,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:18,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 110 [2023-12-20 08:02:18,328 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:18,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2023-12-20 08:02:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 58 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:19,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:19,457 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 35 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:19,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133411290] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:19,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:19,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 24, 22] total 46 [2023-12-20 08:02:19,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449432633] [2023-12-20 08:02:19,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:19,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-20 08:02:19,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:19,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-20 08:02:19,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=484, Invalid=1586, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 08:02:19,459 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 46 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:20,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:20,433 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2023-12-20 08:02:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-20 08:02:20,434 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 46 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-20 08:02:20,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:20,434 INFO L225 Difference]: With dead ends: 62 [2023-12-20 08:02:20,434 INFO L226 Difference]: Without dead ends: 60 [2023-12-20 08:02:20,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 77 SyntacticMatches, 10 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1461 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1163, Invalid=3529, Unknown=0, NotChecked=0, Total=4692 [2023-12-20 08:02:20,435 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 43 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:20,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 37 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 08:02:20,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-20 08:02:20,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2023-12-20 08:02:20,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2023-12-20 08:02:20,442 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 52 [2023-12-20 08:02:20,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:20,443 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2023-12-20 08:02:20,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 46 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2023-12-20 08:02:20,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 08:02:20,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:20,443 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:20,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 08:02:20,650 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,SelfDestructingSolverStorable15 [2023-12-20 08:02:20,650 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:20,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:20,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2122248172, now seen corresponding path program 13 times [2023-12-20 08:02:20,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:20,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856064865] [2023-12-20 08:02:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:20,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 78 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:20,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:20,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856064865] [2023-12-20 08:02:20,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856064865] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:20,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945156792] [2023-12-20 08:02:20,798 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-20 08:02:20,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:20,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:20,814 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) [2023-12-20 08:02:20,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 08:02:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:20,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 08:02:20,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 100 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:21,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 115 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:21,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945156792] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:21,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:21,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 20] total 30 [2023-12-20 08:02:21,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001200414] [2023-12-20 08:02:21,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:21,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 08:02:21,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:21,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 08:02:21,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=524, Unknown=0, NotChecked=0, Total=870 [2023-12-20 08:02:21,259 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 30 states, 30 states have (on average 3.6333333333333333) internal successors, (109), 30 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:21,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:21,351 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2023-12-20 08:02:21,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-20 08:02:21,352 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.6333333333333333) internal successors, (109), 30 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 08:02:21,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:21,352 INFO L225 Difference]: With dead ends: 97 [2023-12-20 08:02:21,352 INFO L226 Difference]: Without dead ends: 60 [2023-12-20 08:02:21,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 91 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=368, Invalid=562, Unknown=0, NotChecked=0, Total=930 [2023-12-20 08:02:21,355 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:21,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 52 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:02:21,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-20 08:02:21,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2023-12-20 08:02:21,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2023-12-20 08:02:21,367 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 55 [2023-12-20 08:02:21,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:21,367 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2023-12-20 08:02:21,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.6333333333333333) internal successors, (109), 30 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:21,367 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2023-12-20 08:02:21,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 08:02:21,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:21,368 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:21,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-20 08:02:21,571 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,SelfDestructingSolverStorable16 [2023-12-20 08:02:21,571 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:21,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:21,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1725791960, now seen corresponding path program 14 times [2023-12-20 08:02:21,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:21,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923959935] [2023-12-20 08:02:21,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:21,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 32 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:22,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:22,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923959935] [2023-12-20 08:02:22,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923959935] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:22,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363362872] [2023-12-20 08:02:22,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 08:02:22,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:22,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:22,645 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) [2023-12-20 08:02:22,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 08:02:22,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 08:02:22,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:22,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 83 conjunts are in the unsatisfiable core [2023-12-20 08:02:22,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:22,773 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 17 treesize of output 13 [2023-12-20 08:02:22,796 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 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-20 08:02:22,801 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 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-20 08:02:22,835 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:22,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 33 [2023-12-20 08:02:22,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:22,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 46 [2023-12-20 08:02:22,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:22,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-12-20 08:02:22,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:22,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2023-12-20 08:02:22,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:22,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2023-12-20 08:02:22,962 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:22,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 78 [2023-12-20 08:02:23,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:23,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 81 [2023-12-20 08:02:23,038 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:23,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 94 [2023-12-20 08:02:23,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:23,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 97 [2023-12-20 08:02:23,128 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:23,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 110 [2023-12-20 08:02:23,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:23,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 113 [2023-12-20 08:02:23,297 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:23,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 105 treesize of output 122 [2023-12-20 08:02:23,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:23,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:23,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:23,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:23,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:23,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:23,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:23,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:23,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:23,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 114 treesize of output 134 [2023-12-20 08:02:25,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:25,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:25,765 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-20 08:02:25,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:25,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:25,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:25,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:25,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:25,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:25,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 08:02:25,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:25,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 117 treesize of output 48 [2023-12-20 08:02:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 94 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:25,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 40 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:26,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363362872] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:26,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:26,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 25] total 64 [2023-12-20 08:02:26,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686866960] [2023-12-20 08:02:26,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:26,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-20 08:02:26,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:26,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-20 08:02:26,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=867, Invalid=3165, Unknown=0, NotChecked=0, Total=4032 [2023-12-20 08:02:26,315 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:28,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:28,425 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2023-12-20 08:02:28,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-20 08:02:28,425 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-20 08:02:28,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:28,426 INFO L225 Difference]: With dead ends: 68 [2023-12-20 08:02:28,426 INFO L226 Difference]: Without dead ends: 66 [2023-12-20 08:02:28,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2105 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1716, Invalid=5424, Unknown=0, NotChecked=0, Total=7140 [2023-12-20 08:02:28,428 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 74 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:28,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 36 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 08:02:28,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-20 08:02:28,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2023-12-20 08:02:28,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2023-12-20 08:02:28,438 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 58 [2023-12-20 08:02:28,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:28,438 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2023-12-20 08:02:28,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:28,440 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2023-12-20 08:02:28,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 08:02:28,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:28,441 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:28,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 08:02:28,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:28,646 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:28,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:28,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1990556714, now seen corresponding path program 15 times [2023-12-20 08:02:28,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:28,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883391666] [2023-12-20 08:02:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:28,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 101 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:28,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:28,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883391666] [2023-12-20 08:02:28,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883391666] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:28,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950753892] [2023-12-20 08:02:28,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 08:02:28,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:28,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:28,828 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) [2023-12-20 08:02:28,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 08:02:29,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-20 08:02:29,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:29,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-20 08:02:29,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:29,213 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 126 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:29,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 143 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:29,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950753892] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:29,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:29,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 22, 22] total 33 [2023-12-20 08:02:29,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915967230] [2023-12-20 08:02:29,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:29,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 08:02:29,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:29,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 08:02:29,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=637, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 08:02:29,358 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 33 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 33 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:29,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:29,498 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2023-12-20 08:02:29,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-20 08:02:29,498 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 33 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 08:02:29,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:29,499 INFO L225 Difference]: With dead ends: 106 [2023-12-20 08:02:29,499 INFO L226 Difference]: Without dead ends: 66 [2023-12-20 08:02:29,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 101 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=443, Invalid=679, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 08:02:29,501 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:29,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 61 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:02:29,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-20 08:02:29,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2023-12-20 08:02:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:29,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2023-12-20 08:02:29,518 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 61 [2023-12-20 08:02:29,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:29,518 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2023-12-20 08:02:29,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 33 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2023-12-20 08:02:29,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 08:02:29,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:29,519 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:29,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 08:02:29,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:29,726 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:29,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:29,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1735511962, now seen corresponding path program 16 times [2023-12-20 08:02:29,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:29,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319905116] [2023-12-20 08:02:29,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:29,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 33 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:30,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:30,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319905116] [2023-12-20 08:02:30,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319905116] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:30,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737716392] [2023-12-20 08:02:30,836 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 08:02:30,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:30,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:30,837 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) [2023-12-20 08:02:30,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 08:02:30,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 08:02:30,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:30,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 89 conjunts are in the unsatisfiable core [2023-12-20 08:02:30,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:30,940 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 18 treesize of output 14 [2023-12-20 08:02:30,955 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 0 case distinctions, treesize of input 40 treesize of output 18 [2023-12-20 08:02:30,959 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 0 case distinctions, treesize of input 33 treesize of output 32 [2023-12-20 08:02:30,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:30,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 54 treesize of output 35 [2023-12-20 08:02:30,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:30,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 47 treesize of output 49 [2023-12-20 08:02:31,024 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:31,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 52 [2023-12-20 08:02:31,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:31,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 66 [2023-12-20 08:02:31,076 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:31,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 69 [2023-12-20 08:02:31,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:31,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 83 [2023-12-20 08:02:31,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:31,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 96 treesize of output 86 [2023-12-20 08:02:31,155 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:31,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 100 [2023-12-20 08:02:31,216 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:31,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 103 [2023-12-20 08:02:31,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:31,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 103 treesize of output 117 [2023-12-20 08:02:31,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:31,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 124 treesize of output 120 [2023-12-20 08:02:31,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:31,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 117 treesize of output 134 [2023-12-20 08:02:31,451 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:31,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 138 treesize of output 137 [2023-12-20 08:02:31,477 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:31,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 131 treesize of output 151 [2023-12-20 08:02:31,699 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:31,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2023-12-20 08:02:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 136 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:32,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 45 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:33,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737716392] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:33,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:33,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 26, 26] total 67 [2023-12-20 08:02:33,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430560270] [2023-12-20 08:02:33,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:33,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-20 08:02:33,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:33,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-20 08:02:33,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=726, Invalid=3696, Unknown=0, NotChecked=0, Total=4422 [2023-12-20 08:02:33,448 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 67 states, 67 states have (on average 2.746268656716418) internal successors, (184), 67 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:36,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:36,013 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2023-12-20 08:02:36,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-20 08:02:36,013 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.746268656716418) internal successors, (184), 67 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 08:02:36,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:36,013 INFO L225 Difference]: With dead ends: 74 [2023-12-20 08:02:36,013 INFO L226 Difference]: Without dead ends: 72 [2023-12-20 08:02:36,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3266 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2597, Invalid=9613, Unknown=0, NotChecked=0, Total=12210 [2023-12-20 08:02:36,014 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 136 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:36,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 49 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 08:02:36,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-20 08:02:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2023-12-20 08:02:36,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:36,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2023-12-20 08:02:36,025 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 64 [2023-12-20 08:02:36,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:36,025 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2023-12-20 08:02:36,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.746268656716418) internal successors, (184), 67 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:36,026 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2023-12-20 08:02:36,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-20 08:02:36,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:36,026 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:36,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 08:02:36,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:36,231 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:36,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:36,231 INFO L85 PathProgramCache]: Analyzing trace with hash 184785964, now seen corresponding path program 17 times [2023-12-20 08:02:36,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:36,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757691248] [2023-12-20 08:02:36,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:36,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:36,422 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 127 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:36,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:36,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757691248] [2023-12-20 08:02:36,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757691248] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:36,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25200534] [2023-12-20 08:02:36,423 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 08:02:36,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:36,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:36,424 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) [2023-12-20 08:02:36,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 08:02:36,717 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-12-20 08:02:36,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:36,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-20 08:02:36,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:36,937 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 155 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:36,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:37,201 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 174 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:37,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25200534] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:37,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:37,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 24, 24] total 36 [2023-12-20 08:02:37,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036355480] [2023-12-20 08:02:37,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:37,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 08:02:37,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:37,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 08:02:37,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=761, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 08:02:37,203 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 36 states, 36 states have (on average 3.6944444444444446) internal successors, (133), 36 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:37,348 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2023-12-20 08:02:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-20 08:02:37,348 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6944444444444446) internal successors, (133), 36 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-20 08:02:37,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:37,349 INFO L225 Difference]: With dead ends: 115 [2023-12-20 08:02:37,349 INFO L226 Difference]: Without dead ends: 72 [2023-12-20 08:02:37,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 111 SyntacticMatches, 11 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=525, Invalid=807, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 08:02:37,350 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:37,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 72 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:02:37,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-20 08:02:37,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2023-12-20 08:02:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:37,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2023-12-20 08:02:37,366 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 67 [2023-12-20 08:02:37,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:37,366 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2023-12-20 08:02:37,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6944444444444446) internal successors, (133), 36 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:37,367 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2023-12-20 08:02:37,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-20 08:02:37,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:37,367 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:37,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 08:02:37,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:37,573 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:37,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:37,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1720398696, now seen corresponding path program 18 times [2023-12-20 08:02:37,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:37,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084386094] [2023-12-20 08:02:37,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:37,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 31 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:38,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:38,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084386094] [2023-12-20 08:02:38,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084386094] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:38,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136903263] [2023-12-20 08:02:38,631 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 08:02:38,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:38,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:38,633 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) [2023-12-20 08:02:38,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 08:02:39,134 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2023-12-20 08:02:39,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:39,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-20 08:02:39,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:39,161 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 17 treesize of output 13 [2023-12-20 08:02:39,185 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 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-20 08:02:39,191 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 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-20 08:02:39,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:39,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 33 [2023-12-20 08:02:39,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:39,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 46 [2023-12-20 08:02:39,273 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:39,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-12-20 08:02:39,284 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:39,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2023-12-20 08:02:39,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:39,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2023-12-20 08:02:39,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:39,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 78 [2023-12-20 08:02:39,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:39,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 81 [2023-12-20 08:02:39,435 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:39,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 94 [2023-12-20 08:02:39,506 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:39,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 97 [2023-12-20 08:02:39,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:39,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 110 [2023-12-20 08:02:39,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:39,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 113 [2023-12-20 08:02:39,646 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:39,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 126 [2023-12-20 08:02:39,744 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:39,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 129 [2023-12-20 08:02:39,769 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:39,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 142 [2023-12-20 08:02:39,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:39,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 141 treesize of output 145 [2023-12-20 08:02:39,913 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:39,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 135 treesize of output 158 [2023-12-20 08:02:40,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:40,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 82 treesize of output 108 [2023-12-20 08:02:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 166 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:41,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 50 proven. 281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:42,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136903263] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:42,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:42,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 29, 28] total 57 [2023-12-20 08:02:42,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047813409] [2023-12-20 08:02:42,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:42,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-20 08:02:42,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-20 08:02:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=756, Invalid=2436, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 08:02:42,131 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 57 states, 57 states have (on average 3.0526315789473686) internal successors, (174), 57 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:43,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:43,627 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2023-12-20 08:02:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-20 08:02:43,628 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.0526315789473686) internal successors, (174), 57 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-20 08:02:43,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:43,628 INFO L225 Difference]: With dead ends: 80 [2023-12-20 08:02:43,628 INFO L226 Difference]: Without dead ends: 78 [2023-12-20 08:02:43,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 105 SyntacticMatches, 14 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2169 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1763, Invalid=5209, Unknown=0, NotChecked=0, Total=6972 [2023-12-20 08:02:43,629 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 60 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:43,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 37 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 08:02:43,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-20 08:02:43,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2023-12-20 08:02:43,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:43,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2023-12-20 08:02:43,651 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 70 [2023-12-20 08:02:43,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:43,651 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2023-12-20 08:02:43,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.0526315789473686) internal successors, (174), 57 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:43,651 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2023-12-20 08:02:43,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 08:02:43,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:43,652 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:43,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-20 08:02:43,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:43,858 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:43,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:43,859 INFO L85 PathProgramCache]: Analyzing trace with hash 558146026, now seen corresponding path program 19 times [2023-12-20 08:02:43,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:43,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358500477] [2023-12-20 08:02:43,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:43,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 156 proven. 207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:44,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:44,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358500477] [2023-12-20 08:02:44,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358500477] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:44,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381510519] [2023-12-20 08:02:44,055 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-20 08:02:44,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:44,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:44,056 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) [2023-12-20 08:02:44,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-20 08:02:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:44,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-20 08:02:44,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 187 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:44,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 208 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:44,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381510519] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:44,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:44,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 26, 26] total 39 [2023-12-20 08:02:44,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851110523] [2023-12-20 08:02:44,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:44,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-20 08:02:44,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:44,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-20 08:02:44,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=896, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 08:02:44,690 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:44,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:44,831 INFO L93 Difference]: Finished difference Result 124 states and 129 transitions. [2023-12-20 08:02:44,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-20 08:02:44,832 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-20 08:02:44,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:44,833 INFO L225 Difference]: With dead ends: 124 [2023-12-20 08:02:44,833 INFO L226 Difference]: Without dead ends: 78 [2023-12-20 08:02:44,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 121 SyntacticMatches, 12 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=614, Invalid=946, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 08:02:44,834 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:44,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 82 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:02:44,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-20 08:02:44,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2023-12-20 08:02:44,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:44,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2023-12-20 08:02:44,847 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 73 [2023-12-20 08:02:44,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:44,847 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2023-12-20 08:02:44,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:44,848 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2023-12-20 08:02:44,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 08:02:44,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:44,848 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:44,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-20 08:02:45,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:45,052 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:45,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:45,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1368073178, now seen corresponding path program 20 times [2023-12-20 08:02:45,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:45,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619193592] [2023-12-20 08:02:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:45,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 36 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:46,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:46,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619193592] [2023-12-20 08:02:46,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619193592] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:46,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301994774] [2023-12-20 08:02:46,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 08:02:46,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:46,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:46,413 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) [2023-12-20 08:02:46,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-20 08:02:46,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 08:02:46,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:46,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 108 conjunts are in the unsatisfiable core [2023-12-20 08:02:46,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:46,560 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 17 treesize of output 13 [2023-12-20 08:02:46,585 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 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-20 08:02:46,590 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 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-20 08:02:46,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:46,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 33 [2023-12-20 08:02:46,631 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:46,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 46 [2023-12-20 08:02:46,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:46,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-12-20 08:02:46,683 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:46,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2023-12-20 08:02:46,736 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:46,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2023-12-20 08:02:46,749 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:46,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 78 [2023-12-20 08:02:46,819 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:46,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 81 [2023-12-20 08:02:46,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:46,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 94 [2023-12-20 08:02:46,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:46,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 97 [2023-12-20 08:02:46,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:46,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 110 [2023-12-20 08:02:47,036 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:47,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 113 [2023-12-20 08:02:47,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:47,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 126 [2023-12-20 08:02:47,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:47,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 129 [2023-12-20 08:02:47,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:47,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 142 [2023-12-20 08:02:47,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:47,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 141 treesize of output 145 [2023-12-20 08:02:47,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:47,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 135 treesize of output 158 [2023-12-20 08:02:47,458 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:47,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 154 treesize of output 161 [2023-12-20 08:02:47,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:47,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 148 treesize of output 174 [2023-12-20 08:02:47,775 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:47,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 89 treesize of output 118 [2023-12-20 08:02:49,219 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 198 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:49,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 55 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:49,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301994774] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:49,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:49,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 31, 30] total 61 [2023-12-20 08:02:49,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813832120] [2023-12-20 08:02:49,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:49,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-20 08:02:49,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:49,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-20 08:02:49,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=2799, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 08:02:49,579 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 61 states, 61 states have (on average 3.0327868852459017) internal successors, (185), 61 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:51,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:51,137 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2023-12-20 08:02:51,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-20 08:02:51,137 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.0327868852459017) internal successors, (185), 61 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 08:02:51,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:51,137 INFO L225 Difference]: With dead ends: 87 [2023-12-20 08:02:51,138 INFO L226 Difference]: Without dead ends: 85 [2023-12-20 08:02:51,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 117 SyntacticMatches, 13 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1885, Invalid=5771, Unknown=0, NotChecked=0, Total=7656 [2023-12-20 08:02:51,138 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 100 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:51,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 43 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 08:02:51,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-20 08:02:51,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2023-12-20 08:02:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 79 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:51,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2023-12-20 08:02:51,152 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 76 [2023-12-20 08:02:51,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:51,153 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2023-12-20 08:02:51,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.0327868852459017) internal successors, (185), 61 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:51,153 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2023-12-20 08:02:51,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-20 08:02:51,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:51,153 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:51,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-20 08:02:51,359 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,SelfDestructingSolverStorable23 [2023-12-20 08:02:51,359 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:51,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:51,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1318037396, now seen corresponding path program 21 times [2023-12-20 08:02:51,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:51,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297177669] [2023-12-20 08:02:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:51,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:51,575 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 188 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:51,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:51,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297177669] [2023-12-20 08:02:51,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297177669] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:51,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50927347] [2023-12-20 08:02:51,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 08:02:51,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:51,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:51,588 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) [2023-12-20 08:02:51,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-20 08:02:52,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-12-20 08:02:52,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:52,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 08:02:52,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 222 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:52,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 245 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:52,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50927347] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:52,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:52,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 28, 28] total 42 [2023-12-20 08:02:52,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884673255] [2023-12-20 08:02:52,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:52,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-20 08:02:52,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:52,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-20 08:02:52,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=680, Invalid=1042, Unknown=0, NotChecked=0, Total=1722 [2023-12-20 08:02:52,828 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 42 states, 42 states have (on average 3.738095238095238) internal successors, (157), 42 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:52,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:02:52,942 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2023-12-20 08:02:52,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 08:02:52,942 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.738095238095238) internal successors, (157), 42 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-20 08:02:52,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:02:52,943 INFO L225 Difference]: With dead ends: 133 [2023-12-20 08:02:52,943 INFO L226 Difference]: Without dead ends: 84 [2023-12-20 08:02:52,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 131 SyntacticMatches, 13 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=710, Invalid=1096, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 08:02:52,943 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:02:52,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 85 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:02:52,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-20 08:02:52,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2023-12-20 08:02:52,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:52,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2023-12-20 08:02:52,958 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 79 [2023-12-20 08:02:52,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:02:52,958 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2023-12-20 08:02:52,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.738095238095238) internal successors, (157), 42 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:02:52,958 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2023-12-20 08:02:52,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-20 08:02:52,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:02:52,959 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:02:52,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-20 08:02:53,165 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,SelfDestructingSolverStorable24 [2023-12-20 08:02:53,165 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:02:53,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:02:53,166 INFO L85 PathProgramCache]: Analyzing trace with hash 704837032, now seen corresponding path program 22 times [2023-12-20 08:02:53,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:02:53,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512972962] [2023-12-20 08:02:53,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:02:53,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:02:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:02:54,822 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 60 proven. 409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:54,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:02:54,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512972962] [2023-12-20 08:02:54,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512972962] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:02:54,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034880438] [2023-12-20 08:02:54,823 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 08:02:54,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:02:54,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:02:54,824 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) [2023-12-20 08:02:54,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-20 08:02:54,953 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 08:02:54,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:02:54,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 113 conjunts are in the unsatisfiable core [2023-12-20 08:02:54,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:02:54,960 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 18 treesize of output 14 [2023-12-20 08:02:54,974 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 0 case distinctions, treesize of input 40 treesize of output 18 [2023-12-20 08:02:54,977 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 0 case distinctions, treesize of input 33 treesize of output 32 [2023-12-20 08:02:54,999 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:54,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 54 treesize of output 35 [2023-12-20 08:02:55,004 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 47 treesize of output 49 [2023-12-20 08:02:55,031 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 52 [2023-12-20 08:02:55,038 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 66 [2023-12-20 08:02:55,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 69 [2023-12-20 08:02:55,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 83 [2023-12-20 08:02:55,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 96 treesize of output 86 [2023-12-20 08:02:55,154 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 100 [2023-12-20 08:02:55,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 103 [2023-12-20 08:02:55,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 103 treesize of output 117 [2023-12-20 08:02:55,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 124 treesize of output 120 [2023-12-20 08:02:55,352 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 117 treesize of output 134 [2023-12-20 08:02:55,452 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 138 treesize of output 137 [2023-12-20 08:02:55,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 131 treesize of output 151 [2023-12-20 08:02:55,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 152 treesize of output 154 [2023-12-20 08:02:55,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 145 treesize of output 168 [2023-12-20 08:02:55,753 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 166 treesize of output 171 [2023-12-20 08:02:55,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 159 treesize of output 185 [2023-12-20 08:02:55,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 180 treesize of output 188 [2023-12-20 08:02:55,955 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:55,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 173 treesize of output 202 [2023-12-20 08:02:56,216 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:02:56,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 120 treesize of output 152 [2023-12-20 08:02:58,300 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 235 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:58,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:02:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 60 proven. 409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:02:59,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034880438] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:02:59,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:02:59,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 91 [2023-12-20 08:02:59,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349092661] [2023-12-20 08:02:59,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:02:59,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-12-20 08:02:59,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:02:59,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-12-20 08:02:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1439, Invalid=6751, Unknown=0, NotChecked=0, Total=8190 [2023-12-20 08:02:59,355 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand has 91 states, 91 states have (on average 2.6153846153846154) internal successors, (238), 91 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:03,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:03:03,943 INFO L93 Difference]: Finished difference Result 92 states and 95 transitions. [2023-12-20 08:03:03,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-20 08:03:03,943 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.6153846153846154) internal successors, (238), 91 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-12-20 08:03:03,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:03:03,943 INFO L225 Difference]: With dead ends: 92 [2023-12-20 08:03:03,944 INFO L226 Difference]: Without dead ends: 90 [2023-12-20 08:03:03,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6028 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=4450, Invalid=17012, Unknown=0, NotChecked=0, Total=21462 [2023-12-20 08:03:03,952 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 123 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:03:03,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 49 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 08:03:03,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-20 08:03:03,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2023-12-20 08:03:03,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:03,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2023-12-20 08:03:03,968 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 82 [2023-12-20 08:03:03,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:03:03,968 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2023-12-20 08:03:03,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.6153846153846154) internal successors, (238), 91 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:03,969 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2023-12-20 08:03:03,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 08:03:03,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:03:03,970 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:03:03,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-20 08:03:04,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 08:03:04,176 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:03:04,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:03:04,177 INFO L85 PathProgramCache]: Analyzing trace with hash -289753174, now seen corresponding path program 23 times [2023-12-20 08:03:04,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:03:04,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026565628] [2023-12-20 08:03:04,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:03:04,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:03:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:03:04,434 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 223 proven. 284 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:04,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:03:04,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026565628] [2023-12-20 08:03:04,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026565628] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:03:04,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909404495] [2023-12-20 08:03:04,435 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 08:03:04,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:03:04,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:03:04,436 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) [2023-12-20 08:03:04,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-20 08:03:04,954 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-12-20 08:03:04,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:03:04,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 08:03:04,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:03:05,237 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 260 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:05,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:03:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 285 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:05,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909404495] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:03:05,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:03:05,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 30, 30] total 45 [2023-12-20 08:03:05,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065387699] [2023-12-20 08:03:05,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:03:05,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-20 08:03:05,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:03:05,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-20 08:03:05,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=781, Invalid=1199, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 08:03:05,598 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand has 45 states, 45 states have (on average 3.7555555555555555) internal successors, (169), 45 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:05,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:03:05,761 INFO L93 Difference]: Finished difference Result 142 states and 147 transitions. [2023-12-20 08:03:05,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-20 08:03:05,761 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.7555555555555555) internal successors, (169), 45 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-20 08:03:05,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:03:05,761 INFO L225 Difference]: With dead ends: 142 [2023-12-20 08:03:05,761 INFO L226 Difference]: Without dead ends: 90 [2023-12-20 08:03:05,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 141 SyntacticMatches, 14 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=813, Invalid=1257, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 08:03:05,762 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:03:05,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 77 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:03:05,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-20 08:03:05,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2023-12-20 08:03:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2023-12-20 08:03:05,779 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 85 [2023-12-20 08:03:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:03:05,779 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2023-12-20 08:03:05,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.7555555555555555) internal successors, (169), 45 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2023-12-20 08:03:05,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 08:03:05,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:03:05,779 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:03:05,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-20 08:03:05,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:03:05,984 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:03:05,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:03:05,985 INFO L85 PathProgramCache]: Analyzing trace with hash -904300570, now seen corresponding path program 24 times [2023-12-20 08:03:05,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:03:05,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303653860] [2023-12-20 08:03:05,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:03:05,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:03:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:03:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 42 proven. 505 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:07,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:03:07,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303653860] [2023-12-20 08:03:07,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303653860] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:03:07,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433088442] [2023-12-20 08:03:07,605 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 08:03:07,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:03:07,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:03:07,607 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) [2023-12-20 08:03:07,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-20 08:03:09,027 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2023-12-20 08:03:09,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:03:09,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 124 conjunts are in the unsatisfiable core [2023-12-20 08:03:09,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:03:09,060 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 17 treesize of output 13 [2023-12-20 08:03:09,113 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 37 treesize of output 17 [2023-12-20 08:03:09,123 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 31 treesize of output 30 [2023-12-20 08:03:09,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:09,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 33 [2023-12-20 08:03:09,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:09,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2023-12-20 08:03:09,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:09,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-12-20 08:03:09,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:09,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2023-12-20 08:03:09,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:09,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2023-12-20 08:03:09,321 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:09,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 78 [2023-12-20 08:03:09,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:09,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 81 [2023-12-20 08:03:09,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:09,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 94 [2023-12-20 08:03:09,496 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:09,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 97 [2023-12-20 08:03:09,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:09,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 110 [2023-12-20 08:03:09,617 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:09,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 113 [2023-12-20 08:03:09,645 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:09,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 126 [2023-12-20 08:03:09,753 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:09,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 129 [2023-12-20 08:03:09,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:09,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 142 [2023-12-20 08:03:09,922 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:09,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 141 treesize of output 145 [2023-12-20 08:03:09,951 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:09,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 135 treesize of output 158 [2023-12-20 08:03:10,074 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:10,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 154 treesize of output 161 [2023-12-20 08:03:10,107 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:10,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 148 treesize of output 174 [2023-12-20 08:03:10,249 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:10,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 167 treesize of output 177 [2023-12-20 08:03:10,290 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:10,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 161 treesize of output 190 [2023-12-20 08:03:10,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:10,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 180 treesize of output 193 [2023-12-20 08:03:10,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:10,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 174 treesize of output 206 [2023-12-20 08:03:10,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:10,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 103 treesize of output 138 [2023-12-20 08:03:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 0 proven. 547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:13,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:03:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 65 proven. 482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:14,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433088442] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:03:14,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:03:14,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 35, 34] total 86 [2023-12-20 08:03:14,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16433103] [2023-12-20 08:03:14,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:03:14,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-20 08:03:14,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:03:14,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-20 08:03:14,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1590, Invalid=5720, Unknown=0, NotChecked=0, Total=7310 [2023-12-20 08:03:14,889 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 86 states, 86 states have (on average 2.9767441860465116) internal successors, (256), 86 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:19,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:03:19,521 INFO L93 Difference]: Finished difference Result 151 states and 159 transitions. [2023-12-20 08:03:19,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-20 08:03:19,521 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.9767441860465116) internal successors, (256), 86 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-20 08:03:19,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:03:19,522 INFO L225 Difference]: With dead ends: 151 [2023-12-20 08:03:19,522 INFO L226 Difference]: Without dead ends: 103 [2023-12-20 08:03:19,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6821 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=4453, Invalid=18499, Unknown=0, NotChecked=0, Total=22952 [2023-12-20 08:03:19,523 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 265 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 2613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:03:19,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 245 Invalid, 2613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 08:03:19,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-20 08:03:19,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2023-12-20 08:03:19,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 94 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:19,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2023-12-20 08:03:19,545 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 88 [2023-12-20 08:03:19,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:03:19,545 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2023-12-20 08:03:19,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.9767441860465116) internal successors, (256), 86 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:19,545 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2023-12-20 08:03:19,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 08:03:19,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:03:19,546 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:03:19,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-20 08:03:19,750 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,SelfDestructingSolverStorable27 [2023-12-20 08:03:19,751 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:03:19,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:03:19,751 INFO L85 PathProgramCache]: Analyzing trace with hash -111294488, now seen corresponding path program 25 times [2023-12-20 08:03:19,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:03:19,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077448564] [2023-12-20 08:03:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:03:19,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:03:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:03:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 69 proven. 562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:22,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:03:22,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077448564] [2023-12-20 08:03:22,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077448564] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:03:22,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276281900] [2023-12-20 08:03:22,064 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-20 08:03:22,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:03:22,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:03:22,065 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) [2023-12-20 08:03:22,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-20 08:03:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:03:22,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 132 conjunts are in the unsatisfiable core [2023-12-20 08:03:22,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:03:22,262 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 17 treesize of output 13 [2023-12-20 08:03:22,294 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 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-20 08:03:22,299 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 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-20 08:03:22,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:22,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 33 [2023-12-20 08:03:22,372 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:22,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 46 [2023-12-20 08:03:22,423 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:22,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-12-20 08:03:22,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:22,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2023-12-20 08:03:22,498 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:22,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2023-12-20 08:03:22,511 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:22,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 78 [2023-12-20 08:03:22,588 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:22,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 81 [2023-12-20 08:03:22,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:22,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 94 [2023-12-20 08:03:22,690 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:22,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 97 [2023-12-20 08:03:22,708 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:22,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 110 [2023-12-20 08:03:22,798 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:22,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 113 [2023-12-20 08:03:22,819 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:22,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 126 [2023-12-20 08:03:22,921 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:22,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 129 [2023-12-20 08:03:22,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:22,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 142 [2023-12-20 08:03:23,089 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:23,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 141 treesize of output 145 [2023-12-20 08:03:23,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:23,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 135 treesize of output 158 [2023-12-20 08:03:23,253 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:23,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 154 treesize of output 161 [2023-12-20 08:03:23,291 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:23,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 148 treesize of output 174 [2023-12-20 08:03:23,423 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:23,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 167 treesize of output 177 [2023-12-20 08:03:23,458 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:23,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 161 treesize of output 190 [2023-12-20 08:03:23,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:23,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 180 treesize of output 193 [2023-12-20 08:03:23,659 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:23,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 174 treesize of output 206 [2023-12-20 08:03:23,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:23,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 193 treesize of output 209 [2023-12-20 08:03:23,999 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:24,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 187 treesize of output 222 [2023-12-20 08:03:24,348 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:24,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 110 treesize of output 148 [2023-12-20 08:03:27,363 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 315 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:27,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:03:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 70 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:28,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276281900] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:03:28,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:03:28,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37, 36] total 103 [2023-12-20 08:03:28,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850825279] [2023-12-20 08:03:28,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:03:28,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2023-12-20 08:03:28,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:03:28,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2023-12-20 08:03:28,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2118, Invalid=8388, Unknown=0, NotChecked=0, Total=10506 [2023-12-20 08:03:28,420 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 103 states, 103 states have (on average 2.6601941747572817) internal successors, (274), 103 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:31,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:03:31,168 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2023-12-20 08:03:31,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-20 08:03:31,168 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.6601941747572817) internal successors, (274), 103 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-20 08:03:31,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:03:31,169 INFO L225 Difference]: With dead ends: 111 [2023-12-20 08:03:31,169 INFO L226 Difference]: Without dead ends: 109 [2023-12-20 08:03:31,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5514 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=4456, Invalid=14450, Unknown=0, NotChecked=0, Total=18906 [2023-12-20 08:03:31,174 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 112 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 08:03:31,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 57 Invalid, 2108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 08:03:31,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-20 08:03:31,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2023-12-20 08:03:31,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.041237113402062) internal successors, (101), 97 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2023-12-20 08:03:31,200 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 94 [2023-12-20 08:03:31,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:03:31,200 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2023-12-20 08:03:31,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.6601941747572817) internal successors, (274), 103 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2023-12-20 08:03:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 08:03:31,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:03:31,205 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:03:31,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-20 08:03:31,410 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,SelfDestructingSolverStorable28 [2023-12-20 08:03:31,411 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:03:31,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:03:31,411 INFO L85 PathProgramCache]: Analyzing trace with hash 145997162, now seen corresponding path program 26 times [2023-12-20 08:03:31,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:03:31,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333728577] [2023-12-20 08:03:31,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:03:31,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:03:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:03:31,706 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 302 proven. 373 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:31,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:03:31,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333728577] [2023-12-20 08:03:31,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333728577] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:03:31,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637160855] [2023-12-20 08:03:31,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 08:03:31,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:03:31,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:03:31,709 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) [2023-12-20 08:03:31,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-20 08:03:31,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 08:03:31,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:03:31,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-20 08:03:31,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:03:32,201 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 345 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:32,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:03:32,630 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 374 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:32,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637160855] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:03:32,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:03:32,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 34, 34] total 51 [2023-12-20 08:03:32,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011323907] [2023-12-20 08:03:32,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:03:32,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-20 08:03:32,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:03:32,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-20 08:03:32,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1004, Invalid=1546, Unknown=0, NotChecked=0, Total=2550 [2023-12-20 08:03:32,632 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand has 51 states, 51 states have (on average 3.784313725490196) internal successors, (193), 51 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:32,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:03:32,841 INFO L93 Difference]: Finished difference Result 165 states and 172 transitions. [2023-12-20 08:03:32,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-20 08:03:32,841 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.784313725490196) internal successors, (193), 51 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-20 08:03:32,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:03:32,842 INFO L225 Difference]: With dead ends: 165 [2023-12-20 08:03:32,842 INFO L226 Difference]: Without dead ends: 102 [2023-12-20 08:03:32,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 161 SyntacticMatches, 16 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1076, Invalid=1680, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 08:03:32,843 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:03:32,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 92 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:03:32,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-20 08:03:32,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2023-12-20 08:03:32,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:32,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2023-12-20 08:03:32,865 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 97 [2023-12-20 08:03:32,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:03:32,865 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2023-12-20 08:03:32,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.784313725490196) internal successors, (193), 51 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:32,865 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2023-12-20 08:03:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 08:03:32,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:03:32,866 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:03:32,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-20 08:03:33,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:03:33,073 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:03:33,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:03:33,074 INFO L85 PathProgramCache]: Analyzing trace with hash -223870042, now seen corresponding path program 27 times [2023-12-20 08:03:33,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:03:33,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796147036] [2023-12-20 08:03:33,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:03:33,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:03:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:03:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 46 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:35,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:03:35,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796147036] [2023-12-20 08:03:35,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796147036] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:03:35,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74695460] [2023-12-20 08:03:35,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 08:03:35,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:03:35,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:03:35,185 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) [2023-12-20 08:03:35,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-20 08:03:37,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2023-12-20 08:03:37,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:03:37,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 138 conjunts are in the unsatisfiable core [2023-12-20 08:03:37,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:03:37,047 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 17 treesize of output 13 [2023-12-20 08:03:37,076 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 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-20 08:03:37,080 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 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-20 08:03:37,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 33 [2023-12-20 08:03:37,127 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 46 [2023-12-20 08:03:37,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-12-20 08:03:37,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2023-12-20 08:03:37,252 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2023-12-20 08:03:37,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 78 [2023-12-20 08:03:37,331 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 81 [2023-12-20 08:03:37,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 94 [2023-12-20 08:03:37,422 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 97 [2023-12-20 08:03:37,441 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 110 [2023-12-20 08:03:37,532 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 113 [2023-12-20 08:03:37,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 126 [2023-12-20 08:03:37,663 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 129 [2023-12-20 08:03:37,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 142 [2023-12-20 08:03:37,795 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 141 treesize of output 145 [2023-12-20 08:03:37,822 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 135 treesize of output 158 [2023-12-20 08:03:37,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 154 treesize of output 161 [2023-12-20 08:03:37,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:37,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 148 treesize of output 174 [2023-12-20 08:03:38,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:38,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 167 treesize of output 177 [2023-12-20 08:03:38,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:38,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 161 treesize of output 190 [2023-12-20 08:03:38,322 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:38,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 180 treesize of output 193 [2023-12-20 08:03:38,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:38,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 174 treesize of output 206 [2023-12-20 08:03:38,525 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:38,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 193 treesize of output 209 [2023-12-20 08:03:38,586 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:38,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 187 treesize of output 222 [2023-12-20 08:03:38,764 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:38,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 206 treesize of output 225 [2023-12-20 08:03:38,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:38,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 200 treesize of output 238 [2023-12-20 08:03:39,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:39,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 117 treesize of output 158 [2023-12-20 08:03:42,315 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 361 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:42,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:03:43,113 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 75 proven. 646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:43,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74695460] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:03:43,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:03:43,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 39, 38] total 77 [2023-12-20 08:03:43,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178809172] [2023-12-20 08:03:43,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:03:43,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-20 08:03:43,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:03:43,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-20 08:03:43,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1356, Invalid=4496, Unknown=0, NotChecked=0, Total=5852 [2023-12-20 08:03:43,115 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 77 states, 77 states have (on average 3.2337662337662336) internal successors, (249), 77 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:46,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:03:46,612 INFO L93 Difference]: Finished difference Result 110 states and 113 transitions. [2023-12-20 08:03:46,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-20 08:03:46,612 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.2337662337662336) internal successors, (249), 77 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 08:03:46,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:03:46,613 INFO L225 Difference]: With dead ends: 110 [2023-12-20 08:03:46,613 INFO L226 Difference]: Without dead ends: 108 [2023-12-20 08:03:46,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 155 SyntacticMatches, 19 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4064 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=3206, Invalid=9676, Unknown=0, NotChecked=0, Total=12882 [2023-12-20 08:03:46,614 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 59 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 08:03:46,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 61 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2178 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 08:03:46,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-20 08:03:46,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2023-12-20 08:03:46,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2023-12-20 08:03:46,636 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 100 [2023-12-20 08:03:46,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:03:46,636 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2023-12-20 08:03:46,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.2337662337662336) internal successors, (249), 77 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:46,637 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2023-12-20 08:03:46,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 08:03:46,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:03:46,637 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:03:46,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-20 08:03:46,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:03:46,845 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:03:46,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:03:46,845 INFO L85 PathProgramCache]: Analyzing trace with hash 777126124, now seen corresponding path program 28 times [2023-12-20 08:03:46,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:03:46,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694275307] [2023-12-20 08:03:46,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:03:46,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:03:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:03:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 346 proven. 422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:47,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:03:47,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694275307] [2023-12-20 08:03:47,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694275307] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:03:47,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444466070] [2023-12-20 08:03:47,179 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 08:03:47,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:03:47,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:03:47,180 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) [2023-12-20 08:03:47,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-20 08:03:47,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 08:03:47,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:03:47,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-20 08:03:47,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:03:47,874 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 392 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:47,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:03:48,373 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 423 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:48,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444466070] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:03:48,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:03:48,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 36, 36] total 54 [2023-12-20 08:03:48,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385360850] [2023-12-20 08:03:48,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:03:48,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-20 08:03:48,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:03:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-20 08:03:48,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1126, Invalid=1736, Unknown=0, NotChecked=0, Total=2862 [2023-12-20 08:03:48,375 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand has 54 states, 54 states have (on average 3.7962962962962963) internal successors, (205), 54 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:48,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:03:48,568 INFO L93 Difference]: Finished difference Result 169 states and 174 transitions. [2023-12-20 08:03:48,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-20 08:03:48,569 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.7962962962962963) internal successors, (205), 54 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-20 08:03:48,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:03:48,569 INFO L225 Difference]: With dead ends: 169 [2023-12-20 08:03:48,569 INFO L226 Difference]: Without dead ends: 108 [2023-12-20 08:03:48,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 171 SyntacticMatches, 17 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1164, Invalid=1806, Unknown=0, NotChecked=0, Total=2970 [2023-12-20 08:03:48,570 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:03:48,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 130 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:03:48,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-20 08:03:48,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2023-12-20 08:03:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.028301886792453) internal successors, (109), 106 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:48,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2023-12-20 08:03:48,595 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 103 [2023-12-20 08:03:48,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:03:48,595 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2023-12-20 08:03:48,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.7962962962962963) internal successors, (205), 54 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:03:48,595 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2023-12-20 08:03:48,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 08:03:48,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:03:48,595 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:03:48,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-20 08:03:48,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:03:48,803 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:03:48,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:03:48,803 INFO L85 PathProgramCache]: Analyzing trace with hash 728738344, now seen corresponding path program 29 times [2023-12-20 08:03:48,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:03:48,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892777619] [2023-12-20 08:03:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:03:48,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:03:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:03:51,840 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 74 proven. 743 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:03:51,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:03:51,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892777619] [2023-12-20 08:03:51,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892777619] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:03:51,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89733610] [2023-12-20 08:03:51,842 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 08:03:51,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:03:51,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:03:51,843 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) [2023-12-20 08:03:51,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-20 08:03:53,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-12-20 08:03:53,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:03:53,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 147 conjunts are in the unsatisfiable core [2023-12-20 08:03:53,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:03:53,591 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 17 treesize of output 13 [2023-12-20 08:03:53,626 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 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-20 08:03:53,631 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 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-20 08:03:53,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2023-12-20 08:03:53,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:53,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 60 [2023-12-20 08:03:53,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:53,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 63 [2023-12-20 08:03:53,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:53,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 65 [2023-12-20 08:03:53,871 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:53,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2023-12-20 08:03:53,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:53,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 78 [2023-12-20 08:03:53,960 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:53,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 81 [2023-12-20 08:03:53,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:53,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 94 [2023-12-20 08:03:54,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:54,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 97 [2023-12-20 08:03:54,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:54,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 110 [2023-12-20 08:03:54,185 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:54,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 113 [2023-12-20 08:03:54,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:54,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 126 [2023-12-20 08:03:54,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:54,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 129 [2023-12-20 08:03:54,374 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:54,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 142 [2023-12-20 08:03:54,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:54,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 141 treesize of output 145 [2023-12-20 08:03:54,521 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:54,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 135 treesize of output 158 [2023-12-20 08:03:54,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:54,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 154 treesize of output 161 [2023-12-20 08:03:54,686 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:54,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 148 treesize of output 174 [2023-12-20 08:03:54,841 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:54,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 167 treesize of output 177 [2023-12-20 08:03:54,879 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:54,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 161 treesize of output 190 [2023-12-20 08:03:55,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:55,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 180 treesize of output 193 [2023-12-20 08:03:55,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:55,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 174 treesize of output 206 [2023-12-20 08:03:55,281 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:55,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 193 treesize of output 209 [2023-12-20 08:03:55,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:55,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 187 treesize of output 222 [2023-12-20 08:03:55,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:55,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 206 treesize of output 225 [2023-12-20 08:03:55,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:55,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 200 treesize of output 238 [2023-12-20 08:03:55,858 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:55,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 219 treesize of output 241 [2023-12-20 08:03:55,913 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:55,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 213 treesize of output 254 [2023-12-20 08:03:56,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:03:56,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 124 treesize of output 168 [2023-12-20 08:04:00,348 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 356 proven. 461 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:04:00,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:04:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 80 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:04:01,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89733610] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:04:01,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:04:01,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 42, 40] total 113 [2023-12-20 08:04:01,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131444715] [2023-12-20 08:04:01,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:04:01,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2023-12-20 08:04:01,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:04:01,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2023-12-20 08:04:01,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2444, Invalid=10212, Unknown=0, NotChecked=0, Total=12656 [2023-12-20 08:04:01,635 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand has 113 states, 113 states have (on average 2.743362831858407) internal successors, (310), 113 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:04:06,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:04:06,777 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2023-12-20 08:04:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-20 08:04:06,778 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.743362831858407) internal successors, (310), 113 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-20 08:04:06,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:04:06,778 INFO L225 Difference]: With dead ends: 117 [2023-12-20 08:04:06,778 INFO L226 Difference]: Without dead ends: 115 [2023-12-20 08:04:06,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7725 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=5990, Invalid=21732, Unknown=0, NotChecked=0, Total=27722 [2023-12-20 08:04:06,780 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 70 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 2871 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 08:04:06,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 69 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2871 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 08:04:06,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-20 08:04:06,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 110. [2023-12-20 08:04:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 109 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:04:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2023-12-20 08:04:06,805 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 106 [2023-12-20 08:04:06,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:04:06,805 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2023-12-20 08:04:06,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.743362831858407) internal successors, (310), 113 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:04:06,805 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2023-12-20 08:04:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-20 08:04:06,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:04:06,806 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:04:06,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-20 08:04:07,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:04:07,014 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:04:07,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:04:07,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1210338518, now seen corresponding path program 30 times [2023-12-20 08:04:07,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:04:07,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514629821] [2023-12-20 08:04:07,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:04:07,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:04:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:04:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 393 proven. 474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:04:07,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:04:07,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514629821] [2023-12-20 08:04:07,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514629821] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:04:07,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093838275] [2023-12-20 08:04:07,319 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 08:04:07,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:04:07,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:04:07,320 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) [2023-12-20 08:04:07,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-20 08:04:11,534 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2023-12-20 08:04:11,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:04:11,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-20 08:04:11,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:04:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 442 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:04:11,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:04:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 475 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:04:12,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093838275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:04:12,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:04:12,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 38, 38] total 57 [2023-12-20 08:04:12,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015730089] [2023-12-20 08:04:12,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:04:12,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-20 08:04:12,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:04:12,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-20 08:04:12,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1255, Invalid=1937, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 08:04:12,329 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand has 57 states, 57 states have (on average 3.807017543859649) internal successors, (217), 57 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:04:12,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:04:12,604 INFO L93 Difference]: Finished difference Result 178 states and 183 transitions. [2023-12-20 08:04:12,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-20 08:04:12,604 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.807017543859649) internal successors, (217), 57 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-20 08:04:12,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:04:12,605 INFO L225 Difference]: With dead ends: 178 [2023-12-20 08:04:12,605 INFO L226 Difference]: Without dead ends: 114 [2023-12-20 08:04:12,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 181 SyntacticMatches, 18 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2056 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1295, Invalid=2011, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 08:04:12,605 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 08:04:12,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 152 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 08:04:12,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-20 08:04:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2023-12-20 08:04:12,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 112 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:04:12,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2023-12-20 08:04:12,631 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 109 [2023-12-20 08:04:12,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:04:12,631 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2023-12-20 08:04:12,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.807017543859649) internal successors, (217), 57 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:04:12,631 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2023-12-20 08:04:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 08:04:12,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:04:12,632 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:04:12,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-20 08:04:12,840 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,SelfDestructingSolverStorable33 [2023-12-20 08:04:12,840 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:04:12,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:04:12,840 INFO L85 PathProgramCache]: Analyzing trace with hash 239894374, now seen corresponding path program 31 times [2023-12-20 08:04:12,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:04:12,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174924627] [2023-12-20 08:04:12,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:04:12,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:04:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:04:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 52 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:04:15,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:04:15,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174924627] [2023-12-20 08:04:15,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174924627] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:04:15,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861465992] [2023-12-20 08:04:15,593 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-20 08:04:15,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:04:15,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:04:15,594 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) [2023-12-20 08:04:15,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-20 08:04:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:04:15,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 156 conjunts are in the unsatisfiable core [2023-12-20 08:04:15,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:04:15,840 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 17 treesize of output 13 [2023-12-20 08:04:15,872 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 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-20 08:04:15,877 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 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-20 08:04:15,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:15,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 33 [2023-12-20 08:04:15,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:15,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 46 [2023-12-20 08:04:15,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:15,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-12-20 08:04:15,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:15,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2023-12-20 08:04:16,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:16,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2023-12-20 08:04:16,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:16,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 78 [2023-12-20 08:04:16,143 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:16,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 81 [2023-12-20 08:04:16,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:16,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 94 [2023-12-20 08:04:16,258 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:16,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 97 [2023-12-20 08:04:16,278 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:16,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 110 [2023-12-20 08:04:16,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:16,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 113 [2023-12-20 08:04:16,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:16,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 126 [2023-12-20 08:04:16,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:16,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 129 [2023-12-20 08:04:16,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:16,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 142 [2023-12-20 08:04:16,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:16,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 141 treesize of output 145 [2023-12-20 08:04:16,682 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:16,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 135 treesize of output 158 [2023-12-20 08:04:16,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:16,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 154 treesize of output 161 [2023-12-20 08:04:16,837 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:16,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 148 treesize of output 174 [2023-12-20 08:04:16,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:16,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 167 treesize of output 177 [2023-12-20 08:04:17,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:17,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 161 treesize of output 190 [2023-12-20 08:04:17,183 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:17,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 180 treesize of output 193 [2023-12-20 08:04:17,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:17,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 174 treesize of output 206 [2023-12-20 08:04:17,401 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:17,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 193 treesize of output 209 [2023-12-20 08:04:17,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:17,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 187 treesize of output 222 [2023-12-20 08:04:17,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:17,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 206 treesize of output 225 [2023-12-20 08:04:17,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:17,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 200 treesize of output 238 [2023-12-20 08:04:17,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:17,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 219 treesize of output 241 [2023-12-20 08:04:17,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:17,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 213 treesize of output 254 [2023-12-20 08:04:18,193 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:18,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 232 treesize of output 257 [2023-12-20 08:04:18,393 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:18,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 226 treesize of output 270 [2023-12-20 08:04:18,796 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:18,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 153 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 131 treesize of output 178 [2023-12-20 08:04:22,754 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 459 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:04:22,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:04:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 85 proven. 834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:04:23,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861465992] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:04:23,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:04:23,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 43, 42] total 85 [2023-12-20 08:04:23,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419229633] [2023-12-20 08:04:23,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:04:23,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2023-12-20 08:04:23,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:04:23,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2023-12-20 08:04:23,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1648, Invalid=5492, Unknown=0, NotChecked=0, Total=7140 [2023-12-20 08:04:23,511 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand has 85 states, 85 states have (on average 3.2588235294117647) internal successors, (277), 85 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:04:27,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:04:27,852 INFO L93 Difference]: Finished difference Result 123 states and 126 transitions. [2023-12-20 08:04:27,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-20 08:04:27,853 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 3.2588235294117647) internal successors, (277), 85 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2023-12-20 08:04:27,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:04:27,853 INFO L225 Difference]: With dead ends: 123 [2023-12-20 08:04:27,853 INFO L226 Difference]: Without dead ends: 121 [2023-12-20 08:04:27,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 175 SyntacticMatches, 21 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4887 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=3800, Invalid=11700, Unknown=0, NotChecked=0, Total=15500 [2023-12-20 08:04:27,854 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 106 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 2402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 08:04:27,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 51 Invalid, 2402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 08:04:27,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-20 08:04:27,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 116. [2023-12-20 08:04:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 115 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:04:27,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2023-12-20 08:04:27,888 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 112 [2023-12-20 08:04:27,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:04:27,888 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2023-12-20 08:04:27,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 3.2588235294117647) internal successors, (277), 85 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:04:27,889 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2023-12-20 08:04:27,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 08:04:27,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:04:27,889 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:04:27,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-20 08:04:28,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:04:28,095 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:04:28,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:04:28,096 INFO L85 PathProgramCache]: Analyzing trace with hash -126948052, now seen corresponding path program 32 times [2023-12-20 08:04:28,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:04:28,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237103059] [2023-12-20 08:04:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:04:28,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:04:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:04:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 443 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:04:28,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:04:28,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237103059] [2023-12-20 08:04:28,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237103059] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:04:28,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220285816] [2023-12-20 08:04:28,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 08:04:28,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:04:28,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:04:28,495 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) [2023-12-20 08:04:28,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-20 08:04:28,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 08:04:28,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:04:28,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 08:04:28,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:04:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 495 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:04:29,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:04:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 530 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:04:29,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220285816] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:04:29,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:04:29,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 40, 40] total 60 [2023-12-20 08:04:29,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726946856] [2023-12-20 08:04:29,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:04:29,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-20 08:04:29,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:04:29,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-20 08:04:29,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1391, Invalid=2149, Unknown=0, NotChecked=0, Total=3540 [2023-12-20 08:04:29,726 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand has 60 states, 60 states have (on average 3.816666666666667) internal successors, (229), 60 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:04:30,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:04:30,004 INFO L93 Difference]: Finished difference Result 187 states and 192 transitions. [2023-12-20 08:04:30,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-20 08:04:30,004 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.816666666666667) internal successors, (229), 60 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-20 08:04:30,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:04:30,005 INFO L225 Difference]: With dead ends: 187 [2023-12-20 08:04:30,005 INFO L226 Difference]: Without dead ends: 120 [2023-12-20 08:04:30,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 191 SyntacticMatches, 19 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1433, Invalid=2227, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 08:04:30,005 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 08:04:30,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 136 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 08:04:30,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-20 08:04:30,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2023-12-20 08:04:30,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0254237288135593) internal successors, (121), 118 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:04:30,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2023-12-20 08:04:30,034 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 115 [2023-12-20 08:04:30,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:04:30,034 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2023-12-20 08:04:30,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.816666666666667) internal successors, (229), 60 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:04:30,034 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2023-12-20 08:04:30,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-20 08:04:30,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:04:30,034 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:04:30,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-20 08:04:30,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:04:30,240 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:04:30,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:04:30,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1744003992, now seen corresponding path program 33 times [2023-12-20 08:04:30,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:04:30,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763150192] [2023-12-20 08:04:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:04:30,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:04:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:04:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 55 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:04:33,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:04:33,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763150192] [2023-12-20 08:04:33,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763150192] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:04:33,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956830442] [2023-12-20 08:04:33,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 08:04:33,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:04:33,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:04:33,368 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) [2023-12-20 08:04:33,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-20 08:04:39,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2023-12-20 08:04:39,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:04:39,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 164 conjunts are in the unsatisfiable core [2023-12-20 08:04:39,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:04:39,268 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 17 treesize of output 13 [2023-12-20 08:04:39,305 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 37 treesize of output 17 [2023-12-20 08:04:39,312 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 31 treesize of output 30 [2023-12-20 08:04:39,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:39,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 33 [2023-12-20 08:04:39,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:39,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2023-12-20 08:04:39,424 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:39,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-12-20 08:04:39,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:39,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2023-12-20 08:04:39,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:39,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2023-12-20 08:04:39,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:39,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 78 [2023-12-20 08:04:39,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:39,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 81 [2023-12-20 08:04:39,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:39,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 94 [2023-12-20 08:04:39,754 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:39,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 97 [2023-12-20 08:04:39,772 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:39,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 110 [2023-12-20 08:04:39,857 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:39,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 113 [2023-12-20 08:04:39,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:39,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 126 [2023-12-20 08:04:39,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:39,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 129 [2023-12-20 08:04:40,004 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:40,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 142 [2023-12-20 08:04:40,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:40,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 141 treesize of output 145 [2023-12-20 08:04:40,154 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:40,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 135 treesize of output 158 [2023-12-20 08:04:40,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:40,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 154 treesize of output 161 [2023-12-20 08:04:40,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:40,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 148 treesize of output 174 [2023-12-20 08:04:40,465 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:40,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 167 treesize of output 177 [2023-12-20 08:04:40,506 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:40,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 161 treesize of output 190 [2023-12-20 08:04:40,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:40,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 180 treesize of output 193 [2023-12-20 08:04:40,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:40,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 174 treesize of output 206 [2023-12-20 08:04:40,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:40,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 193 treesize of output 209 [2023-12-20 08:04:40,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:40,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 187 treesize of output 222 [2023-12-20 08:04:41,157 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:41,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 206 treesize of output 225 [2023-12-20 08:04:41,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:41,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 200 treesize of output 238 [2023-12-20 08:04:41,420 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:41,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 219 treesize of output 241 [2023-12-20 08:04:41,476 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:41,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 213 treesize of output 254 [2023-12-20 08:04:41,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:41,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 232 treesize of output 257 [2023-12-20 08:04:41,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:41,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 226 treesize of output 270 [2023-12-20 08:04:42,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:42,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 153 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 245 treesize of output 273 [2023-12-20 08:04:42,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:42,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 153 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 239 treesize of output 286 [2023-12-20 08:04:42,761 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:04:42,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 171 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 138 treesize of output 188 [2023-12-20 08:04:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:04:47,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:04:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 90 proven. 937 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:04:49,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956830442] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:04:49,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:04:49,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 45, 44] total 110 [2023-12-20 08:04:49,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779679329] [2023-12-20 08:04:49,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:04:49,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2023-12-20 08:04:49,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:04:49,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2023-12-20 08:04:49,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=9432, Unknown=0, NotChecked=0, Total=11990 [2023-12-20 08:04:49,580 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand has 110 states, 110 states have (on average 3.1454545454545455) internal successors, (346), 110 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:04:58,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:04:58,856 INFO L93 Difference]: Finished difference Result 196 states and 204 transitions. [2023-12-20 08:04:58,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2023-12-20 08:04:58,857 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 3.1454545454545455) internal successors, (346), 110 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-20 08:04:58,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:04:58,858 INFO L225 Difference]: With dead ends: 196 [2023-12-20 08:04:58,858 INFO L226 Difference]: Without dead ends: 133 [2023-12-20 08:04:58,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11618 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=7261, Invalid=31745, Unknown=0, NotChecked=0, Total=39006 [2023-12-20 08:04:58,860 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 493 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 4179 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 4378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 4179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-20 08:04:58,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 493 Invalid, 4378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 4179 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-20 08:04:58,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-12-20 08:04:58,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 125. [2023-12-20 08:04:58,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.032258064516129) internal successors, (128), 124 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:04:58,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 128 transitions. [2023-12-20 08:04:58,894 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 128 transitions. Word has length 118 [2023-12-20 08:04:58,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:04:58,894 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 128 transitions. [2023-12-20 08:04:58,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 3.1454545454545455) internal successors, (346), 110 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:04:58,895 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 128 transitions. [2023-12-20 08:04:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-20 08:04:58,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:04:58,895 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:04:58,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-20 08:04:59,105 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,SelfDestructingSolverStorable36 [2023-12-20 08:04:59,105 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:04:59,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:04:59,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1573721306, now seen corresponding path program 34 times [2023-12-20 08:04:59,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:04:59,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735227379] [2023-12-20 08:04:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:04:59,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:04:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:05:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 58 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:05:02,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:05:02,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735227379] [2023-12-20 08:05:02,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735227379] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:05:02,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110297718] [2023-12-20 08:05:02,662 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 08:05:02,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:05:02,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:05:02,663 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) [2023-12-20 08:05:02,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-20 08:05:02,922 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 08:05:02,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:05:02,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 169 conjunts are in the unsatisfiable core [2023-12-20 08:05:02,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:05:02,934 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 18 treesize of output 14 [2023-12-20 08:05:02,962 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 0 case distinctions, treesize of input 40 treesize of output 18 [2023-12-20 08:05:02,965 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 0 case distinctions, treesize of input 33 treesize of output 32 [2023-12-20 08:05:03,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 54 treesize of output 35 [2023-12-20 08:05:03,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 47 treesize of output 49 [2023-12-20 08:05:03,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 52 [2023-12-20 08:05:03,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 66 [2023-12-20 08:05:03,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 69 [2023-12-20 08:05:03,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 83 [2023-12-20 08:05:03,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 96 treesize of output 86 [2023-12-20 08:05:03,209 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 100 [2023-12-20 08:05:03,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 103 [2023-12-20 08:05:03,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 103 treesize of output 117 [2023-12-20 08:05:03,381 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 124 treesize of output 120 [2023-12-20 08:05:03,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 117 treesize of output 134 [2023-12-20 08:05:03,490 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 138 treesize of output 137 [2023-12-20 08:05:03,511 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 131 treesize of output 151 [2023-12-20 08:05:03,648 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 152 treesize of output 154 [2023-12-20 08:05:03,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 145 treesize of output 168 [2023-12-20 08:05:03,788 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 166 treesize of output 171 [2023-12-20 08:05:03,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 159 treesize of output 185 [2023-12-20 08:05:03,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 180 treesize of output 188 [2023-12-20 08:05:03,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:03,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 173 treesize of output 202 [2023-12-20 08:05:04,122 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:04,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 194 treesize of output 205 [2023-12-20 08:05:04,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:04,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 187 treesize of output 219 [2023-12-20 08:05:04,318 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:04,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 208 treesize of output 222 [2023-12-20 08:05:04,355 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:04,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 201 treesize of output 236 [2023-12-20 08:05:04,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:04,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 222 treesize of output 239 [2023-12-20 08:05:04,584 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:04,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 215 treesize of output 253 [2023-12-20 08:05:04,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:04,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 236 treesize of output 256 [2023-12-20 08:05:04,855 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:04,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 229 treesize of output 270 [2023-12-20 08:05:05,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:05,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 250 treesize of output 273 [2023-12-20 08:05:05,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:05,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 243 treesize of output 287 [2023-12-20 08:05:05,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:05,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 264 treesize of output 290 [2023-12-20 08:05:05,419 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:05,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 257 treesize of output 304 [2023-12-20 08:05:05,696 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:05,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 278 treesize of output 307 [2023-12-20 08:05:05,788 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:05,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 271 treesize of output 321 [2023-12-20 08:05:06,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:06,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 183 treesize of output 236 [2023-12-20 08:05:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 571 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:05:12,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:05:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 95 proven. 1046 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:05:13,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110297718] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:05:13,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:05:13,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 46, 46] total 93 [2023-12-20 08:05:13,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705262322] [2023-12-20 08:05:13,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:05:13,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-12-20 08:05:13,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:05:13,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-12-20 08:05:13,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1948, Invalid=6608, Unknown=0, NotChecked=0, Total=8556 [2023-12-20 08:05:13,829 INFO L87 Difference]: Start difference. First operand 125 states and 128 transitions. Second operand has 93 states, 93 states have (on average 3.2688172043010755) internal successors, (304), 93 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:05:20,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:05:20,603 INFO L93 Difference]: Finished difference Result 141 states and 147 transitions. [2023-12-20 08:05:20,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-20 08:05:20,604 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 3.2688172043010755) internal successors, (304), 93 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2023-12-20 08:05:20,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:05:20,604 INFO L225 Difference]: With dead ends: 141 [2023-12-20 08:05:20,604 INFO L226 Difference]: Without dead ends: 139 [2023-12-20 08:05:20,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 196 SyntacticMatches, 22 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5812 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=4422, Invalid=13938, Unknown=0, NotChecked=0, Total=18360 [2023-12-20 08:05:20,606 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 123 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 2922 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 2969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 08:05:20,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 62 Invalid, 2969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2922 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 08:05:20,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-20 08:05:20,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 128. [2023-12-20 08:05:20,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.031496062992126) internal successors, (131), 127 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:05:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 131 transitions. [2023-12-20 08:05:20,660 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 131 transitions. Word has length 124 [2023-12-20 08:05:20,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:05:20,660 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 131 transitions. [2023-12-20 08:05:20,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 3.2688172043010755) internal successors, (304), 93 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:05:20,660 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 131 transitions. [2023-12-20 08:05:20,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-20 08:05:20,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:05:20,660 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:05:20,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-20 08:05:20,865 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,SelfDestructingSolverStorable37 [2023-12-20 08:05:20,866 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:05:20,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:05:20,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1136912748, now seen corresponding path program 35 times [2023-12-20 08:05:20,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:05:20,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998094802] [2023-12-20 08:05:20,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:05:20,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:05:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:05:21,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 552 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:05:21,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:05:21,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998094802] [2023-12-20 08:05:21,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998094802] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:05:21,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774519985] [2023-12-20 08:05:21,343 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 08:05:21,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:05:21,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:05:21,344 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) [2023-12-20 08:05:21,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-20 08:05:23,864 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2023-12-20 08:05:23,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:05:23,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-20 08:05:23,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:05:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 610 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:05:24,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:05:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 649 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:05:25,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774519985] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:05:25,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:05:25,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 44, 44] total 66 [2023-12-20 08:05:25,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469781996] [2023-12-20 08:05:25,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:05:25,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-20 08:05:25,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:05:25,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-20 08:05:25,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=2606, Unknown=0, NotChecked=0, Total=4290 [2023-12-20 08:05:25,075 INFO L87 Difference]: Start difference. First operand 128 states and 131 transitions. Second operand has 66 states, 66 states have (on average 3.8333333333333335) internal successors, (253), 66 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:05:25,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:05:25,418 INFO L93 Difference]: Finished difference Result 210 states and 217 transitions. [2023-12-20 08:05:25,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-20 08:05:25,418 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.8333333333333335) internal successors, (253), 66 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2023-12-20 08:05:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:05:25,419 INFO L225 Difference]: With dead ends: 210 [2023-12-20 08:05:25,419 INFO L226 Difference]: Without dead ends: 132 [2023-12-20 08:05:25,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 211 SyntacticMatches, 21 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2820 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1776, Invalid=2780, Unknown=0, NotChecked=0, Total=4556 [2023-12-20 08:05:25,420 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 08:05:25,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 160 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 08:05:25,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-20 08:05:25,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2023-12-20 08:05:25,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.023076923076923) internal successors, (133), 130 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:05:25,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2023-12-20 08:05:25,479 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 127 [2023-12-20 08:05:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:05:25,479 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2023-12-20 08:05:25,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.8333333333333335) internal successors, (253), 66 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:05:25,479 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2023-12-20 08:05:25,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-20 08:05:25,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:05:25,479 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:05:25,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-20 08:05:25,688 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,SelfDestructingSolverStorable38 [2023-12-20 08:05:25,689 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:05:25,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:05:25,689 INFO L85 PathProgramCache]: Analyzing trace with hash -670523736, now seen corresponding path program 36 times [2023-12-20 08:05:25,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:05:25,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310556182] [2023-12-20 08:05:25,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:05:25,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:05:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:05:29,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 61 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:05:29,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:05:29,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310556182] [2023-12-20 08:05:29,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310556182] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:05:29,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621883384] [2023-12-20 08:05:29,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 08:05:29,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:05:29,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:05:29,618 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) [2023-12-20 08:05:29,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-20 08:05:47,395 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2023-12-20 08:05:47,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:05:47,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 180 conjunts are in the unsatisfiable core [2023-12-20 08:05:47,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:05:47,458 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 17 treesize of output 13 [2023-12-20 08:05:47,495 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 37 treesize of output 17 [2023-12-20 08:05:47,503 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 31 treesize of output 30 [2023-12-20 08:05:47,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:47,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 33 [2023-12-20 08:05:47,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:47,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2023-12-20 08:05:47,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:47,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-12-20 08:05:47,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:47,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2023-12-20 08:05:47,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:47,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2023-12-20 08:05:47,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:47,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 78 [2023-12-20 08:05:47,798 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:47,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 81 [2023-12-20 08:05:47,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:47,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 94 [2023-12-20 08:05:47,907 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:47,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 97 [2023-12-20 08:05:47,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:47,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 110 [2023-12-20 08:05:48,032 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:48,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 113 [2023-12-20 08:05:48,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:48,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 126 [2023-12-20 08:05:48,177 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:48,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 129 [2023-12-20 08:05:48,204 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:48,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 142 [2023-12-20 08:05:48,335 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:48,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 141 treesize of output 145 [2023-12-20 08:05:48,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:48,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 135 treesize of output 158 [2023-12-20 08:05:48,516 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:48,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 154 treesize of output 161 [2023-12-20 08:05:48,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:48,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 148 treesize of output 174 [2023-12-20 08:05:48,743 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:48,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 167 treesize of output 177 [2023-12-20 08:05:48,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:48,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 161 treesize of output 190 [2023-12-20 08:05:48,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:48,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 180 treesize of output 193 [2023-12-20 08:05:49,020 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:49,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 174 treesize of output 206 [2023-12-20 08:05:49,206 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:49,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 193 treesize of output 209 [2023-12-20 08:05:49,258 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:49,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 187 treesize of output 222 [2023-12-20 08:05:49,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:49,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 206 treesize of output 225 [2023-12-20 08:05:49,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:49,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 200 treesize of output 238 [2023-12-20 08:05:49,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:49,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 219 treesize of output 241 [2023-12-20 08:05:49,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:49,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 213 treesize of output 254 [2023-12-20 08:05:50,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:50,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 232 treesize of output 257 [2023-12-20 08:05:50,107 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:50,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 226 treesize of output 270 [2023-12-20 08:05:50,346 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:50,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 153 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 245 treesize of output 273 [2023-12-20 08:05:50,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:50,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 153 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 239 treesize of output 286 [2023-12-20 08:05:50,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:50,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 171 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 258 treesize of output 289 [2023-12-20 08:05:50,775 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:50,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 171 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 252 treesize of output 302 [2023-12-20 08:05:51,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:51,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 190 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 271 treesize of output 305 [2023-12-20 08:05:51,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:51,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 190 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 265 treesize of output 318 [2023-12-20 08:05:51,908 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:05:51,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 210 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 152 treesize of output 208 [2023-12-20 08:05:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 0 proven. 1261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:05:58,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:06:01,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 100 proven. 1161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:06:01,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621883384] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:06:01,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:06:01,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 49, 48] total 120 [2023-12-20 08:06:01,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517598855] [2023-12-20 08:06:01,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:06:01,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2023-12-20 08:06:01,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:06:01,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2023-12-20 08:06:01,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3030, Invalid=11250, Unknown=0, NotChecked=0, Total=14280 [2023-12-20 08:06:01,183 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand has 120 states, 120 states have (on average 3.183333333333333) internal successors, (382), 120 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:12,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:06:12,053 INFO L93 Difference]: Finished difference Result 214 states and 222 transitions. [2023-12-20 08:06:12,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-12-20 08:06:12,053 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 3.183333333333333) internal successors, (382), 120 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-20 08:06:12,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:06:12,054 INFO L225 Difference]: With dead ends: 214 [2023-12-20 08:06:12,054 INFO L226 Difference]: Without dead ends: 145 [2023-12-20 08:06:12,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13897 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=8570, Invalid=37870, Unknown=0, NotChecked=0, Total=46440 [2023-12-20 08:06:12,056 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 617 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 5343 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 5619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 5343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-20 08:06:12,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 595 Invalid, 5619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 5343 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-20 08:06:12,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-20 08:06:12,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 137. [2023-12-20 08:06:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0294117647058822) internal successors, (140), 136 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2023-12-20 08:06:12,113 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 130 [2023-12-20 08:06:12,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:06:12,114 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2023-12-20 08:06:12,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 3.183333333333333) internal successors, (382), 120 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:12,114 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2023-12-20 08:06:12,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-20 08:06:12,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:06:12,114 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:06:12,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-20 08:06:12,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-20 08:06:12,327 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:06:12,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:06:12,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1836628250, now seen corresponding path program 37 times [2023-12-20 08:06:12,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:06:12,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168351196] [2023-12-20 08:06:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:06:12,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:06:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:06:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 89 proven. 1298 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:06:17,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:06:17,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168351196] [2023-12-20 08:06:17,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168351196] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:06:17,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911345730] [2023-12-20 08:06:17,877 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-20 08:06:17,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:06:17,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:06:17,880 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) [2023-12-20 08:06:17,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-20 08:06:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:06:18,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 187 conjunts are in the unsatisfiable core [2023-12-20 08:06:18,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:06:18,235 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 17 treesize of output 13 [2023-12-20 08:06:18,274 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 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-20 08:06:18,278 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 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-20 08:06:18,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:18,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 33 [2023-12-20 08:06:18,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:18,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 46 [2023-12-20 08:06:18,391 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:18,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-12-20 08:06:18,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:18,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2023-12-20 08:06:18,453 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:18,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2023-12-20 08:06:18,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:18,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 78 [2023-12-20 08:06:18,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:18,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 81 [2023-12-20 08:06:18,539 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:18,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 94 [2023-12-20 08:06:18,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:18,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 97 [2023-12-20 08:06:18,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:18,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 110 [2023-12-20 08:06:18,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:18,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 113 [2023-12-20 08:06:18,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:18,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 126 [2023-12-20 08:06:18,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:18,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 129 [2023-12-20 08:06:18,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:18,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 142 [2023-12-20 08:06:18,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:18,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 141 treesize of output 145 [2023-12-20 08:06:18,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:18,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 135 treesize of output 158 [2023-12-20 08:06:19,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:19,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 154 treesize of output 161 [2023-12-20 08:06:19,129 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:19,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 148 treesize of output 174 [2023-12-20 08:06:19,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:19,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 167 treesize of output 177 [2023-12-20 08:06:19,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:19,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 161 treesize of output 190 [2023-12-20 08:06:19,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:19,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 180 treesize of output 193 [2023-12-20 08:06:19,506 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:19,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 174 treesize of output 206 [2023-12-20 08:06:19,697 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:19,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 193 treesize of output 209 [2023-12-20 08:06:19,741 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:19,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 187 treesize of output 222 [2023-12-20 08:06:19,955 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:19,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 206 treesize of output 225 [2023-12-20 08:06:20,004 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:20,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 200 treesize of output 238 [2023-12-20 08:06:20,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:20,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 219 treesize of output 241 [2023-12-20 08:06:20,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:20,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 213 treesize of output 254 [2023-12-20 08:06:20,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:20,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 232 treesize of output 257 [2023-12-20 08:06:20,618 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:20,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 226 treesize of output 270 [2023-12-20 08:06:20,890 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:20,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 245 treesize of output 273 [2023-12-20 08:06:20,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:20,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 239 treesize of output 286 [2023-12-20 08:06:21,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:21,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 258 treesize of output 289 [2023-12-20 08:06:21,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:21,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 252 treesize of output 302 [2023-12-20 08:06:21,606 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:21,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 271 treesize of output 305 [2023-12-20 08:06:21,715 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:21,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 265 treesize of output 318 [2023-12-20 08:06:22,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:22,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 210 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 284 treesize of output 321 [2023-12-20 08:06:22,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:22,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 210 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 278 treesize of output 334 [2023-12-20 08:06:22,936 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:22,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 231 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 210 case distinctions, treesize of input 159 treesize of output 218 [2023-12-20 08:06:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 693 proven. 694 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:06:29,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:06:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 105 proven. 1282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:06:32,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911345730] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:06:32,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:06:32,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 51, 50] total 137 [2023-12-20 08:06:32,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25374258] [2023-12-20 08:06:32,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:06:32,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2023-12-20 08:06:32,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:06:32,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2023-12-20 08:06:32,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3590, Invalid=15042, Unknown=0, NotChecked=0, Total=18632 [2023-12-20 08:06:32,007 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand has 137 states, 137 states have (on average 2.9197080291970803) internal successors, (400), 137 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:39,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:06:39,396 INFO L93 Difference]: Finished difference Result 153 states and 159 transitions. [2023-12-20 08:06:39,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-20 08:06:39,397 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 2.9197080291970803) internal successors, (400), 137 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-20 08:06:39,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:06:39,397 INFO L225 Difference]: With dead ends: 153 [2023-12-20 08:06:39,397 INFO L226 Difference]: Without dead ends: 151 [2023-12-20 08:06:39,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10372 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=8341, Invalid=27569, Unknown=0, NotChecked=0, Total=35910 [2023-12-20 08:06:39,399 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 143 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 3568 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 3612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:06:39,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 74 Invalid, 3612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3568 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 08:06:39,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-20 08:06:39,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 140. [2023-12-20 08:06:39,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.0287769784172662) internal successors, (143), 139 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:39,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 143 transitions. [2023-12-20 08:06:39,462 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 143 transitions. Word has length 136 [2023-12-20 08:06:39,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:06:39,476 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 143 transitions. [2023-12-20 08:06:39,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 2.9197080291970803) internal successors, (400), 137 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:39,476 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 143 transitions. [2023-12-20 08:06:39,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-20 08:06:39,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:06:39,477 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:06:39,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-20 08:06:39,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:06:39,678 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:06:39,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:06:39,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1398475348, now seen corresponding path program 38 times [2023-12-20 08:06:39,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:06:39,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540820236] [2023-12-20 08:06:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:06:39,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:06:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:06:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 673 proven. 779 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:06:40,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:06:40,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540820236] [2023-12-20 08:06:40,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540820236] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:06:40,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896808446] [2023-12-20 08:06:40,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 08:06:40,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:06:40,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:06:40,424 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) [2023-12-20 08:06:40,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-20 08:06:40,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 08:06:40,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:06:40,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-20 08:06:40,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:06:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 737 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:06:41,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:06:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 780 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:06:41,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896808446] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:06:41,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:06:41,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 48, 48] total 72 [2023-12-20 08:06:41,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193223379] [2023-12-20 08:06:41,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:06:41,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-20 08:06:41,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:06:41,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-20 08:06:41,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2005, Invalid=3107, Unknown=0, NotChecked=0, Total=5112 [2023-12-20 08:06:41,968 INFO L87 Difference]: Start difference. First operand 140 states and 143 transitions. Second operand has 72 states, 72 states have (on average 3.8472222222222223) internal successors, (277), 72 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:42,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:06:42,328 INFO L93 Difference]: Finished difference Result 228 states and 235 transitions. [2023-12-20 08:06:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-20 08:06:42,329 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 3.8472222222222223) internal successors, (277), 72 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2023-12-20 08:06:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:06:42,329 INFO L225 Difference]: With dead ends: 228 [2023-12-20 08:06:42,329 INFO L226 Difference]: Without dead ends: 144 [2023-12-20 08:06:42,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 231 SyntacticMatches, 23 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3366 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2105, Invalid=3297, Unknown=0, NotChecked=0, Total=5402 [2023-12-20 08:06:42,330 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 08:06:42,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 149 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 08:06:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-20 08:06:42,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2023-12-20 08:06:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0211267605633803) internal successors, (145), 142 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2023-12-20 08:06:42,439 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 139 [2023-12-20 08:06:42,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:06:42,439 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2023-12-20 08:06:42,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 3.8472222222222223) internal successors, (277), 72 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:42,439 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2023-12-20 08:06:42,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 08:06:42,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:06:42,440 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:06:42,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-20 08:06:42,645 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,SelfDestructingSolverStorable41 [2023-12-20 08:06:42,646 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:06:42,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:06:42,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2059947800, now seen corresponding path program 39 times [2023-12-20 08:06:42,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:06:42,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099544078] [2023-12-20 08:06:42,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:06:42,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:06:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:06:48,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1519 backedges. 78 proven. 1441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:06:48,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:06:48,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099544078] [2023-12-20 08:06:48,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099544078] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:06:48,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546513687] [2023-12-20 08:06:48,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 08:06:48,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:06:48,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:06:48,453 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) [2023-12-20 08:06:48,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-20 08:06:58,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2023-12-20 08:06:58,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:06:58,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 195 conjunts are in the unsatisfiable core [2023-12-20 08:06:58,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:06:58,709 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 17 treesize of output 13 [2023-12-20 08:06:58,753 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 37 treesize of output 17 [2023-12-20 08:06:58,760 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 31 treesize of output 30 [2023-12-20 08:06:58,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:58,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 33 [2023-12-20 08:06:58,835 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:58,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2023-12-20 08:06:58,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:58,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-12-20 08:06:58,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:58,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2023-12-20 08:06:58,969 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:58,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2023-12-20 08:06:58,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:58,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 78 [2023-12-20 08:06:59,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:59,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 81 [2023-12-20 08:06:59,079 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:59,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 94 [2023-12-20 08:06:59,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:59,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 97 [2023-12-20 08:06:59,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:59,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 110 [2023-12-20 08:06:59,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:59,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 113 [2023-12-20 08:06:59,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:06:59,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 105 treesize of output 122 [2023-12-20 08:06:59,533 INFO L349 Elim1Store]: treesize reduction 204, result has 39.5 percent of original size [2023-12-20 08:06:59,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 124 treesize of output 171 [2023-12-20 08:07:01,342 INFO L349 Elim1Store]: treesize reduction 1184, result has 15.1 percent of original size [2023-12-20 08:07:01,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 22 select indices, 22 select index equivalence classes, 0 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 239 case distinctions, treesize of input 906 treesize of output 745 [2023-12-20 08:07:10,106 INFO L349 Elim1Store]: treesize reduction 1152, result has 15.5 percent of original size [2023-12-20 08:07:10,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 218 case distinctions, treesize of input 737 treesize of output 650 [2023-12-20 08:07:19,227 INFO L349 Elim1Store]: treesize reduction 1104, result has 10.8 percent of original size [2023-12-20 08:07:19,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 198 case distinctions, treesize of input 653 treesize of output 555 [2023-12-20 08:07:23,561 INFO L349 Elim1Store]: treesize reduction 1152, result has 15.5 percent of original size [2023-12-20 08:07:23,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 218 case distinctions, treesize of input 672 treesize of output 625 [2023-12-20 08:07:29,430 INFO L349 Elim1Store]: treesize reduction 1106, result has 10.7 percent of original size [2023-12-20 08:07:29,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 198 case distinctions, treesize of input 601 treesize of output 535 [2023-12-20 08:07:33,850 INFO L349 Elim1Store]: treesize reduction 1152, result has 15.5 percent of original size [2023-12-20 08:07:33,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 218 case distinctions, treesize of input 620 treesize of output 605 [2023-12-20 08:07:39,680 INFO L349 Elim1Store]: treesize reduction 1104, result has 10.8 percent of original size [2023-12-20 08:07:39,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 198 case distinctions, treesize of input 562 treesize of output 520 [2023-12-20 08:07:43,858 INFO L349 Elim1Store]: treesize reduction 1152, result has 15.5 percent of original size [2023-12-20 08:07:43,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 218 case distinctions, treesize of input 581 treesize of output 590 [2023-12-20 08:07:49,962 INFO L349 Elim1Store]: treesize reduction 1106, result has 10.7 percent of original size [2023-12-20 08:07:49,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 198 case distinctions, treesize of input 536 treesize of output 510 [2023-12-20 08:07:54,691 INFO L349 Elim1Store]: treesize reduction 1152, result has 15.5 percent of original size [2023-12-20 08:07:54,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 218 case distinctions, treesize of input 555 treesize of output 580 [2023-12-20 08:08:00,155 INFO L349 Elim1Store]: treesize reduction 1104, result has 10.8 percent of original size [2023-12-20 08:08:00,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 198 case distinctions, treesize of input 523 treesize of output 505 [2023-12-20 08:08:04,539 INFO L349 Elim1Store]: treesize reduction 1152, result has 15.5 percent of original size [2023-12-20 08:08:04,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 218 case distinctions, treesize of input 542 treesize of output 575 [2023-12-20 08:08:11,882 INFO L349 Elim1Store]: treesize reduction 1106, result has 10.7 percent of original size [2023-12-20 08:08:11,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 198 case distinctions, treesize of input 522 treesize of output 504 [2023-12-20 08:08:15,924 INFO L349 Elim1Store]: treesize reduction 1232, result has 9.7 percent of original size [2023-12-20 08:08:15,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 218 case distinctions, treesize of input 541 treesize of output 507 [2023-12-20 08:08:19,966 INFO L349 Elim1Store]: treesize reduction 1186, result has 10.1 percent of original size [2023-12-20 08:08:19,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 218 case distinctions, treesize of input 535 treesize of output 520 [2023-12-20 08:08:24,839 INFO L349 Elim1Store]: treesize reduction 1312, result has 9.2 percent of original size [2023-12-20 08:08:24,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 22 select indices, 22 select index equivalence classes, 0 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 239 case distinctions, treesize of input 554 treesize of output 523 [2023-12-20 08:08:28,662 INFO L349 Elim1Store]: treesize reduction 1266, result has 9.5 percent of original size [2023-12-20 08:08:28,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 22 select indices, 22 select index equivalence classes, 0 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 239 case distinctions, treesize of input 548 treesize of output 536 [2023-12-20 08:08:32,609 INFO L349 Elim1Store]: treesize reduction 1400, result has 8.7 percent of original size [2023-12-20 08:08:32,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 0 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 261 case distinctions, treesize of input 567 treesize of output 539 [2023-12-20 08:08:36,186 INFO L349 Elim1Store]: treesize reduction 1354, result has 8.9 percent of original size [2023-12-20 08:08:36,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 0 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 261 case distinctions, treesize of input 561 treesize of output 552 [2023-12-20 08:08:39,967 INFO L349 Elim1Store]: treesize reduction 1480, result has 8.2 percent of original size [2023-12-20 08:08:39,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 24 select indices, 24 select index equivalence classes, 0 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 284 case distinctions, treesize of input 580 treesize of output 555 [2023-12-20 08:08:44,583 INFO L349 Elim1Store]: treesize reduction 1434, result has 8.5 percent of original size [2023-12-20 08:08:44,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 24 select indices, 24 select index equivalence classes, 0 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 284 case distinctions, treesize of input 574 treesize of output 568 [2023-12-20 08:08:49,385 INFO L349 Elim1Store]: treesize reduction 1560, result has 7.9 percent of original size [2023-12-20 08:08:49,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 25 select indices, 25 select index equivalence classes, 0 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 308 case distinctions, treesize of input 593 treesize of output 571 [2023-12-20 08:08:53,695 INFO L349 Elim1Store]: treesize reduction 1514, result has 8.1 percent of original size [2023-12-20 08:08:53,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 25 select indices, 25 select index equivalence classes, 0 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 308 case distinctions, treesize of input 587 treesize of output 584 [2023-12-20 08:08:58,313 INFO L349 Elim1Store]: treesize reduction 1640, result has 7.5 percent of original size [2023-12-20 08:08:58,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 26 select indices, 26 select index equivalence classes, 0 disjoint index pairs (out of 325 index pairs), introduced 26 new quantified variables, introduced 333 case distinctions, treesize of input 606 treesize of output 587 [2023-12-20 08:09:03,242 INFO L349 Elim1Store]: treesize reduction 1594, result has 7.7 percent of original size [2023-12-20 08:09:03,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 26 select indices, 26 select index equivalence classes, 0 disjoint index pairs (out of 325 index pairs), introduced 26 new quantified variables, introduced 333 case distinctions, treesize of input 600 treesize of output 600 [2023-12-20 08:09:09,396 INFO L349 Elim1Store]: treesize reduction 1720, result has 7.2 percent of original size [2023-12-20 08:09:09,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 27 select indices, 27 select index equivalence classes, 0 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 359 case distinctions, treesize of input 619 treesize of output 603 [2023-12-20 08:09:13,782 INFO L349 Elim1Store]: treesize reduction 1674, result has 7.4 percent of original size [2023-12-20 08:09:13,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 27 select indices, 27 select index equivalence classes, 0 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 359 case distinctions, treesize of input 613 treesize of output 616 [2023-12-20 08:09:20,361 INFO L349 Elim1Store]: treesize reduction 1412, result has 8.0 percent of original size [2023-12-20 08:09:20,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 210 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 386 case distinctions, treesize of input 394 treesize of output 450 [2023-12-20 08:09:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1519 backedges. 0 proven. 1519 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:09:48,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:09:56,742 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 86 treesize of output 84 [2023-12-20 08:09:56,757 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 426486 treesize of output 425974 [2023-12-20 08:09:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1519 backedges. 43 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:09:56,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546513687] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:09:56,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:09:56,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 60, 53] total 144 [2023-12-20 08:09:56,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886045487] [2023-12-20 08:09:56,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:09:56,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2023-12-20 08:09:56,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:09:56,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2023-12-20 08:09:56,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3988, Invalid=16604, Unknown=0, NotChecked=0, Total=20592 [2023-12-20 08:09:56,904 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand has 144 states, 144 states have (on average 2.923611111111111) internal successors, (421), 144 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:10:19,329 WARN L293 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 343 DAG size of output: 116 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 08:10:27,265 WARN L293 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 344 DAG size of output: 117 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 08:10:34,237 WARN L293 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 352 DAG size of output: 124 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 08:10:43,772 WARN L293 SmtUtils]: Spent 8.65s on a formula simplification. DAG size of input: 331 DAG size of output: 134 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 08:10:53,926 WARN L293 SmtUtils]: Spent 9.40s on a formula simplification. DAG size of input: 332 DAG size of output: 135 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 08:11:04,267 WARN L293 SmtUtils]: Spent 9.33s on a formula simplification. DAG size of input: 340 DAG size of output: 141 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 08:11:14,918 WARN L293 SmtUtils]: Spent 8.70s on a formula simplification. DAG size of input: 285 DAG size of output: 137 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 08:11:25,350 WARN L293 SmtUtils]: Spent 8.36s on a formula simplification. DAG size of input: 286 DAG size of output: 139 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 08:11:35,017 WARN L293 SmtUtils]: Spent 7.94s on a formula simplification. DAG size of input: 294 DAG size of output: 144 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 08:11:44,258 WARN L293 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 273 DAG size of output: 151 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 08:11:51,853 WARN L293 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 274 DAG size of output: 152 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 08:11:59,899 WARN L293 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 282 DAG size of output: 158 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 08:13:20,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:13:20,095 INFO L93 Difference]: Finished difference Result 232 states and 240 transitions. [2023-12-20 08:13:20,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2023-12-20 08:13:20,096 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 144 states have (on average 2.923611111111111) internal successors, (421), 144 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2023-12-20 08:13:20,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:13:20,096 INFO L225 Difference]: With dead ends: 232 [2023-12-20 08:13:20,096 INFO L226 Difference]: Without dead ends: 157 [2023-12-20 08:13:20,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 206 SyntacticMatches, 8 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27385 ImplicationChecksByTransitivity, 213.8s TimeCoverageRelationStatistics Valid=14349, Invalid=72971, Unknown=0, NotChecked=0, Total=87320 [2023-12-20 08:13:20,101 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 795 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 6759 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 7167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 6759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:13:20,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 609 Invalid, 7167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 6759 Invalid, 0 Unknown, 0 Unchecked, 28.0s Time] [2023-12-20 08:13:20,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-20 08:13:20,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2023-12-20 08:13:20,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.027027027027027) internal successors, (152), 148 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:13:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 152 transitions. [2023-12-20 08:13:20,162 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 152 transitions. Word has length 142 [2023-12-20 08:13:20,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:13:20,163 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 152 transitions. [2023-12-20 08:13:20,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 144 states have (on average 2.923611111111111) internal successors, (421), 144 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:13:20,164 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 152 transitions. [2023-12-20 08:13:20,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-20 08:13:20,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:13:20,164 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:13:20,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-20 08:13:20,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-12-20 08:13:20,380 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:13:20,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:13:20,380 INFO L85 PathProgramCache]: Analyzing trace with hash -495611226, now seen corresponding path program 40 times [2023-12-20 08:13:20,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:13:20,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985322811] [2023-12-20 08:13:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:13:20,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:13:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:13:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 72 proven. 1585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:13:26,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:13:26,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985322811] [2023-12-20 08:13:26,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985322811] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:13:26,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404851009] [2023-12-20 08:13:26,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 08:13:26,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:13:26,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:13:26,037 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) [2023-12-20 08:13:26,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-20 08:13:26,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 08:13:26,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:13:26,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 201 conjunts are in the unsatisfiable core [2023-12-20 08:13:26,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:13:26,427 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 18 treesize of output 14 [2023-12-20 08:13:26,450 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 0 case distinctions, treesize of input 40 treesize of output 18 [2023-12-20 08:13:26,453 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 0 case distinctions, treesize of input 33 treesize of output 32 [2023-12-20 08:13:26,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:26,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 54 treesize of output 35 [2023-12-20 08:13:26,490 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:26,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 47 treesize of output 49 [2023-12-20 08:13:26,533 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:26,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 52 [2023-12-20 08:13:26,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:26,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 66 [2023-12-20 08:13:26,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:26,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 69 [2023-12-20 08:13:26,631 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:26,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 83 [2023-12-20 08:13:26,696 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:26,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 96 treesize of output 86 [2023-12-20 08:13:26,709 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:26,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 100 [2023-12-20 08:13:26,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:26,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 103 [2023-12-20 08:13:26,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:26,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 103 treesize of output 117 [2023-12-20 08:13:26,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:26,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 124 treesize of output 120 [2023-12-20 08:13:26,907 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:26,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 117 treesize of output 134 [2023-12-20 08:13:27,008 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:27,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 138 treesize of output 137 [2023-12-20 08:13:27,031 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:27,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 131 treesize of output 151 [2023-12-20 08:13:27,160 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:27,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 152 treesize of output 154 [2023-12-20 08:13:27,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:27,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 145 treesize of output 168 [2023-12-20 08:13:27,329 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:27,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 166 treesize of output 171 [2023-12-20 08:13:27,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:27,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 159 treesize of output 185 [2023-12-20 08:13:27,521 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:27,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 180 treesize of output 188 [2023-12-20 08:13:27,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:27,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 173 treesize of output 202 [2023-12-20 08:13:27,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:27,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 194 treesize of output 205 [2023-12-20 08:13:27,773 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:27,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 187 treesize of output 219 [2023-12-20 08:13:27,963 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:27,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 208 treesize of output 222 [2023-12-20 08:13:28,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:28,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 201 treesize of output 236 [2023-12-20 08:13:28,203 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:28,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 222 treesize of output 239 [2023-12-20 08:13:28,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:28,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 215 treesize of output 253 [2023-12-20 08:13:28,496 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:28,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 236 treesize of output 256 [2023-12-20 08:13:28,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:28,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 229 treesize of output 270 [2023-12-20 08:13:28,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:28,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 250 treesize of output 273 [2023-12-20 08:13:28,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:28,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 243 treesize of output 287 [2023-12-20 08:13:29,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:29,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 264 treesize of output 290 [2023-12-20 08:13:29,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:29,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 257 treesize of output 304 [2023-12-20 08:13:29,419 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:29,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 278 treesize of output 307 [2023-12-20 08:13:29,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:29,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 271 treesize of output 321 [2023-12-20 08:13:29,773 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:29,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 292 treesize of output 324 [2023-12-20 08:13:29,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:29,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 285 treesize of output 338 [2023-12-20 08:13:30,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:30,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 306 treesize of output 341 [2023-12-20 08:13:30,266 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:30,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 299 treesize of output 355 [2023-12-20 08:13:30,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:30,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 210 case distinctions, treesize of input 320 treesize of output 358 [2023-12-20 08:13:30,691 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:30,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 210 case distinctions, treesize of input 313 treesize of output 372 [2023-12-20 08:13:31,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:31,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 22 select indices, 22 select index equivalence classes, 0 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 231 case distinctions, treesize of input 334 treesize of output 375 [2023-12-20 08:13:31,186 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:31,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 22 select indices, 22 select index equivalence classes, 0 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 231 case distinctions, treesize of input 327 treesize of output 389 [2023-12-20 08:13:32,143 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:13:32,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 0 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 253 case distinctions, treesize of input 219 treesize of output 284 [2023-12-20 08:13:42,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 829 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:13:42,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:13:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 115 proven. 1542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:13:43,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404851009] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:13:43,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:13:43,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 54, 54] total 108 [2023-12-20 08:13:43,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557886046] [2023-12-20 08:13:43,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:13:43,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2023-12-20 08:13:43,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:13:43,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2023-12-20 08:13:43,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2629, Invalid=8927, Unknown=0, NotChecked=0, Total=11556 [2023-12-20 08:13:43,498 INFO L87 Difference]: Start difference. First operand 149 states and 152 transitions. Second operand has 108 states, 108 states have (on average 3.3518518518518516) internal successors, (362), 108 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:13:53,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:13:53,781 INFO L93 Difference]: Finished difference Result 165 states and 171 transitions. [2023-12-20 08:13:53,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-12-20 08:13:53,782 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 3.3518518518518516) internal successors, (362), 108 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2023-12-20 08:13:53,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:13:53,782 INFO L225 Difference]: With dead ends: 165 [2023-12-20 08:13:53,782 INFO L226 Difference]: Without dead ends: 163 [2023-12-20 08:13:53,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 237 SyntacticMatches, 25 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8051 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=6046, Invalid=19076, Unknown=0, NotChecked=0, Total=25122 [2023-12-20 08:13:53,784 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 92 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3751 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 3789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-20 08:13:53,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 66 Invalid, 3789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3751 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-20 08:13:53,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-20 08:13:53,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 152. [2023-12-20 08:13:53,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.0264900662251655) internal successors, (155), 151 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:13:53,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 155 transitions. [2023-12-20 08:13:53,851 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 155 transitions. Word has length 148 [2023-12-20 08:13:53,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:13:53,852 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 155 transitions. [2023-12-20 08:13:53,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 3.3518518518518516) internal successors, (362), 108 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:13:53,852 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 155 transitions. [2023-12-20 08:13:53,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 08:13:53,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:13:53,852 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:13:53,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-20 08:13:54,060 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,SelfDestructingSolverStorable43 [2023-12-20 08:13:54,060 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:13:54,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:13:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1348866540, now seen corresponding path program 41 times [2023-12-20 08:13:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:13:54,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98345316] [2023-12-20 08:13:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:13:54,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:13:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:13:54,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 806 proven. 922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:13:54,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:13:54,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98345316] [2023-12-20 08:13:54,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98345316] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:13:54,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404805149] [2023-12-20 08:13:54,681 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 08:13:54,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:13:54,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:13:54,683 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) [2023-12-20 08:13:54,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-20 08:14:03,098 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2023-12-20 08:14:03,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:14:03,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-20 08:14:03,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:14:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 876 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:14:03,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:14:04,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 923 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:14:04,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404805149] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:14:04,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:14:04,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 52, 52] total 78 [2023-12-20 08:14:04,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136605921] [2023-12-20 08:14:04,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:14:04,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2023-12-20 08:14:04,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:14:04,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2023-12-20 08:14:04,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2354, Invalid=3652, Unknown=0, NotChecked=0, Total=6006 [2023-12-20 08:14:04,634 INFO L87 Difference]: Start difference. First operand 152 states and 155 transitions. Second operand has 78 states, 78 states have (on average 3.858974358974359) internal successors, (301), 78 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:14:05,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:14:05,025 INFO L93 Difference]: Finished difference Result 246 states and 253 transitions. [2023-12-20 08:14:05,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-20 08:14:05,025 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 3.858974358974359) internal successors, (301), 78 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-20 08:14:05,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:14:05,026 INFO L225 Difference]: With dead ends: 246 [2023-12-20 08:14:05,026 INFO L226 Difference]: Without dead ends: 156 [2023-12-20 08:14:05,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 251 SyntacticMatches, 25 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3960 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2462, Invalid=3858, Unknown=0, NotChecked=0, Total=6320 [2023-12-20 08:14:05,026 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 8 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 08:14:05,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 170 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 08:14:05,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-20 08:14:05,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2023-12-20 08:14:05,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.0194805194805194) internal successors, (157), 154 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:14:05,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2023-12-20 08:14:05,090 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 151 [2023-12-20 08:14:05,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:14:05,090 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2023-12-20 08:14:05,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 3.858974358974359) internal successors, (301), 78 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:14:05,091 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2023-12-20 08:14:05,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 08:14:05,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:14:05,091 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:14:05,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-20 08:14:05,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:14:05,306 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:14:05,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:14:05,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2054017832, now seen corresponding path program 42 times [2023-12-20 08:14:05,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:14:05,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442966499] [2023-12-20 08:14:05,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:14:05,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:14:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:14:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1801 backedges. 73 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:14:11,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:14:11,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442966499] [2023-12-20 08:14:11,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442966499] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:14:11,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464240538] [2023-12-20 08:14:11,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 08:14:11,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:14:11,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:14:11,310 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) [2023-12-20 08:14:11,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-20 08:14:36,979 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2023-12-20 08:14:36,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:14:37,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 210 conjunts are in the unsatisfiable core [2023-12-20 08:14:37,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:14:37,048 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 17 treesize of output 13 [2023-12-20 08:14:37,086 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 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-20 08:14:37,091 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 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-20 08:14:37,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 33 [2023-12-20 08:14:37,149 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 46 [2023-12-20 08:14:37,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-12-20 08:14:37,216 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2023-12-20 08:14:37,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2023-12-20 08:14:37,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 78 [2023-12-20 08:14:37,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 81 [2023-12-20 08:14:37,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 94 [2023-12-20 08:14:37,441 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 97 [2023-12-20 08:14:37,458 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 110 [2023-12-20 08:14:37,548 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 113 [2023-12-20 08:14:37,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 126 [2023-12-20 08:14:37,665 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 129 [2023-12-20 08:14:37,688 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 142 [2023-12-20 08:14:37,801 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 141 treesize of output 145 [2023-12-20 08:14:37,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 135 treesize of output 158 [2023-12-20 08:14:37,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 154 treesize of output 161 [2023-12-20 08:14:37,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:37,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 148 treesize of output 174 [2023-12-20 08:14:38,157 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:38,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 167 treesize of output 177 [2023-12-20 08:14:38,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:38,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 161 treesize of output 190 [2023-12-20 08:14:38,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:38,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 180 treesize of output 193 [2023-12-20 08:14:38,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:38,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 174 treesize of output 206 [2023-12-20 08:14:38,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:38,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 193 treesize of output 209 [2023-12-20 08:14:38,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:38,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 187 treesize of output 222 [2023-12-20 08:14:38,860 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:38,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 206 treesize of output 225 [2023-12-20 08:14:38,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:38,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 200 treesize of output 238 [2023-12-20 08:14:39,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:39,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 219 treesize of output 241 [2023-12-20 08:14:39,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:39,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 213 treesize of output 254 [2023-12-20 08:14:39,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:39,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 232 treesize of output 257 [2023-12-20 08:14:39,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:39,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 226 treesize of output 270 [2023-12-20 08:14:39,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:39,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 245 treesize of output 273 [2023-12-20 08:14:39,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:39,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 239 treesize of output 286 [2023-12-20 08:14:40,185 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:40,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 258 treesize of output 289 [2023-12-20 08:14:40,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:40,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 252 treesize of output 302 [2023-12-20 08:14:40,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:40,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 271 treesize of output 305 [2023-12-20 08:14:40,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:40,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 265 treesize of output 318 [2023-12-20 08:14:41,021 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:41,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 284 treesize of output 321 [2023-12-20 08:14:41,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:41,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 278 treesize of output 334 [2023-12-20 08:14:41,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:41,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 210 case distinctions, treesize of input 297 treesize of output 337 [2023-12-20 08:14:41,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:41,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 210 case distinctions, treesize of input 291 treesize of output 350 [2023-12-20 08:14:41,960 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:41,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 22 select indices, 22 select index equivalence classes, 0 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 231 case distinctions, treesize of input 310 treesize of output 353 [2023-12-20 08:14:42,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:42,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 22 select indices, 22 select index equivalence classes, 0 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 231 case distinctions, treesize of input 304 treesize of output 366 [2023-12-20 08:14:42,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:42,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 0 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 253 case distinctions, treesize of input 323 treesize of output 369 [2023-12-20 08:14:42,603 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:42,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 0 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 253 case distinctions, treesize of input 317 treesize of output 382 [2023-12-20 08:14:43,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:14:43,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 24 select indices, 24 select index equivalence classes, 300 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 276 case distinctions, treesize of input 180 treesize of output 248 [2023-12-20 08:14:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1801 backedges. 901 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:14:52,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:14:54,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1801 backedges. 120 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:14:54,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464240538] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:14:54,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:14:54,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 57, 56] total 113 [2023-12-20 08:14:54,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624024745] [2023-12-20 08:14:54,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:14:54,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2023-12-20 08:14:54,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:14:54,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2023-12-20 08:14:54,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2877, Invalid=9779, Unknown=0, NotChecked=0, Total=12656 [2023-12-20 08:14:54,594 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand has 113 states, 113 states have (on average 3.398230088495575) internal successors, (384), 113 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:15:03,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:15:03,743 INFO L93 Difference]: Finished difference Result 164 states and 167 transitions. [2023-12-20 08:15:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2023-12-20 08:15:03,743 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 3.398230088495575) internal successors, (384), 113 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-20 08:15:03,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:15:03,744 INFO L225 Difference]: With dead ends: 164 [2023-12-20 08:15:03,744 INFO L226 Difference]: Without dead ends: 162 [2023-12-20 08:15:03,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 245 SyntacticMatches, 28 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8860 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=6836, Invalid=21220, Unknown=0, NotChecked=0, Total=28056 [2023-12-20 08:15:03,745 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 109 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4547 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 4598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 4547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 08:15:03,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 77 Invalid, 4598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 4547 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 08:15:03,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-20 08:15:03,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 158. [2023-12-20 08:15:03,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.019108280254777) internal successors, (160), 157 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:15:03,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 160 transitions. [2023-12-20 08:15:03,831 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 160 transitions. Word has length 154 [2023-12-20 08:15:03,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:15:03,832 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 160 transitions. [2023-12-20 08:15:03,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 3.398230088495575) internal successors, (384), 113 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:15:03,832 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 160 transitions. [2023-12-20 08:15:03,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-20 08:15:03,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:15:03,832 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:15:03,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-12-20 08:15:04,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:15:04,048 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:15:04,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:15:04,048 INFO L85 PathProgramCache]: Analyzing trace with hash 851503658, now seen corresponding path program 43 times [2023-12-20 08:15:04,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:15:04,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796437940] [2023-12-20 08:15:04,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:15:04,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:15:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:15:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 877 proven. 998 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:15:04,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:15:04,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796437940] [2023-12-20 08:15:04,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796437940] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:15:04,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395202688] [2023-12-20 08:15:04,818 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-20 08:15:04,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:15:04,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:15:04,819 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) [2023-12-20 08:15:04,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-20 08:15:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:15:05,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-20 08:15:05,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:15:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 950 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:15:05,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:15:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 999 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:15:06,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395202688] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:15:06,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:15:06,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 54, 54] total 81 [2023-12-20 08:15:06,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727265203] [2023-12-20 08:15:06,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:15:06,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-12-20 08:15:06,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:15:06,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-12-20 08:15:06,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2539, Invalid=3941, Unknown=0, NotChecked=0, Total=6480 [2023-12-20 08:15:06,779 INFO L87 Difference]: Start difference. First operand 158 states and 160 transitions. Second operand has 81 states, 81 states have (on average 3.8641975308641974) internal successors, (313), 81 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:15:07,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:15:07,146 INFO L93 Difference]: Finished difference Result 250 states and 255 transitions. [2023-12-20 08:15:07,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-20 08:15:07,146 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 3.8641975308641974) internal successors, (313), 81 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2023-12-20 08:15:07,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:15:07,147 INFO L225 Difference]: With dead ends: 250 [2023-12-20 08:15:07,147 INFO L226 Difference]: Without dead ends: 162 [2023-12-20 08:15:07,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 261 SyntacticMatches, 26 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4224 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2595, Invalid=4047, Unknown=0, NotChecked=0, Total=6642 [2023-12-20 08:15:07,148 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 08:15:07,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 158 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 08:15:07,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-20 08:15:07,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2023-12-20 08:15:07,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.01875) internal successors, (163), 160 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:15:07,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2023-12-20 08:15:07,215 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 157 [2023-12-20 08:15:07,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:15:07,215 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2023-12-20 08:15:07,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 3.8641975308641974) internal successors, (313), 81 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:15:07,215 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2023-12-20 08:15:07,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-20 08:15:07,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:15:07,216 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:15:07,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-12-20 08:15:07,422 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,SelfDestructingSolverStorable46 [2023-12-20 08:15:07,423 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:15:07,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:15:07,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1948896870, now seen corresponding path program 44 times [2023-12-20 08:15:07,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:15:07,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502316884] [2023-12-20 08:15:07,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:15:07,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:15:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:15:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1951 backedges. 78 proven. 1873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:15:14,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:15:14,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502316884] [2023-12-20 08:15:14,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502316884] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:15:14,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842008613] [2023-12-20 08:15:14,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 08:15:14,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:15:14,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:15:14,031 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) [2023-12-20 08:15:14,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-20 08:15:14,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 08:15:14,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:15:14,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 220 conjunts are in the unsatisfiable core [2023-12-20 08:15:14,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:15:14,446 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 17 treesize of output 13 [2023-12-20 08:15:14,475 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 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-20 08:15:14,479 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 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-20 08:15:14,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:14,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 33 [2023-12-20 08:15:14,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:14,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 46 [2023-12-20 08:15:14,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:14,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-12-20 08:15:14,576 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:14,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2023-12-20 08:15:14,641 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:14,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 65 [2023-12-20 08:15:14,654 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:14,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 78 [2023-12-20 08:15:14,736 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:14,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 81 [2023-12-20 08:15:14,752 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:14,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 94 [2023-12-20 08:15:14,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:14,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 97 [2023-12-20 08:15:14,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:14,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 110 [2023-12-20 08:15:14,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:14,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 115 treesize of output 113 [2023-12-20 08:15:14,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:14,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 126 [2023-12-20 08:15:15,111 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:15,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 129 [2023-12-20 08:15:15,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:15,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 142 [2023-12-20 08:15:15,295 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:15,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 141 treesize of output 145 [2023-12-20 08:15:15,323 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:15,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 135 treesize of output 158 [2023-12-20 08:15:15,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:15,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 154 treesize of output 161 [2023-12-20 08:15:15,496 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:15,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 148 treesize of output 174 [2023-12-20 08:15:15,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:15,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 167 treesize of output 177 [2023-12-20 08:15:15,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:15,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 161 treesize of output 190 [2023-12-20 08:15:15,861 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:15,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 180 treesize of output 193 [2023-12-20 08:15:15,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:15,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 174 treesize of output 206 [2023-12-20 08:15:16,092 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:16,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 193 treesize of output 209 [2023-12-20 08:15:16,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:16,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 187 treesize of output 222 [2023-12-20 08:15:16,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:16,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 206 treesize of output 225 [2023-12-20 08:15:16,422 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:16,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 200 treesize of output 238 [2023-12-20 08:15:16,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:16,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 219 treesize of output 241 [2023-12-20 08:15:16,769 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:16,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 213 treesize of output 254 [2023-12-20 08:15:17,069 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:17,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 232 treesize of output 257 [2023-12-20 08:15:17,148 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:17,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 226 treesize of output 270 [2023-12-20 08:15:17,439 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:17,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 245 treesize of output 273 [2023-12-20 08:15:17,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:17,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 239 treesize of output 286 [2023-12-20 08:15:17,812 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:17,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 258 treesize of output 289 [2023-12-20 08:15:17,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:17,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 252 treesize of output 302 [2023-12-20 08:15:18,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:18,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 271 treesize of output 305 [2023-12-20 08:15:18,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:18,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 265 treesize of output 318 [2023-12-20 08:15:18,603 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:18,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 284 treesize of output 321 [2023-12-20 08:15:18,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:18,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 278 treesize of output 334 [2023-12-20 08:15:19,032 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:19,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 210 case distinctions, treesize of input 297 treesize of output 337 [2023-12-20 08:15:19,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:19,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 210 case distinctions, treesize of input 291 treesize of output 350 [2023-12-20 08:15:19,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:19,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 22 select indices, 22 select index equivalence classes, 0 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 231 case distinctions, treesize of input 310 treesize of output 353 [2023-12-20 08:15:19,646 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:19,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 22 select indices, 22 select index equivalence classes, 0 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 231 case distinctions, treesize of input 304 treesize of output 366 [2023-12-20 08:15:20,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:20,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 0 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 253 case distinctions, treesize of input 323 treesize of output 369 [2023-12-20 08:15:20,190 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:20,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 0 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 253 case distinctions, treesize of input 317 treesize of output 382 [2023-12-20 08:15:20,638 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:20,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 24 select indices, 24 select index equivalence classes, 300 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 276 case distinctions, treesize of input 336 treesize of output 385 [2023-12-20 08:15:21,024 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:21,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 24 select indices, 24 select index equivalence classes, 300 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 276 case distinctions, treesize of input 330 treesize of output 398 [2023-12-20 08:15:21,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 08:15:21,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 25 select indices, 25 select index equivalence classes, 325 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 300 case distinctions, treesize of input 187 treesize of output 258 [2023-12-20 08:15:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1951 backedges. 975 proven. 976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:15:32,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:15:34,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1951 backedges. 125 proven. 1826 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:15:34,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842008613] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:15:34,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:15:34,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 59, 58] total 117 [2023-12-20 08:15:34,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468091076] [2023-12-20 08:15:34,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:15:34,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2023-12-20 08:15:34,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:15:34,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2023-12-20 08:15:34,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3080, Invalid=10492, Unknown=0, NotChecked=0, Total=13572 [2023-12-20 08:15:34,554 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand has 117 states, 117 states have (on average 3.376068376068376) internal successors, (395), 117 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:15:43,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:15:43,620 INFO L93 Difference]: Finished difference Result 171 states and 174 transitions. [2023-12-20 08:15:43,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-12-20 08:15:43,620 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 3.376068376068376) internal successors, (395), 117 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2023-12-20 08:15:43,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:15:43,621 INFO L225 Difference]: With dead ends: 171 [2023-12-20 08:15:43,621 INFO L226 Difference]: Without dead ends: 169 [2023-12-20 08:15:43,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 257 SyntacticMatches, 27 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9379 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=7100, Invalid=22312, Unknown=0, NotChecked=0, Total=29412 [2023-12-20 08:15:43,622 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 54 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 4576 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 4613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 08:15:43,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 67 Invalid, 4613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4576 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 08:15:43,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-20 08:15:43,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 164. [2023-12-20 08:15:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.01840490797546) internal successors, (166), 163 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:15:43,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 166 transitions. [2023-12-20 08:15:43,692 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 166 transitions. Word has length 160 [2023-12-20 08:15:43,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:15:43,693 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 166 transitions. [2023-12-20 08:15:43,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 3.376068376068376) internal successors, (395), 117 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:15:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 166 transitions. [2023-12-20 08:15:43,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-20 08:15:43,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:15:43,693 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 26, 25, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:15:43,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-12-20 08:15:43,894 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,SelfDestructingSolverStorable47 [2023-12-20 08:15:43,895 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:15:43,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:15:43,895 INFO L85 PathProgramCache]: Analyzing trace with hash 224083500, now seen corresponding path program 45 times [2023-12-20 08:15:43,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:15:43,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137273411] [2023-12-20 08:15:43,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:15:43,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:15:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:15:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 951 proven. 1077 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:15:44,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:15:44,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137273411] [2023-12-20 08:15:44,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137273411] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:15:44,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891094093] [2023-12-20 08:15:44,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 08:15:44,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:15:44,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:15:44,575 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) [2023-12-20 08:15:44,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process Received shutdown request... [2023-12-20 08:16:08,767 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 08:16:08,804 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 [2023-12-20 08:16:09,968 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forcibly destroying the process [2023-12-20 08:16:09,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 08:16:09,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 08:16:09,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2023-12-20 08:16:09,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935001189] [2023-12-20 08:16:09,978 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 08:16:09,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 08:16:09,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:16:09,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 08:16:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=518, Unknown=0, NotChecked=0, Total=930 [2023-12-20 08:16:09,979 INFO L87 Difference]: Start difference. First operand 164 states and 166 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:16:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 08:16:09,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=412, Invalid=518, Unknown=0, NotChecked=0, Total=930 [2023-12-20 08:16:09,981 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 [2023-12-20 08:16:09,981 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] [2023-12-20 08:16:09,985 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 08:16:09,985 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forcibly destroying the process [2023-12-20 08:16:09,985 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,SelfDestructingSolverStorable48 [2023-12-20 08:16:09,986 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (164states) and FLOYD_HOARE automaton (currently 2 states, 31 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-20 08:16:09,989 INFO L445 BasicCegarLoop]: Path program histogram: [45, 1, 1, 1, 1] [2023-12-20 08:16:09,991 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 08:16:09,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 08:16:09 BoogieIcfgContainer [2023-12-20 08:16:09,992 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 08:16:09,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 137 [2023-12-20 08:16:10,004 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 [2023-12-20 08:16:10,006 INFO L158 Benchmark]: Toolchain (without parser) took 852247.04ms. Allocated memory was 277.9MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 225.5MB in the beginning and 630.2MB in the end (delta: -404.7MB). Peak memory consumption was 759.7MB. Max. memory is 8.0GB. [2023-12-20 08:16:10,006 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 209.7MB. Free memory is still 157.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 08:16:10,006 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.82ms. Allocated memory is still 277.9MB. Free memory was 225.0MB in the beginning and 213.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-20 08:16:10,006 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.04ms. Allocated memory is still 277.9MB. Free memory was 213.9MB in the beginning and 212.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-20 08:16:10,006 INFO L158 Benchmark]: Boogie Preprocessor took 50.22ms. Allocated memory is still 277.9MB. Free memory was 212.4MB in the beginning and 210.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-20 08:16:10,006 INFO L158 Benchmark]: RCFGBuilder took 313.28ms. Allocated memory is still 277.9MB. Free memory was 210.8MB in the beginning and 199.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-20 08:16:10,006 INFO L158 Benchmark]: TraceAbstraction took 851665.33ms. Allocated memory was 277.9MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 198.2MB in the beginning and 630.2MB in the end (delta: -432.0MB). Peak memory consumption was 732.4MB. Max. memory is 8.0GB. [2023-12-20 08:16:10,007 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 209.7MB. Free memory is still 157.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 181.82ms. Allocated memory is still 277.9MB. Free memory was 225.0MB in the beginning and 213.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.04ms. Allocated memory is still 277.9MB. Free memory was 213.9MB in the beginning and 212.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.22ms. Allocated memory is still 277.9MB. Free memory was 212.4MB in the beginning and 210.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 313.28ms. Allocated memory is still 277.9MB. Free memory was 210.8MB in the beginning and 199.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 851665.33ms. Allocated memory was 277.9MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 198.2MB in the beginning and 630.2MB in the end (delta: -432.0MB). Peak memory consumption was 732.4MB. 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 (164states) and FLOYD_HOARE automaton (currently 2 states, 31 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 851.6s, OverallIterations: 49, TraceHistogramMax: 27, PathProgramHistogramMax: 45, EmptinessCheckTime: 0.0s, AutomataDifference: 307.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4171 SdHoareTripleChecker+Valid, 67.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4171 mSDsluCounter, 4790 SdHoareTripleChecker+Invalid, 62.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4304 mSDsCounter, 1943 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62650 IncrementalHoareTripleChecker+Invalid, 64593 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1943 mSolverCounterUnsat, 486 mSDtfsCounter, 62650 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10444 GetRequests, 6019 SyntacticMatches, 452 SemanticMatches, 3973 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176450 ImplicationChecksByTransitivity, 380.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=48, InterpolantAutomatonStates: 2442, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 48 MinimizatonAttempts, 188 StatesRemovedByMinimization, 47 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 82.8s SatisfiabilityAnalysisTime, 418.7s InterpolantComputationTime, 7758 NumberOfCodeBlocks, 7748 NumberOfCodeBlocksAsserted, 386 NumberOfCheckSat, 11400 ConstructedInterpolants, 153 QuantifiedInterpolants, 385436 SizeOfPredicates, 289 NumberOfNonLiveVariables, 14757 ConjunctsInSsa, 3604 ConjunctsInUnsatCore, 137 InterpolantComputations, 4 PerfectInterpolantSequences, 28110/90408 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