/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-tiling/pr2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 18:35:49,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 18:35:49,317 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 18:35:49,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 18:35:49,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 18:35:49,348 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 18:35:49,349 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 18:35:49,349 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 18:35:49,350 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 18:35:49,353 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 18:35:49,354 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 18:35:49,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 18:35:49,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 18:35:49,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 18:35:49,356 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 18:35:49,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 18:35:49,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 18:35:49,356 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 18:35:49,357 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 18:35:49,357 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 18:35:49,357 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 18:35:49,358 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 18:35:49,358 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 18:35:49,358 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 18:35:49,358 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 18:35:49,358 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 18:35:49,359 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 18:35:49,359 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 18:35:49,360 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 18:35:49,360 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 18:35:49,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 18:35:49,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 18:35:49,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 18:35:49,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 18:35:49,361 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 18:35:49,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 18:35:49,362 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 18:35:49,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 18:35:49,362 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 18:35:49,362 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 18:35:49,362 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 18:35:49,363 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 18:35:49,363 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 18:35:49,363 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 18:35:49,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 18:35:49,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 18:35:49,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 18:35:49,621 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 18:35:49,622 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 18:35:49,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pr2.c [2023-12-18 18:35:50,741 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 18:35:50,908 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 18:35:50,908 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/pr2.c [2023-12-18 18:35:50,913 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af807ca4d/eb6e18747b79417bade71e87b2e0d1c5/FLAG97c17e38a [2023-12-18 18:35:50,924 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af807ca4d/eb6e18747b79417bade71e87b2e0d1c5 [2023-12-18 18:35:50,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 18:35:50,927 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 18:35:50,928 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 18:35:50,928 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 18:35:50,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 18:35:50,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 06:35:50" (1/1) ... [2023-12-18 18:35:50,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c242d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:50, skipping insertion in model container [2023-12-18 18:35:50,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 06:35:50" (1/1) ... [2023-12-18 18:35:50,949 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 18:35:51,066 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/pr2.c[394,407] [2023-12-18 18:35:51,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 18:35:51,088 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 18:35:51,096 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/pr2.c[394,407] [2023-12-18 18:35:51,105 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 18:35:51,121 INFO L206 MainTranslator]: Completed translation [2023-12-18 18:35:51,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:51 WrapperNode [2023-12-18 18:35:51,121 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 18:35:51,122 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 18:35:51,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 18:35:51,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 18:35:51,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:51" (1/1) ... [2023-12-18 18:35:51,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:51" (1/1) ... [2023-12-18 18:35:51,148 INFO L138 Inliner]: procedures = 15, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2023-12-18 18:35:51,148 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 18:35:51,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 18:35:51,149 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 18:35:51,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 18:35:51,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:51" (1/1) ... [2023-12-18 18:35:51,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:51" (1/1) ... [2023-12-18 18:35:51,158 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:51" (1/1) ... [2023-12-18 18:35:51,167 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 6, 6]. 43 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 4 writes are split as follows [0, 0, 4]. [2023-12-18 18:35:51,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:51" (1/1) ... [2023-12-18 18:35:51,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:51" (1/1) ... [2023-12-18 18:35:51,172 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:51" (1/1) ... [2023-12-18 18:35:51,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:51" (1/1) ... [2023-12-18 18:35:51,175 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:51" (1/1) ... [2023-12-18 18:35:51,176 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:51" (1/1) ... [2023-12-18 18:35:51,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 18:35:51,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 18:35:51,179 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 18:35:51,179 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 18:35:51,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:51" (1/1) ... [2023-12-18 18:35:51,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 18:35:51,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:51,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-18 18:35:51,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-18 18:35:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 18:35:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 18:35:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-18 18:35:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-18 18:35:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-18 18:35:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-18 18:35:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-18 18:35:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-18 18:35:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 18:35:51,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 18:35:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-18 18:35:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-18 18:35:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-18 18:35:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-18 18:35:51,302 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 18:35:51,304 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 18:35:51,462 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 18:35:51,490 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 18:35:51,491 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-18 18:35:51,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 06:35:51 BoogieIcfgContainer [2023-12-18 18:35:51,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 18:35:51,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 18:35:51,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 18:35:51,496 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 18:35:51,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 06:35:50" (1/3) ... [2023-12-18 18:35:51,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a6d3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 06:35:51, skipping insertion in model container [2023-12-18 18:35:51,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:51" (2/3) ... [2023-12-18 18:35:51,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a6d3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 06:35:51, skipping insertion in model container [2023-12-18 18:35:51,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 06:35:51" (3/3) ... [2023-12-18 18:35:51,498 INFO L112 eAbstractionObserver]: Analyzing ICFG pr2.c [2023-12-18 18:35:51,509 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 18:35:51,509 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-18 18:35:51,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 18:35:51,547 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;@1c8645a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 18:35:51,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-18 18:35:51,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 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) [2023-12-18 18:35:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-18 18:35:51,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:51,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:51,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:51,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:51,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1365372683, now seen corresponding path program 1 times [2023-12-18 18:35:51,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:51,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269543973] [2023-12-18 18:35:51,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:51,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:51,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:51,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:51,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269543973] [2023-12-18 18:35:51,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269543973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 18:35:51,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 18:35:51,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 18:35:51,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726419447] [2023-12-18 18:35:51,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 18:35:51,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 18:35:51,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:51,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 18:35:51,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 18:35:51,789 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:51,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:51,807 INFO L93 Difference]: Finished difference Result 38 states and 55 transitions. [2023-12-18 18:35:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 18:35:51,813 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2023-12-18 18:35:51,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:51,818 INFO L225 Difference]: With dead ends: 38 [2023-12-18 18:35:51,818 INFO L226 Difference]: Without dead ends: 17 [2023-12-18 18:35:51,821 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 [2023-12-18 18:35:51,823 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:51,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 18:35:51,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-18 18:35:51,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-18 18:35:51,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:51,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2023-12-18 18:35:51,844 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 12 [2023-12-18 18:35:51,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:51,845 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2023-12-18 18:35:51,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:51,845 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2023-12-18 18:35:51,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-18 18:35:51,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:51,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:51,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 18:35:51,846 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:51,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:51,847 INFO L85 PathProgramCache]: Analyzing trace with hash 2045431053, now seen corresponding path program 1 times [2023-12-18 18:35:51,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:51,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843328420] [2023-12-18 18:35:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:51,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:52,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:52,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843328420] [2023-12-18 18:35:52,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843328420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 18:35:52,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 18:35:52,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 18:35:52,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766935408] [2023-12-18 18:35:52,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 18:35:52,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 18:35:52,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:52,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 18:35:52,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 18:35:52,015 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:52,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:52,059 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2023-12-18 18:35:52,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 18:35:52,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2023-12-18 18:35:52,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:52,062 INFO L225 Difference]: With dead ends: 22 [2023-12-18 18:35:52,062 INFO L226 Difference]: Without dead ends: 20 [2023-12-18 18:35:52,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 18:35:52,064 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:52,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 48 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 18:35:52,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-18 18:35:52,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2023-12-18 18:35:52,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:52,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-12-18 18:35:52,068 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2023-12-18 18:35:52,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:52,068 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-12-18 18:35:52,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:52,069 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-12-18 18:35:52,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-18 18:35:52,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:52,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:52,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 18:35:52,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:52,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:52,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2045490635, now seen corresponding path program 1 times [2023-12-18 18:35:52,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:52,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208864682] [2023-12-18 18:35:52,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:52,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:52,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:52,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208864682] [2023-12-18 18:35:52,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208864682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 18:35:52,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 18:35:52,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 18:35:52,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367248019] [2023-12-18 18:35:52,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 18:35:52,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 18:35:52,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:52,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 18:35:52,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-18 18:35:52,321 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:52,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:52,354 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2023-12-18 18:35:52,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 18:35:52,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2023-12-18 18:35:52,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:52,355 INFO L225 Difference]: With dead ends: 33 [2023-12-18 18:35:52,356 INFO L226 Difference]: Without dead ends: 23 [2023-12-18 18:35:52,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-18 18:35:52,357 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 49 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:52,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 16 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 18:35:52,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-18 18:35:52,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2023-12-18 18:35:52,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:52,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-12-18 18:35:52,362 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 12 [2023-12-18 18:35:52,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:52,362 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-12-18 18:35:52,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:52,363 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-12-18 18:35:52,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-18 18:35:52,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:52,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:52,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 18:35:52,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:52,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:52,364 INFO L85 PathProgramCache]: Analyzing trace with hash 199609668, now seen corresponding path program 1 times [2023-12-18 18:35:52,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:52,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945893443] [2023-12-18 18:35:52,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:52,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:52,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:52,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945893443] [2023-12-18 18:35:52,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945893443] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:35:52,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330567931] [2023-12-18 18:35:52,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:52,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:52,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:52,830 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:52,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 18:35:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:52,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-18 18:35:52,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:52,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 18:35:53,026 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 11 [2023-12-18 18:35:53,087 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 15 treesize of output 7 [2023-12-18 18:35:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:53,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:35:53,179 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 17 treesize of output 15 [2023-12-18 18:35:53,183 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 16 treesize of output 14 [2023-12-18 18:35:53,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:53,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330567931] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:35:53,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:35:53,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 18 [2023-12-18 18:35:53,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118083709] [2023-12-18 18:35:53,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:35:53,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-18 18:35:53,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:53,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-18 18:35:53,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-12-18 18:35:53,207 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:53,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:53,674 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2023-12-18 18:35:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-18 18:35:53,674 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2023-12-18 18:35:53,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:53,676 INFO L225 Difference]: With dead ends: 102 [2023-12-18 18:35:53,676 INFO L226 Difference]: Without dead ends: 88 [2023-12-18 18:35:53,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=275, Invalid=847, Unknown=0, NotChecked=0, Total=1122 [2023-12-18 18:35:53,678 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 197 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:53,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 90 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 18:35:53,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-18 18:35:53,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 33. [2023-12-18 18:35:53,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 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) [2023-12-18 18:35:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2023-12-18 18:35:53,686 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 16 [2023-12-18 18:35:53,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:53,687 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2023-12-18 18:35:53,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:53,687 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2023-12-18 18:35:53,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-18 18:35:53,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:53,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:53,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-18 18:35:53,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:53,894 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:53,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:53,894 INFO L85 PathProgramCache]: Analyzing trace with hash -193417342, now seen corresponding path program 1 times [2023-12-18 18:35:53,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:53,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777590196] [2023-12-18 18:35:53,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:53,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:53,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:53,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777590196] [2023-12-18 18:35:53,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777590196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 18:35:53,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 18:35:53,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 18:35:53,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679901148] [2023-12-18 18:35:53,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 18:35:53,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 18:35:53,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:53,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 18:35:53,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 18:35:53,954 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:53,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:53,986 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2023-12-18 18:35:53,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 18:35:53,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 [2023-12-18 18:35:53,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:53,988 INFO L225 Difference]: With dead ends: 56 [2023-12-18 18:35:53,988 INFO L226 Difference]: Without dead ends: 42 [2023-12-18 18:35:53,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 18:35:53,990 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 31 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:53,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 35 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 18:35:53,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-18 18:35:53,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2023-12-18 18:35:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:53,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-12-18 18:35:53,996 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 16 [2023-12-18 18:35:53,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:53,996 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-12-18 18:35:53,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:53,996 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-12-18 18:35:53,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-18 18:35:53,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:53,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:53,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 18:35:53,997 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:53,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:53,998 INFO L85 PathProgramCache]: Analyzing trace with hash 486641028, now seen corresponding path program 1 times [2023-12-18 18:35:53,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:53,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990694279] [2023-12-18 18:35:53,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:53,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:54,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:54,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990694279] [2023-12-18 18:35:54,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990694279] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:35:54,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908823652] [2023-12-18 18:35:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:54,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:54,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:54,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:54,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 18:35:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:54,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-18 18:35:54,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:54,258 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 11 treesize of output 7 [2023-12-18 18:35:54,271 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 11 [2023-12-18 18:35:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:54,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:35:54,371 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 15 treesize of output 13 [2023-12-18 18:35:54,374 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 14 treesize of output 12 [2023-12-18 18:35:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:54,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908823652] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:35:54,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:35:54,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 14 [2023-12-18 18:35:54,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887962805] [2023-12-18 18:35:54,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:35:54,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-18 18:35:54,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:54,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-18 18:35:54,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-18 18:35:54,387 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:54,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:54,670 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2023-12-18 18:35:54,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-18 18:35:54,670 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 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 [2023-12-18 18:35:54,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:54,682 INFO L225 Difference]: With dead ends: 72 [2023-12-18 18:35:54,682 INFO L226 Difference]: Without dead ends: 70 [2023-12-18 18:35:54,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2023-12-18 18:35:54,684 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 97 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:54,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 93 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 18:35:54,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-18 18:35:54,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 40. [2023-12-18 18:35:54,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 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) [2023-12-18 18:35:54,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2023-12-18 18:35:54,692 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 16 [2023-12-18 18:35:54,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:54,692 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2023-12-18 18:35:54,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:54,692 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2023-12-18 18:35:54,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-18 18:35:54,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:54,693 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:54,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 18:35:54,899 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 [2023-12-18 18:35:54,899 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:54,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:54,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1237798271, now seen corresponding path program 1 times [2023-12-18 18:35:54,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:54,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517667926] [2023-12-18 18:35:54,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:54,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:54,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:54,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517667926] [2023-12-18 18:35:54,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517667926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 18:35:54,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 18:35:54,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 18:35:54,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175547274] [2023-12-18 18:35:54,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 18:35:54,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 18:35:54,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:54,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 18:35:54,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 18:35:54,930 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2023-12-18 18:35:54,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:54,952 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2023-12-18 18:35:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 18:35:54,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) Word has length 20 [2023-12-18 18:35:54,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:54,954 INFO L225 Difference]: With dead ends: 58 [2023-12-18 18:35:54,954 INFO L226 Difference]: Without dead ends: 44 [2023-12-18 18:35:54,954 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 [2023-12-18 18:35:54,955 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:54,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 31 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 18:35:54,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-18 18:35:54,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2023-12-18 18:35:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 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) [2023-12-18 18:35:54,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2023-12-18 18:35:54,965 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 20 [2023-12-18 18:35:54,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:54,965 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2023-12-18 18:35:54,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2023-12-18 18:35:54,966 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2023-12-18 18:35:54,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-18 18:35:54,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:54,966 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:54,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 18:35:54,967 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:54,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:54,967 INFO L85 PathProgramCache]: Analyzing trace with hash -470241182, now seen corresponding path program 1 times [2023-12-18 18:35:54,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:54,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948751192] [2023-12-18 18:35:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:54,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:55,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:55,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948751192] [2023-12-18 18:35:55,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948751192] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:35:55,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718643941] [2023-12-18 18:35:55,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:55,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:55,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:55,225 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:55,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 18:35:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:55,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-18 18:35:55,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:55,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 18:35:55,394 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 15 treesize of output 7 [2023-12-18 18:35:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:55,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:35:55,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 18:35:55,465 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 18 treesize of output 14 [2023-12-18 18:35:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:55,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718643941] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:35:55,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:35:55,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-12-18 18:35:55,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738267145] [2023-12-18 18:35:55,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:35:55,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-18 18:35:55,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:55,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-18 18:35:55,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-12-18 18:35:55,481 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:55,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:55,676 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2023-12-18 18:35:55,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-18 18:35:55,676 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 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 21 [2023-12-18 18:35:55,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:55,677 INFO L225 Difference]: With dead ends: 72 [2023-12-18 18:35:55,677 INFO L226 Difference]: Without dead ends: 63 [2023-12-18 18:35:55,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2023-12-18 18:35:55,678 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 83 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:55,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 79 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 18:35:55,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-18 18:35:55,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 41. [2023-12-18 18:35:55,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 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) [2023-12-18 18:35:55,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2023-12-18 18:35:55,684 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 21 [2023-12-18 18:35:55,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:55,684 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2023-12-18 18:35:55,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:55,685 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2023-12-18 18:35:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-18 18:35:55,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:55,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:55,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 18:35:55,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:55,891 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:55,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:55,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1481358432, now seen corresponding path program 1 times [2023-12-18 18:35:55,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:55,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030675389] [2023-12-18 18:35:55,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:55,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:56,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:56,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030675389] [2023-12-18 18:35:56,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030675389] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:35:56,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122867561] [2023-12-18 18:35:56,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:56,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:56,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:56,066 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:56,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 18:35:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:56,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-18 18:35:56,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:56,158 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 11 treesize of output 7 [2023-12-18 18:35:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:56,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:35:56,255 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 17 treesize of output 15 [2023-12-18 18:35:56,256 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 16 treesize of output 12 [2023-12-18 18:35:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:56,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122867561] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:35:56,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:35:56,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 14 [2023-12-18 18:35:56,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729864816] [2023-12-18 18:35:56,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:35:56,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-18 18:35:56,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:56,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-18 18:35:56,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-18 18:35:56,268 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:56,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:56,493 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2023-12-18 18:35:56,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-18 18:35:56,493 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-18 18:35:56,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:56,494 INFO L225 Difference]: With dead ends: 78 [2023-12-18 18:35:56,494 INFO L226 Difference]: Without dead ends: 76 [2023-12-18 18:35:56,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2023-12-18 18:35:56,497 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 49 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:56,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 104 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 18:35:56,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-18 18:35:56,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 53. [2023-12-18 18:35:56,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 52 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) [2023-12-18 18:35:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2023-12-18 18:35:56,514 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 21 [2023-12-18 18:35:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:56,515 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2023-12-18 18:35:56,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2023-12-18 18:35:56,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-18 18:35:56,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:56,518 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:56,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-18 18:35:56,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:56,724 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:56,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:56,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2076003001, now seen corresponding path program 1 times [2023-12-18 18:35:56,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:56,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588316124] [2023-12-18 18:35:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:56,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-18 18:35:56,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:56,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588316124] [2023-12-18 18:35:56,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588316124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 18:35:56,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 18:35:56,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 18:35:56,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928942485] [2023-12-18 18:35:56,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 18:35:56,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 18:35:56,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:56,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 18:35:56,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 18:35:56,749 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:56,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:56,766 INFO L93 Difference]: Finished difference Result 74 states and 87 transitions. [2023-12-18 18:35:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 18:35:56,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 [2023-12-18 18:35:56,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:56,767 INFO L225 Difference]: With dead ends: 74 [2023-12-18 18:35:56,767 INFO L226 Difference]: Without dead ends: 58 [2023-12-18 18:35:56,767 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 [2023-12-18 18:35:56,767 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:56,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 41 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 18:35:56,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-18 18:35:56,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 48. [2023-12-18 18:35:56,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2023-12-18 18:35:56,777 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 25 [2023-12-18 18:35:56,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:56,777 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2023-12-18 18:35:56,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:56,778 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2023-12-18 18:35:56,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-18 18:35:56,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:56,778 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:56,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 18:35:56,778 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:56,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:56,779 INFO L85 PathProgramCache]: Analyzing trace with hash -697495548, now seen corresponding path program 2 times [2023-12-18 18:35:56,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:56,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784815729] [2023-12-18 18:35:56,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:56,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:57,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:57,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784815729] [2023-12-18 18:35:57,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784815729] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:35:57,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769077357] [2023-12-18 18:35:57,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 18:35:57,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:57,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:57,027 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:57,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 18:35:57,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 18:35:57,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:35:57,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-18 18:35:57,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:57,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:35:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:57,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769077357] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:35:57,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:35:57,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2023-12-18 18:35:57,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205723553] [2023-12-18 18:35:57,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:35:57,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-18 18:35:57,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:57,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-18 18:35:57,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2023-12-18 18:35:57,440 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 24 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 24 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) [2023-12-18 18:35:57,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:57,618 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2023-12-18 18:35:57,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-18 18:35:57,618 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 24 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) Word has length 26 [2023-12-18 18:35:57,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:57,619 INFO L225 Difference]: With dead ends: 99 [2023-12-18 18:35:57,619 INFO L226 Difference]: Without dead ends: 67 [2023-12-18 18:35:57,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=236, Invalid=576, Unknown=0, NotChecked=0, Total=812 [2023-12-18 18:35:57,620 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 157 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:57,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 67 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 18:35:57,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-18 18:35:57,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2023-12-18 18:35:57,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:57,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2023-12-18 18:35:57,627 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 26 [2023-12-18 18:35:57,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:57,627 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2023-12-18 18:35:57,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 24 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) [2023-12-18 18:35:57,628 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2023-12-18 18:35:57,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-18 18:35:57,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:57,628 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:57,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 18:35:57,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-18 18:35:57,839 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:57,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:57,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1708646467, now seen corresponding path program 3 times [2023-12-18 18:35:57,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:57,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083399720] [2023-12-18 18:35:57,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:57,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:58,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:58,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083399720] [2023-12-18 18:35:58,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083399720] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:35:58,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025976569] [2023-12-18 18:35:58,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 18:35:58,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:58,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:58,188 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:58,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 18:35:58,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-18 18:35:58,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:35:58,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-18 18:35:58,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:58,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 18:35:58,406 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 11 [2023-12-18 18:35:58,632 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:35:58,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:35:58,654 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:58,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:35:58,789 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 27 treesize of output 25 [2023-12-18 18:35:58,791 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 24 treesize of output 20 [2023-12-18 18:35:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:58,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025976569] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:35:58,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:35:58,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 29 [2023-12-18 18:35:58,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656115610] [2023-12-18 18:35:58,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:35:58,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-18 18:35:58,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:58,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-18 18:35:58,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2023-12-18 18:35:58,870 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 29 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:59,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:59,804 INFO L93 Difference]: Finished difference Result 133 states and 149 transitions. [2023-12-18 18:35:59,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-18 18:35:59,804 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 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 30 [2023-12-18 18:35:59,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:59,805 INFO L225 Difference]: With dead ends: 133 [2023-12-18 18:35:59,805 INFO L226 Difference]: Without dead ends: 124 [2023-12-18 18:35:59,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=500, Invalid=2470, Unknown=0, NotChecked=0, Total=2970 [2023-12-18 18:35:59,807 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 290 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:59,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 165 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 18:35:59,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-18 18:35:59,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 70. [2023-12-18 18:35:59,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.144927536231884) internal successors, (79), 69 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) [2023-12-18 18:35:59,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2023-12-18 18:35:59,817 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 30 [2023-12-18 18:35:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:59,817 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2023-12-18 18:35:59,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:59,817 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2023-12-18 18:35:59,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-18 18:35:59,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:59,818 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:59,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-18 18:36:00,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:36:00,024 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:36:00,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:36:00,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1859723203, now seen corresponding path program 1 times [2023-12-18 18:36:00,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:36:00,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720340305] [2023-12-18 18:36:00,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:36:00,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:36:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:36:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:00,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:36:00,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720340305] [2023-12-18 18:36:00,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720340305] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:36:00,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478264301] [2023-12-18 18:36:00,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:36:00,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:36:00,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:36:00,292 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:36:00,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 18:36:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:36:00,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-18 18:36:00,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:36:00,398 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 11 treesize of output 7 [2023-12-18 18:36:00,422 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 11 [2023-12-18 18:36:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:00,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:36:00,673 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 17 treesize of output 15 [2023-12-18 18:36:00,675 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 16 treesize of output 12 [2023-12-18 18:36:00,683 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:00,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478264301] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:36:00,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:36:00,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12] total 24 [2023-12-18 18:36:00,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273110366] [2023-12-18 18:36:00,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:36:00,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-18 18:36:00,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:36:00,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-18 18:36:00,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-12-18 18:36:00,685 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 24 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 24 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) [2023-12-18 18:36:01,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:36:01,141 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2023-12-18 18:36:01,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-18 18:36:01,142 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 24 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) Word has length 30 [2023-12-18 18:36:01,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:36:01,142 INFO L225 Difference]: With dead ends: 119 [2023-12-18 18:36:01,142 INFO L226 Difference]: Without dead ends: 117 [2023-12-18 18:36:01,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=325, Invalid=1567, Unknown=0, NotChecked=0, Total=1892 [2023-12-18 18:36:01,144 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 78 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 18:36:01,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 141 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 18:36:01,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-18 18:36:01,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 75. [2023-12-18 18:36:01,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.1486486486486487) internal successors, (85), 74 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) [2023-12-18 18:36:01,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2023-12-18 18:36:01,153 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 30 [2023-12-18 18:36:01,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:36:01,154 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2023-12-18 18:36:01,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 24 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) [2023-12-18 18:36:01,154 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2023-12-18 18:36:01,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-18 18:36:01,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:36:01,155 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:36:01,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-18 18:36:01,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:36:01,363 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:36:01,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:36:01,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2072433147, now seen corresponding path program 2 times [2023-12-18 18:36:01,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:36:01,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689043189] [2023-12-18 18:36:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:36:01,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:36:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:36:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:01,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:36:01,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689043189] [2023-12-18 18:36:01,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689043189] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:36:01,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906904140] [2023-12-18 18:36:01,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 18:36:01,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:36:01,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:36:01,641 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:36:01,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 18:36:01,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 18:36:01,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:36:01,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-18 18:36:01,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:36:01,734 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 11 treesize of output 7 [2023-12-18 18:36:01,814 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:01,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:36:01,888 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 17 treesize of output 15 [2023-12-18 18:36:01,890 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 16 treesize of output 12 [2023-12-18 18:36:01,913 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:01,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906904140] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:36:01,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:36:01,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 20 [2023-12-18 18:36:01,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071154978] [2023-12-18 18:36:01,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:36:01,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-18 18:36:01,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:36:01,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-18 18:36:01,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-12-18 18:36:01,915 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 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) [2023-12-18 18:36:02,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:36:02,540 INFO L93 Difference]: Finished difference Result 147 states and 164 transitions. [2023-12-18 18:36:02,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-18 18:36:02,541 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 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) Word has length 35 [2023-12-18 18:36:02,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:36:02,542 INFO L225 Difference]: With dead ends: 147 [2023-12-18 18:36:02,542 INFO L226 Difference]: Without dead ends: 145 [2023-12-18 18:36:02,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=348, Invalid=1722, Unknown=0, NotChecked=0, Total=2070 [2023-12-18 18:36:02,543 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 94 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 18:36:02,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 154 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 18:36:02,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-18 18:36:02,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 85. [2023-12-18 18:36:02,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 84 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:36:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2023-12-18 18:36:02,555 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 35 [2023-12-18 18:36:02,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:36:02,555 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2023-12-18 18:36:02,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 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) [2023-12-18 18:36:02,555 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2023-12-18 18:36:02,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-18 18:36:02,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:36:02,556 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:36:02,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 18:36:02,762 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,SelfDestructingSolverStorable13 [2023-12-18 18:36:02,762 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:36:02,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:36:02,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1685496003, now seen corresponding path program 4 times [2023-12-18 18:36:02,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:36:02,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436363175] [2023-12-18 18:36:02,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:36:02,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:36:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:36:03,140 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 30 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:03,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:36:03,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436363175] [2023-12-18 18:36:03,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436363175] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:36:03,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369111770] [2023-12-18 18:36:03,141 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 18:36:03,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:36:03,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:36:03,143 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:36:03,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 18:36:03,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 18:36:03,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:36:03,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-18 18:36:03,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:36:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:03,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:36:03,783 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:03,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369111770] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:36:03,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:36:03,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 33 [2023-12-18 18:36:03,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903606831] [2023-12-18 18:36:03,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:36:03,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-18 18:36:03,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:36:03,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-18 18:36:03,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2023-12-18 18:36:03,786 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand has 33 states, 33 states have (on average 3.303030303030303) internal successors, (109), 33 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) [2023-12-18 18:36:04,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:36:04,098 INFO L93 Difference]: Finished difference Result 168 states and 188 transitions. [2023-12-18 18:36:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 18:36:04,100 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.303030303030303) internal successors, (109), 33 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 40 [2023-12-18 18:36:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:36:04,100 INFO L225 Difference]: With dead ends: 168 [2023-12-18 18:36:04,100 INFO L226 Difference]: Without dead ends: 106 [2023-12-18 18:36:04,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=488, Invalid=1492, Unknown=0, NotChecked=0, Total=1980 [2023-12-18 18:36:04,102 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 220 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 18:36:04,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 118 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 18:36:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-18 18:36:04,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 97. [2023-12-18 18:36:04,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.125) internal successors, (108), 96 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:36:04,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2023-12-18 18:36:04,114 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 40 [2023-12-18 18:36:04,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:36:04,114 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2023-12-18 18:36:04,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.303030303030303) internal successors, (109), 33 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) [2023-12-18 18:36:04,114 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2023-12-18 18:36:04,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-18 18:36:04,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:36:04,115 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:36:04,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-18 18:36:04,320 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,SelfDestructingSolverStorable14 [2023-12-18 18:36:04,321 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:36:04,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:36:04,321 INFO L85 PathProgramCache]: Analyzing trace with hash -2033322186, now seen corresponding path program 5 times [2023-12-18 18:36:04,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:36:04,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952051007] [2023-12-18 18:36:04,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:36:04,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:36:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:36:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:04,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:36:04,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952051007] [2023-12-18 18:36:04,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952051007] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:36:04,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392721890] [2023-12-18 18:36:04,762 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 18:36:04,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:36:04,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:36:04,764 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:36:04,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 18:36:04,851 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-18 18:36:04,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:36:04,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-18 18:36:04,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:36:04,917 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 11 treesize of output 7 [2023-12-18 18:36:04,978 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 19 treesize of output 18 [2023-12-18 18:36:05,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:36:05,014 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 [2023-12-18 18:36:05,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:36:05,108 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 37 treesize of output 38 [2023-12-18 18:36:05,154 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:36:05,154 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 52 treesize of output 48 [2023-12-18 18:36:05,739 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:36:05,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 22 [2023-12-18 18:36:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:05,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:36:06,240 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 95 treesize of output 91 [2023-12-18 18:36:06,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:36:06,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 582 treesize of output 534 [2023-12-18 18:36:06,332 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:06,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392721890] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:36:06,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:36:06,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 19] total 48 [2023-12-18 18:36:06,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188987054] [2023-12-18 18:36:06,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:36:06,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-18 18:36:06,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:36:06,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-18 18:36:06,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2042, Unknown=0, NotChecked=0, Total=2256 [2023-12-18 18:36:06,335 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand has 48 states, 48 states have (on average 2.5416666666666665) internal successors, (122), 48 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:36:11,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:36:11,422 INFO L93 Difference]: Finished difference Result 270 states and 298 transitions. [2023-12-18 18:36:11,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-18 18:36:11,423 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.5416666666666665) internal successors, (122), 48 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-18 18:36:11,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:36:11,424 INFO L225 Difference]: With dead ends: 270 [2023-12-18 18:36:11,424 INFO L226 Difference]: Without dead ends: 261 [2023-12-18 18:36:11,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3317 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1947, Invalid=11163, Unknown=0, NotChecked=0, Total=13110 [2023-12-18 18:36:11,427 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 761 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-18 18:36:11,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 413 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-18 18:36:11,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-18 18:36:11,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 142. [2023-12-18 18:36:11,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.127659574468085) internal successors, (159), 141 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:36:11,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 159 transitions. [2023-12-18 18:36:11,444 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 159 transitions. Word has length 44 [2023-12-18 18:36:11,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:36:11,444 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 159 transitions. [2023-12-18 18:36:11,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.5416666666666665) internal successors, (122), 48 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:36:11,445 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 159 transitions. [2023-12-18 18:36:11,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-18 18:36:11,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:36:11,445 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:36:11,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 18:36:11,651 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,SelfDestructingSolverStorable15 [2023-12-18 18:36:11,651 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:36:11,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:36:11,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1748917570, now seen corresponding path program 3 times [2023-12-18 18:36:11,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:36:11,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509429099] [2023-12-18 18:36:11,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:36:11,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:36:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:36:12,047 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:12,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:36:12,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509429099] [2023-12-18 18:36:12,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509429099] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:36:12,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242402801] [2023-12-18 18:36:12,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 18:36:12,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:36:12,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:36:12,049 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:36:12,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 18:36:12,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-18 18:36:12,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:36:12,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-18 18:36:12,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:36:12,235 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 11 treesize of output 7 [2023-12-18 18:36:12,266 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 11 [2023-12-18 18:36:12,316 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 19 treesize of output 18 [2023-12-18 18:36:12,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:36:12,357 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 30 treesize of output 21 [2023-12-18 18:36:12,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:36:12,414 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 27 treesize of output 25 [2023-12-18 18:36:12,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:36:12,449 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 38 treesize of output 28 [2023-12-18 18:36:12,906 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:36:12,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2023-12-18 18:36:12,909 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:12,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:36:13,705 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 61 treesize of output 57 [2023-12-18 18:36:13,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:36:13,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 488 treesize of output 440 [2023-12-18 18:36:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:13,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242402801] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:36:13,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:36:13,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 19] total 48 [2023-12-18 18:36:13,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174713756] [2023-12-18 18:36:13,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:36:13,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-18 18:36:13,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:36:13,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-18 18:36:13,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=2029, Unknown=0, NotChecked=0, Total=2256 [2023-12-18 18:36:13,839 INFO L87 Difference]: Start difference. First operand 142 states and 159 transitions. Second operand has 48 states, 48 states have (on average 2.5416666666666665) internal successors, (122), 48 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:36:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:36:16,616 INFO L93 Difference]: Finished difference Result 246 states and 269 transitions. [2023-12-18 18:36:16,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-18 18:36:16,617 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.5416666666666665) internal successors, (122), 48 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-18 18:36:16,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:36:16,618 INFO L225 Difference]: With dead ends: 246 [2023-12-18 18:36:16,618 INFO L226 Difference]: Without dead ends: 237 [2023-12-18 18:36:16,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2160 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1245, Invalid=7311, Unknown=0, NotChecked=0, Total=8556 [2023-12-18 18:36:16,620 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 494 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-18 18:36:16,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 305 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-18 18:36:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-18 18:36:16,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 121. [2023-12-18 18:36:16,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.125) internal successors, (135), 120 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:36:16,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 135 transitions. [2023-12-18 18:36:16,635 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 135 transitions. Word has length 44 [2023-12-18 18:36:16,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:36:16,635 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 135 transitions. [2023-12-18 18:36:16,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.5416666666666665) internal successors, (122), 48 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:36:16,635 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 135 transitions. [2023-12-18 18:36:16,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-18 18:36:16,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:36:16,636 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:36:16,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-18 18:36:16,836 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,SelfDestructingSolverStorable16 [2023-12-18 18:36:16,836 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:36:16,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:36:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash 984283126, now seen corresponding path program 2 times [2023-12-18 18:36:16,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:36:16,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306798346] [2023-12-18 18:36:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:36:16,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:36:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:36:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:17,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:36:17,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306798346] [2023-12-18 18:36:17,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306798346] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:36:17,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198568160] [2023-12-18 18:36:17,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 18:36:17,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:36:17,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:36:17,185 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:36:17,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-18 18:36:17,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 18:36:17,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:36:17,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-18 18:36:17,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:36:17,375 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 11 treesize of output 7 [2023-12-18 18:36:17,397 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 11 [2023-12-18 18:36:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:17,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:36:17,768 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 17 treesize of output 15 [2023-12-18 18:36:17,769 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 16 treesize of output 12 [2023-12-18 18:36:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:17,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198568160] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:36:17,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:36:17,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 30 [2023-12-18 18:36:17,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126026695] [2023-12-18 18:36:17,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:36:17,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-18 18:36:17,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:36:17,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-18 18:36:17,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2023-12-18 18:36:17,782 INFO L87 Difference]: Start difference. First operand 121 states and 135 transitions. Second operand has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:36:18,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:36:18,683 INFO L93 Difference]: Finished difference Result 191 states and 212 transitions. [2023-12-18 18:36:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-18 18:36:18,684 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-18 18:36:18,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:36:18,684 INFO L225 Difference]: With dead ends: 191 [2023-12-18 18:36:18,685 INFO L226 Difference]: Without dead ends: 189 [2023-12-18 18:36:18,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=545, Invalid=3745, Unknown=0, NotChecked=0, Total=4290 [2023-12-18 18:36:18,686 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 109 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 18:36:18,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 196 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 18:36:18,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-18 18:36:18,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 126. [2023-12-18 18:36:18,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.128) internal successors, (141), 125 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:36:18,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 141 transitions. [2023-12-18 18:36:18,709 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 141 transitions. Word has length 44 [2023-12-18 18:36:18,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:36:18,709 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 141 transitions. [2023-12-18 18:36:18,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:36:18,709 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 141 transitions. [2023-12-18 18:36:18,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-18 18:36:18,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:36:18,710 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:36:18,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-18 18:36:18,916 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,SelfDestructingSolverStorable17 [2023-12-18 18:36:18,916 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:36:18,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:36:18,916 INFO L85 PathProgramCache]: Analyzing trace with hash -647620246, now seen corresponding path program 4 times [2023-12-18 18:36:18,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:36:18,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787607988] [2023-12-18 18:36:18,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:36:18,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:36:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:36:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:19,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:36:19,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787607988] [2023-12-18 18:36:19,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787607988] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:36:19,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641602756] [2023-12-18 18:36:19,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 18:36:19,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:36:19,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:36:19,230 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:36:19,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-18 18:36:19,292 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 18:36:19,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:36:19,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-18 18:36:19,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:36:19,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-18 18:36:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:19,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:36:19,582 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 17 treesize of output 15 [2023-12-18 18:36:19,584 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 16 treesize of output 12 [2023-12-18 18:36:19,595 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:19,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641602756] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:36:19,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:36:19,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 25 [2023-12-18 18:36:19,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368561914] [2023-12-18 18:36:19,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:36:19,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-18 18:36:19,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:36:19,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-18 18:36:19,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2023-12-18 18:36:19,597 INFO L87 Difference]: Start difference. First operand 126 states and 141 transitions. Second operand has 25 states, 25 states have (on average 3.4) internal successors, (85), 25 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) [2023-12-18 18:36:20,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:36:20,872 INFO L93 Difference]: Finished difference Result 261 states and 292 transitions. [2023-12-18 18:36:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-18 18:36:20,872 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 25 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) Word has length 49 [2023-12-18 18:36:20,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:36:20,873 INFO L225 Difference]: With dead ends: 261 [2023-12-18 18:36:20,873 INFO L226 Difference]: Without dead ends: 259 [2023-12-18 18:36:20,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2327 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=710, Invalid=6600, Unknown=0, NotChecked=0, Total=7310 [2023-12-18 18:36:20,876 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 114 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 18:36:20,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 270 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 18:36:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-18 18:36:20,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 136. [2023-12-18 18:36:20,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.125925925925926) internal successors, (152), 135 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) [2023-12-18 18:36:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 152 transitions. [2023-12-18 18:36:20,892 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 152 transitions. Word has length 49 [2023-12-18 18:36:20,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:36:20,893 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 152 transitions. [2023-12-18 18:36:20,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 25 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) [2023-12-18 18:36:20,893 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 152 transitions. [2023-12-18 18:36:20,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-18 18:36:20,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:36:20,893 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:36:20,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-18 18:36:21,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:36:21,094 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:36:21,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:36:21,094 INFO L85 PathProgramCache]: Analyzing trace with hash 807859062, now seen corresponding path program 6 times [2023-12-18 18:36:21,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:36:21,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110134286] [2023-12-18 18:36:21,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:36:21,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:36:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:36:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 73 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:21,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:36:21,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110134286] [2023-12-18 18:36:21,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110134286] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:36:21,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514327949] [2023-12-18 18:36:21,492 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 18:36:21,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:36:21,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:36:21,493 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:36:21,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-18 18:36:21,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-18 18:36:21,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:36:21,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-18 18:36:21,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:36:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 99 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:22,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:36:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 99 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:22,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514327949] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:36:22,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:36:22,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15] total 42 [2023-12-18 18:36:22,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774606568] [2023-12-18 18:36:22,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:36:22,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-18 18:36:22,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:36:22,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-18 18:36:22,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=1310, Unknown=0, NotChecked=0, Total=1722 [2023-12-18 18:36:22,356 INFO L87 Difference]: Start difference. First operand 136 states and 152 transitions. Second operand has 42 states, 42 states have (on average 3.5952380952380953) internal successors, (151), 42 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:36:22,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:36:22,610 INFO L93 Difference]: Finished difference Result 262 states and 289 transitions. [2023-12-18 18:36:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-18 18:36:22,610 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.5952380952380953) internal successors, (151), 42 states have internal predecessors, (151), 0 states have call successors, (0), 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 54 [2023-12-18 18:36:22,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:36:22,611 INFO L225 Difference]: With dead ends: 262 [2023-12-18 18:36:22,611 INFO L226 Difference]: Without dead ends: 170 [2023-12-18 18:36:22,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=618, Invalid=1832, Unknown=0, NotChecked=0, Total=2450 [2023-12-18 18:36:22,612 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 222 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 18:36:22,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 175 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 18:36:22,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-18 18:36:22,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 144. [2023-12-18 18:36:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.1118881118881119) internal successors, (159), 143 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:36:22,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 159 transitions. [2023-12-18 18:36:22,632 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 159 transitions. Word has length 54 [2023-12-18 18:36:22,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:36:22,632 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 159 transitions. [2023-12-18 18:36:22,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.5952380952380953) internal successors, (151), 42 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:36:22,632 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 159 transitions. [2023-12-18 18:36:22,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-18 18:36:22,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:36:22,632 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:36:22,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-18 18:36:22,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:36:22,833 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:36:22,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:36:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash 33366654, now seen corresponding path program 7 times [2023-12-18 18:36:22,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:36:22,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16564093] [2023-12-18 18:36:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:36:22,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:36:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:36:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:23,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:36:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16564093] [2023-12-18 18:36:23,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16564093] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:36:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313150108] [2023-12-18 18:36:23,447 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 18:36:23,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:36:23,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:36:23,448 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:36:23,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-18 18:36:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:36:23,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-18 18:36:23,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:36:23,627 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 11 treesize of output 7 [2023-12-18 18:36:23,684 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 [2023-12-18 18:36:23,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:36:23,729 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:36:23,730 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 34 treesize of output 36 [2023-12-18 18:36:23,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:36:23,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:36:23,863 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:36:23,865 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 42 treesize of output 47 [2023-12-18 18:36:23,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:36:23,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:36:23,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:36:23,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:36:23,944 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:36:23,944 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 69 treesize of output 61 [2023-12-18 18:36:26,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:36:26,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:36:26,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:36:26,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:36:26,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:36:26,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 16 [2023-12-18 18:36:26,256 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 12 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:26,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:36:30,802 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 35 treesize of output 33 [2023-12-18 18:36:30,805 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 114 treesize of output 110 [2023-12-18 18:36:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 11 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:36:30,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313150108] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:36:30,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:36:30,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 18] total 52 [2023-12-18 18:36:30,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523357911] [2023-12-18 18:36:30,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:36:30,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-18 18:36:30,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:36:30,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-18 18:36:30,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=2389, Unknown=3, NotChecked=0, Total=2652 [2023-12-18 18:36:30,952 INFO L87 Difference]: Start difference. First operand 144 states and 159 transitions. Second operand has 52 states, 52 states have (on average 3.0961538461538463) internal successors, (161), 52 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:36:32,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:36:36,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:36:40,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:36:44,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:36:48,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:36:53,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:36:57,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:37:01,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:37:02,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:37:02,296 INFO L93 Difference]: Finished difference Result 233 states and 252 transitions. [2023-12-18 18:37:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-18 18:37:02,297 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.0961538461538463) internal successors, (161), 52 states have internal predecessors, (161), 0 states have call successors, (0), 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 57 [2023-12-18 18:37:02,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:37:02,298 INFO L225 Difference]: With dead ends: 233 [2023-12-18 18:37:02,298 INFO L226 Difference]: Without dead ends: 224 [2023-12-18 18:37:02,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 80 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2564 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1183, Invalid=8516, Unknown=3, NotChecked=0, Total=9702 [2023-12-18 18:37:02,300 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 297 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 83 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.5s IncrementalHoareTripleChecker+Time [2023-12-18 18:37:02,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 555 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1417 Invalid, 7 Unknown, 0 Unchecked, 29.5s Time] [2023-12-18 18:37:02,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-18 18:37:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 139. [2023-12-18 18:37:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.108695652173913) internal successors, (153), 138 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2023-12-18 18:37:02,324 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 57 [2023-12-18 18:37:02,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:37:02,324 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2023-12-18 18:37:02,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.0961538461538463) internal successors, (161), 52 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2023-12-18 18:37:02,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-18 18:37:02,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:37:02,325 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:37:02,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-18 18:37:02,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:37:02,530 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:37:02,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:37:02,531 INFO L85 PathProgramCache]: Analyzing trace with hash -427711569, now seen corresponding path program 8 times [2023-12-18 18:37:02,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:37:02,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302863151] [2023-12-18 18:37:02,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:37:02,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:37:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:37:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 12 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:37:03,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:37:03,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302863151] [2023-12-18 18:37:03,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302863151] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:37:03,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88290833] [2023-12-18 18:37:03,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 18:37:03,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:37:03,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:37:03,045 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:37:03,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-18 18:37:03,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 18:37:03,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:37:03,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-18 18:37:03,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:37:03,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 18:37:03,325 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 11 [2023-12-18 18:37:03,657 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 15 treesize of output 7 [2023-12-18 18:37:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 12 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:37:03,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:37:03,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 18:37:03,904 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 24 treesize of output 20 [2023-12-18 18:37:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 12 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:37:04,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88290833] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:37:04,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:37:04,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 16] total 46 [2023-12-18 18:37:04,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222501493] [2023-12-18 18:37:04,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:37:04,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-18 18:37:04,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:37:04,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-18 18:37:04,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1905, Unknown=0, NotChecked=0, Total=2070 [2023-12-18 18:37:04,041 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:07,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:37:07,197 INFO L93 Difference]: Finished difference Result 301 states and 331 transitions. [2023-12-18 18:37:07,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-18 18:37:07,199 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 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 [2023-12-18 18:37:07,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:37:07,200 INFO L225 Difference]: With dead ends: 301 [2023-12-18 18:37:07,200 INFO L226 Difference]: Without dead ends: 292 [2023-12-18 18:37:07,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3998 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1512, Invalid=14238, Unknown=0, NotChecked=0, Total=15750 [2023-12-18 18:37:07,202 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 381 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 2026 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 2026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 18:37:07,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 547 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 2026 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 18:37:07,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-18 18:37:07,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 149. [2023-12-18 18:37:07,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.1081081081081081) internal successors, (164), 148 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:07,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2023-12-18 18:37:07,227 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 58 [2023-12-18 18:37:07,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:37:07,228 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2023-12-18 18:37:07,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2023-12-18 18:37:07,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-18 18:37:07,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:37:07,229 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:37:07,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-18 18:37:07,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-18 18:37:07,429 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:37:07,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:37:07,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1200872273, now seen corresponding path program 3 times [2023-12-18 18:37:07,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:37:07,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583282549] [2023-12-18 18:37:07,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:37:07,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:37:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:37:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:37:07,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:37:07,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583282549] [2023-12-18 18:37:07,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583282549] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:37:07,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758046392] [2023-12-18 18:37:07,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 18:37:07,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:37:07,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:37:07,808 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:37:07,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-18 18:37:07,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-18 18:37:07,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:37:07,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-18 18:37:07,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:37:08,021 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 11 treesize of output 7 [2023-12-18 18:37:08,050 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 11 [2023-12-18 18:37:08,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,100 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 [2023-12-18 18:37:08,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,144 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:37:08,144 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 42 treesize of output 25 [2023-12-18 18:37:08,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,216 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:37:08,216 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 34 treesize of output 36 [2023-12-18 18:37:08,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:37:08,279 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 53 treesize of output 39 [2023-12-18 18:37:08,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:37:08,415 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 45 treesize of output 50 [2023-12-18 18:37:08,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:08,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:37:08,498 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 64 treesize of output 53 [2023-12-18 18:37:08,818 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-12-18 18:37:08,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:37:14,619 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (.cse1 (div c_~CELLCOUNT~0 2)) (.cse2 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_main_~CCCELVOL2~0#1| 1))) (let ((.cse0 (forall ((|v_ULTIMATE.start_main_~i~0#1_235| Int) (|v_ULTIMATE.start_main_~i~0#1_234| Int) (|v_ULTIMATE.start_main_~i~0#1_236| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_235| (+ |v_ULTIMATE.start_main_~i~0#1_236| 1)) (< |v_ULTIMATE.start_main_~i~0#1_236| .cse4) (< |v_ULTIMATE.start_main_~i~0#1_234| (+ |v_ULTIMATE.start_main_~i~0#1_235| 1)) (< |v_ULTIMATE.start_main_~i~0#1_234| .cse1) (< (select (store (store (store .cse2 (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_236|) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 8)) 0) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_235|) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_234|) (- 8)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) .cse3))))) (and (or .cse0 (not (= (mod c_~CELLCOUNT~0 2) 0))) (or .cse0 (< c_~CELLCOUNT~0 0)) (forall ((|v_ULTIMATE.start_main_~i~0#1_236| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_235| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_235| (+ |v_ULTIMATE.start_main_~i~0#1_236| 1)) (forall ((|v_ULTIMATE.start_main_~i~0#1_234| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_234| (+ .cse1 1)) (< |v_ULTIMATE.start_main_~i~0#1_234| (+ |v_ULTIMATE.start_main_~i~0#1_235| 1)) (< (select (store (store (store .cse2 (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_236|) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 8)) 0) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_235|) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_234|) (- 8)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) .cse3))))) (< |v_ULTIMATE.start_main_~i~0#1_236| .cse4)))))) is different from false [2023-12-18 18:37:18,683 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (.cse2 (div c_~CELLCOUNT~0 2)) (.cse3 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse4 (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|)) (.cse5 (+ |c_ULTIMATE.start_main_~CCCELVOL2~0#1| 1))) (let ((.cse0 (forall ((|v_ULTIMATE.start_main_~i~0#1_235| Int) (|v_ULTIMATE.start_main_~i~0#1_234| Int) (|v_ULTIMATE.start_main_~i~0#1_236| Int) (v_ArrVal_471 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_235| (+ |v_ULTIMATE.start_main_~i~0#1_236| 1)) (< |v_ULTIMATE.start_main_~i~0#1_236| .cse1) (< |v_ULTIMATE.start_main_~i~0#1_234| (+ |v_ULTIMATE.start_main_~i~0#1_235| 1)) (< |v_ULTIMATE.start_main_~i~0#1_234| .cse2) (< (select (store (store (store (store .cse3 .cse4 v_ArrVal_471) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_236|) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 8)) 0) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_235|) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_234|) (- 8)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) .cse5))))) (and (or .cse0 (< c_~CELLCOUNT~0 0)) (or .cse0 (not (= (mod c_~CELLCOUNT~0 2) 0))) (forall ((|v_ULTIMATE.start_main_~i~0#1_236| Int) (v_ArrVal_471 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_236| .cse1) (forall ((|v_ULTIMATE.start_main_~i~0#1_235| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_235| (+ |v_ULTIMATE.start_main_~i~0#1_236| 1)) (forall ((|v_ULTIMATE.start_main_~i~0#1_234| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_234| (+ .cse2 1)) (< |v_ULTIMATE.start_main_~i~0#1_234| (+ |v_ULTIMATE.start_main_~i~0#1_235| 1)) (< (select (store (store (store (store .cse3 .cse4 v_ArrVal_471) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_236|) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 8)) 0) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_235|) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_234|) (- 8)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) .cse5)))))))))) is different from false [2023-12-18 18:37:18,706 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 49 treesize of output 47 [2023-12-18 18:37:18,709 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 232 treesize of output 230 [2023-12-18 18:37:18,871 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 49 treesize of output 47 [2023-12-18 18:37:18,875 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 232 treesize of output 230 [2023-12-18 18:37:19,042 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 41 treesize of output 39 [2023-12-18 18:37:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 87 trivial. 6 not checked. [2023-12-18 18:37:19,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758046392] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:37:19,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:37:19,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2023-12-18 18:37:19,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729872173] [2023-12-18 18:37:19,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:37:19,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-18 18:37:19,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:37:19,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-18 18:37:19,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1538, Unknown=2, NotChecked=162, Total=1892 [2023-12-18 18:37:19,125 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand has 44 states, 44 states have (on average 2.5454545454545454) internal successors, (112), 44 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) [2023-12-18 18:37:52,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:37:56,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:38:14,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:38:18,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:38:24,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:38:41,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:38:49,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:38:54,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:38:55,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:39:04,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:39:08,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:39:21,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:39:25,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:39:33,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:39:37,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:39:41,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:39:54,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:39:58,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:40:03,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:40:08,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:40:08,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:40:08,043 INFO L93 Difference]: Finished difference Result 253 states and 281 transitions. [2023-12-18 18:40:08,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-12-18 18:40:08,053 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.5454545454545454) internal successors, (112), 44 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) Word has length 58 [2023-12-18 18:40:08,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:40:08,054 INFO L225 Difference]: With dead ends: 253 [2023-12-18 18:40:08,054 INFO L226 Difference]: Without dead ends: 219 [2023-12-18 18:40:08,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 87 SyntacticMatches, 3 SemanticMatches, 115 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3536 ImplicationChecksByTransitivity, 91.4s TimeCoverageRelationStatistics Valid=1872, Invalid=11221, Unknown=25, NotChecked=454, Total=13572 [2023-12-18 18:40:08,055 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 436 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 194 mSolverCounterUnsat, 29 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 29 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 87.4s IncrementalHoareTripleChecker+Time [2023-12-18 18:40:08,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 255 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1808 Invalid, 29 Unknown, 318 Unchecked, 87.4s Time] [2023-12-18 18:40:08,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-18 18:40:08,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 154. [2023-12-18 18:40:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.0980392156862746) internal successors, (168), 153 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:08,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 168 transitions. [2023-12-18 18:40:08,094 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 168 transitions. Word has length 58 [2023-12-18 18:40:08,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:40:08,094 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 168 transitions. [2023-12-18 18:40:08,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.5454545454545454) internal successors, (112), 44 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) [2023-12-18 18:40:08,095 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 168 transitions. [2023-12-18 18:40:08,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-18 18:40:08,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:40:08,095 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:40:08,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-18 18:40:08,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:40:08,302 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:40:08,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:40:08,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1441342679, now seen corresponding path program 9 times [2023-12-18 18:40:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:40:08,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739571562] [2023-12-18 18:40:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:40:08,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:40:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:40:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 14 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:08,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:40:08,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739571562] [2023-12-18 18:40:08,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739571562] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:40:08,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449014379] [2023-12-18 18:40:08,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 18:40:08,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:40:08,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:40:08,810 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:40:08,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-18 18:40:09,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-18 18:40:09,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:40:09,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-18 18:40:09,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:40:09,156 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 [2023-12-18 18:40:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 14 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:09,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:40:09,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 18:40:09,759 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 18 treesize of output 14 [2023-12-18 18:40:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 14 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:09,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449014379] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:40:09,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:40:09,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 16] total 42 [2023-12-18 18:40:09,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607714740] [2023-12-18 18:40:09,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:40:09,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-18 18:40:09,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:40:09,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-18 18:40:09,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1577, Unknown=0, NotChecked=0, Total=1722 [2023-12-18 18:40:09,864 INFO L87 Difference]: Start difference. First operand 154 states and 168 transitions. Second operand has 42 states, 42 states have (on average 4.0) internal successors, (168), 42 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:12,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:40:12,568 INFO L93 Difference]: Finished difference Result 336 states and 363 transitions. [2023-12-18 18:40:12,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-18 18:40:12,569 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.0) internal successors, (168), 42 states have internal predecessors, (168), 0 states have call successors, (0), 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 63 [2023-12-18 18:40:12,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:40:12,570 INFO L225 Difference]: With dead ends: 336 [2023-12-18 18:40:12,570 INFO L226 Difference]: Without dead ends: 327 [2023-12-18 18:40:12,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3777 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1258, Invalid=12082, Unknown=0, NotChecked=0, Total=13340 [2023-12-18 18:40:12,572 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 283 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-18 18:40:12,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 403 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-18 18:40:12,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-18 18:40:12,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 159. [2023-12-18 18:40:12,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.0949367088607596) internal successors, (173), 158 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:12,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 173 transitions. [2023-12-18 18:40:12,615 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 173 transitions. Word has length 63 [2023-12-18 18:40:12,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:40:12,615 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 173 transitions. [2023-12-18 18:40:12,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.0) internal successors, (168), 42 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:12,615 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 173 transitions. [2023-12-18 18:40:12,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-18 18:40:12,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:40:12,616 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:40:12,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-18 18:40:12,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:40:12,822 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:40:12,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:40:12,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1384835633, now seen corresponding path program 5 times [2023-12-18 18:40:12,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:40:12,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640786627] [2023-12-18 18:40:12,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:40:12,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:40:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:40:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:13,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:40:13,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640786627] [2023-12-18 18:40:13,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640786627] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:40:13,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117383669] [2023-12-18 18:40:13,255 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 18:40:13,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:40:13,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:40:13,256 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:40:13,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-18 18:40:13,386 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-12-18 18:40:13,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:40:13,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-18 18:40:13,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:40:13,502 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 11 treesize of output 7 [2023-12-18 18:40:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:13,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:40:13,984 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 17 treesize of output 15 [2023-12-18 18:40:13,985 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 16 treesize of output 12 [2023-12-18 18:40:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:14,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117383669] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:40:14,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:40:14,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 34 [2023-12-18 18:40:14,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874264609] [2023-12-18 18:40:14,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:40:14,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-18 18:40:14,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:40:14,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-18 18:40:14,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2023-12-18 18:40:14,004 INFO L87 Difference]: Start difference. First operand 159 states and 173 transitions. Second operand has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 34 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:17,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:40:17,335 INFO L93 Difference]: Finished difference Result 414 states and 456 transitions. [2023-12-18 18:40:17,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-18 18:40:17,335 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 34 states have internal predecessors, (132), 0 states have call successors, (0), 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 63 [2023-12-18 18:40:17,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:40:17,337 INFO L225 Difference]: With dead ends: 414 [2023-12-18 18:40:17,337 INFO L226 Difference]: Without dead ends: 412 [2023-12-18 18:40:17,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9604 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2054, Invalid=23706, Unknown=0, NotChecked=0, Total=25760 [2023-12-18 18:40:17,340 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 224 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 3223 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 3406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 3223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-18 18:40:17,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 504 Invalid, 3406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 3223 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-18 18:40:17,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-12-18 18:40:17,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 169. [2023-12-18 18:40:17,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.0952380952380953) internal successors, (184), 168 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) [2023-12-18 18:40:17,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 184 transitions. [2023-12-18 18:40:17,381 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 184 transitions. Word has length 63 [2023-12-18 18:40:17,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:40:17,381 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 184 transitions. [2023-12-18 18:40:17,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 34 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:17,382 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 184 transitions. [2023-12-18 18:40:17,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-18 18:40:17,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:40:17,382 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:40:17,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-18 18:40:17,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:40:17,589 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:40:17,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:40:17,590 INFO L85 PathProgramCache]: Analyzing trace with hash -733209425, now seen corresponding path program 10 times [2023-12-18 18:40:17,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:40:17,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851340919] [2023-12-18 18:40:17,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:40:17,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:40:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:40:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 136 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:18,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:40:18,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851340919] [2023-12-18 18:40:18,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851340919] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:40:18,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008642263] [2023-12-18 18:40:18,122 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 18:40:18,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:40:18,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:40:18,123 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:40:18,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-18 18:40:18,196 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 18:40:18,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:40:18,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-18 18:40:18,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:40:18,789 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 172 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:18,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:40:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 172 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:19,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008642263] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:40:19,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:40:19,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 51 [2023-12-18 18:40:19,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799048076] [2023-12-18 18:40:19,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:40:19,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-18 18:40:19,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:40:19,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-18 18:40:19,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=542, Invalid=2008, Unknown=0, NotChecked=0, Total=2550 [2023-12-18 18:40:19,128 INFO L87 Difference]: Start difference. First operand 169 states and 184 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) [2023-12-18 18:40:19,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:40:19,716 INFO L93 Difference]: Finished difference Result 312 states and 340 transitions. [2023-12-18 18:40:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-18 18:40:19,717 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 68 [2023-12-18 18:40:19,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:40:19,718 INFO L225 Difference]: With dead ends: 312 [2023-12-18 18:40:19,718 INFO L226 Difference]: Without dead ends: 190 [2023-12-18 18:40:19,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1636 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1046, Invalid=3646, Unknown=0, NotChecked=0, Total=4692 [2023-12-18 18:40:19,719 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 257 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 18:40:19,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 269 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 18:40:19,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-18 18:40:19,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 181. [2023-12-18 18:40:19,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.0888888888888888) internal successors, (196), 180 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:19,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 196 transitions. [2023-12-18 18:40:19,770 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 196 transitions. Word has length 68 [2023-12-18 18:40:19,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:40:19,770 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 196 transitions. [2023-12-18 18:40:19,770 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) [2023-12-18 18:40:19,770 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 196 transitions. [2023-12-18 18:40:19,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-18 18:40:19,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:40:19,771 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:40:19,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-18 18:40:19,975 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,SelfDestructingSolverStorable25 [2023-12-18 18:40:19,975 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:40:19,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:40:19,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1074623784, now seen corresponding path program 11 times [2023-12-18 18:40:19,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:40:19,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536343569] [2023-12-18 18:40:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:40:19,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:40:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:40:20,557 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 16 proven. 201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:20,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:40:20,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536343569] [2023-12-18 18:40:20,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536343569] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:40:20,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219657404] [2023-12-18 18:40:20,558 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 18:40:20,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:40:20,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:40:20,560 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:40:20,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-18 18:40:20,710 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-12-18 18:40:20,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:40:20,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-18 18:40:20,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:40:20,779 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 11 treesize of output 7 [2023-12-18 18:40:20,808 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 19 treesize of output 18 [2023-12-18 18:40:20,872 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:40:20,873 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 [2023-12-18 18:40:20,913 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:40:20,913 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 [2023-12-18 18:40:21,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:40:21,013 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 [2023-12-18 18:40:21,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:40:21,064 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 [2023-12-18 18:40:21,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:40:21,189 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 59 treesize of output 65 [2023-12-18 18:40:21,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:40:21,246 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 71 treesize of output 72 [2023-12-18 18:40:22,482 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:40:22,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 81 treesize of output 25 [2023-12-18 18:40:22,486 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 16 proven. 201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:22,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:40:23,496 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 79 treesize of output 75 [2023-12-18 18:40:23,500 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:40:23,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1199 treesize of output 1071 [2023-12-18 18:40:23,602 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 16 proven. 201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:23,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219657404] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:40:23,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:40:23,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 28, 23] total 67 [2023-12-18 18:40:23,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359990141] [2023-12-18 18:40:23,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:40:23,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-18 18:40:23,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:40:23,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-18 18:40:23,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=4097, Unknown=0, NotChecked=0, Total=4422 [2023-12-18 18:40:23,604 INFO L87 Difference]: Start difference. First operand 181 states and 196 transitions. Second operand has 67 states, 67 states have (on average 3.074626865671642) internal successors, (206), 67 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:34,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:40:34,342 INFO L93 Difference]: Finished difference Result 441 states and 479 transitions. [2023-12-18 18:40:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-12-18 18:40:34,342 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.074626865671642) internal successors, (206), 67 states have internal predecessors, (206), 0 states have call successors, (0), 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 72 [2023-12-18 18:40:34,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:40:34,343 INFO L225 Difference]: With dead ends: 441 [2023-12-18 18:40:34,343 INFO L226 Difference]: Without dead ends: 432 [2023-12-18 18:40:34,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 96 SyntacticMatches, 4 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9041 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=3645, Invalid=27861, Unknown=0, NotChecked=0, Total=31506 [2023-12-18 18:40:34,345 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 1125 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 3933 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 4419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 3933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-18 18:40:34,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 975 Invalid, 4419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 3933 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-18 18:40:34,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-12-18 18:40:34,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 254. [2023-12-18 18:40:34,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.1027667984189724) internal successors, (279), 253 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:34,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 279 transitions. [2023-12-18 18:40:34,409 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 279 transitions. Word has length 72 [2023-12-18 18:40:34,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:40:34,410 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 279 transitions. [2023-12-18 18:40:34,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.074626865671642) internal successors, (206), 67 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:34,410 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 279 transitions. [2023-12-18 18:40:34,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-18 18:40:34,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:40:34,411 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 6, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:40:34,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-18 18:40:34,616 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,SelfDestructingSolverStorable26 [2023-12-18 18:40:34,617 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:40:34,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:40:34,617 INFO L85 PathProgramCache]: Analyzing trace with hash 754785380, now seen corresponding path program 4 times [2023-12-18 18:40:34,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:40:34,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867504537] [2023-12-18 18:40:34,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:40:34,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:40:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:40:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:35,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:40:35,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867504537] [2023-12-18 18:40:35,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867504537] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:40:35,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330229753] [2023-12-18 18:40:35,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 18:40:35,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:40:35,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:40:35,128 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:40:35,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-18 18:40:35,245 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 18:40:35,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:40:35,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-18 18:40:35,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:40:35,270 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 [2023-12-18 18:40:35,275 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 29 treesize of output 13 [2023-12-18 18:40:35,641 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:35,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:40:35,804 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 17 treesize of output 15 [2023-12-18 18:40:35,806 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 16 treesize of output 12 [2023-12-18 18:40:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:35,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330229753] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:40:35,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:40:35,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 33 [2023-12-18 18:40:35,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030557513] [2023-12-18 18:40:35,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:40:35,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-18 18:40:35,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:40:35,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-18 18:40:35,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2023-12-18 18:40:35,823 INFO L87 Difference]: Start difference. First operand 254 states and 279 transitions. Second operand has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:38,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:40:38,933 INFO L93 Difference]: Finished difference Result 482 states and 531 transitions. [2023-12-18 18:40:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2023-12-18 18:40:38,934 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 0 states have call successors, (0), 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 72 [2023-12-18 18:40:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:40:38,935 INFO L225 Difference]: With dead ends: 482 [2023-12-18 18:40:38,935 INFO L226 Difference]: Without dead ends: 480 [2023-12-18 18:40:38,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7555 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1485, Invalid=19685, Unknown=0, NotChecked=0, Total=21170 [2023-12-18 18:40:38,937 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 229 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-18 18:40:38,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 364 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-18 18:40:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-12-18 18:40:39,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 259. [2023-12-18 18:40:39,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.1046511627906976) internal successors, (285), 258 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:39,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 285 transitions. [2023-12-18 18:40:39,002 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 285 transitions. Word has length 72 [2023-12-18 18:40:39,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:40:39,002 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 285 transitions. [2023-12-18 18:40:39,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:39,003 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 285 transitions. [2023-12-18 18:40:39,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-18 18:40:39,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:40:39,004 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:40:39,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-18 18:40:39,209 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,SelfDestructingSolverStorable27 [2023-12-18 18:40:39,210 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:40:39,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:40:39,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1799369524, now seen corresponding path program 6 times [2023-12-18 18:40:39,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:40:39,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62042601] [2023-12-18 18:40:39,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:40:39,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:40:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:40:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:39,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:40:39,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62042601] [2023-12-18 18:40:39,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62042601] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:40:39,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254182257] [2023-12-18 18:40:39,683 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 18:40:39,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:40:39,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:40:39,684 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:40:39,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-18 18:40:39,899 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-12-18 18:40:39,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:40:39,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-18 18:40:39,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:40:39,927 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 [2023-12-18 18:40:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:40,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:40:40,325 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 17 treesize of output 15 [2023-12-18 18:40:40,326 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 16 treesize of output 12 [2023-12-18 18:40:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:40,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254182257] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:40:40,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:40:40,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 31 [2023-12-18 18:40:40,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676184517] [2023-12-18 18:40:40,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:40:40,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-18 18:40:40,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:40:40,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-18 18:40:40,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2023-12-18 18:40:40,345 INFO L87 Difference]: Start difference. First operand 259 states and 285 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 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) [2023-12-18 18:40:45,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:40:45,619 INFO L93 Difference]: Finished difference Result 591 states and 654 transitions. [2023-12-18 18:40:45,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2023-12-18 18:40:45,620 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 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 77 [2023-12-18 18:40:45,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:40:45,621 INFO L225 Difference]: With dead ends: 591 [2023-12-18 18:40:45,621 INFO L226 Difference]: Without dead ends: 589 [2023-12-18 18:40:45,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19213 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2583, Invalid=45159, Unknown=0, NotChecked=0, Total=47742 [2023-12-18 18:40:45,626 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 294 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 3907 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 4207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 3907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-18 18:40:45,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 521 Invalid, 4207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 3907 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-18 18:40:45,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-12-18 18:40:45,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 281. [2023-12-18 18:40:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.1107142857142858) internal successors, (311), 280 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 311 transitions. [2023-12-18 18:40:45,707 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 311 transitions. Word has length 77 [2023-12-18 18:40:45,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:40:45,708 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 311 transitions. [2023-12-18 18:40:45,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 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) [2023-12-18 18:40:45,708 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 311 transitions. [2023-12-18 18:40:45,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-18 18:40:45,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:40:45,709 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:40:45,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-18 18:40:45,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:40:45,909 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:40:45,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:40:45,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1562607528, now seen corresponding path program 7 times [2023-12-18 18:40:45,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:40:45,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541528613] [2023-12-18 18:40:45,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:40:45,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:40:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:40:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 16 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:46,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:40:46,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541528613] [2023-12-18 18:40:46,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541528613] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:40:46,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410705277] [2023-12-18 18:40:46,693 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 18:40:46,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:40:46,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:40:46,694 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:40:46,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-18 18:40:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:40:46,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-18 18:40:46,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:40:47,007 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 11 treesize of output 7 [2023-12-18 18:40:47,043 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 11 [2023-12-18 18:40:47,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:40:47,090 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 [2023-12-18 18:40:47,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:40:47,138 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:40:47,138 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 42 treesize of output 25 [2023-12-18 18:40:47,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:40:47,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:40:47,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:40:47,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:40:47,217 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 42 treesize of output 36 [2023-12-18 18:40:47,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:40:47,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:40:47,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:40:47,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:40:47,287 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 61 treesize of output 39 [2023-12-18 18:40:56,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:40:56,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:40:56,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:40:56,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:40:56,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 13 [2023-12-18 18:40:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 18 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:56,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:40:58,383 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 27 treesize of output 25 [2023-12-18 18:40:58,388 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 54 treesize of output 50 [2023-12-18 18:40:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 16 proven. 245 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 18:40:58,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410705277] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:40:58,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:40:58,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 22] total 64 [2023-12-18 18:40:58,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892006651] [2023-12-18 18:40:58,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:40:58,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-18 18:40:58,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:40:58,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-18 18:40:58,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=3746, Unknown=3, NotChecked=0, Total=4032 [2023-12-18 18:40:58,626 INFO L87 Difference]: Start difference. First operand 281 states and 311 transitions. Second operand has 64 states, 64 states have (on average 3.578125) internal successors, (229), 64 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) [2023-12-18 18:41:05,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:41:10,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:41:13,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:41:17,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:41:21,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:41:26,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:41:30,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:41:35,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:41:47,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:41:52,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:41:59,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:42:04,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:42:07,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:42:10,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:42:10,789 INFO L93 Difference]: Finished difference Result 482 states and 519 transitions. [2023-12-18 18:42:10,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-18 18:42:10,789 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.578125) internal successors, (229), 64 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 80 [2023-12-18 18:42:10,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:42:10,790 INFO L225 Difference]: With dead ends: 482 [2023-12-18 18:42:10,791 INFO L226 Difference]: Without dead ends: 468 [2023-12-18 18:42:10,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 118 SyntacticMatches, 6 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5371 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=1755, Invalid=18537, Unknown=14, NotChecked=0, Total=20306 [2023-12-18 18:42:10,792 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 426 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 4160 mSolverCounterSat, 230 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 4421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 4160 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.5s IncrementalHoareTripleChecker+Time [2023-12-18 18:42:10,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1436 Invalid, 4421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 4160 Invalid, 31 Unknown, 0 Unchecked, 62.5s Time] [2023-12-18 18:42:10,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-12-18 18:42:10,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 228. [2023-12-18 18:42:10,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.1013215859030836) internal successors, (250), 227 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 250 transitions. [2023-12-18 18:42:10,863 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 250 transitions. Word has length 80 [2023-12-18 18:42:10,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:42:10,863 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 250 transitions. [2023-12-18 18:42:10,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.578125) internal successors, (229), 64 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) [2023-12-18 18:42:10,864 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 250 transitions. [2023-12-18 18:42:10,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-18 18:42:10,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:42:10,864 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:42:10,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-18 18:42:11,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:42:11,070 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:42:11,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:42:11,070 INFO L85 PathProgramCache]: Analyzing trace with hash 304032488, now seen corresponding path program 12 times [2023-12-18 18:42:11,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:42:11,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700117931] [2023-12-18 18:42:11,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:42:11,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:42:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:42:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 219 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:42:11,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:42:11,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700117931] [2023-12-18 18:42:11,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700117931] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:42:11,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891446135] [2023-12-18 18:42:11,752 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 18:42:11,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:42:11,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:42:11,754 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:42:11,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-18 18:42:11,987 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-18 18:42:11,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:42:11,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-18 18:42:11,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:42:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 265 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:42:12,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:42:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 265 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:42:13,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891446135] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:42:13,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:42:13,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 21] total 61 [2023-12-18 18:42:13,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951246036] [2023-12-18 18:42:13,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:42:13,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-18 18:42:13,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:42:13,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-18 18:42:13,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=834, Invalid=2826, Unknown=0, NotChecked=0, Total=3660 [2023-12-18 18:42:13,225 INFO L87 Difference]: Start difference. First operand 228 states and 250 transitions. Second operand has 61 states, 61 states have (on average 3.8688524590163933) internal successors, (236), 61 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:13,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:42:13,728 INFO L93 Difference]: Finished difference Result 424 states and 461 transitions. [2023-12-18 18:42:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-18 18:42:13,728 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.8688524590163933) internal successors, (236), 61 states have internal predecessors, (236), 0 states have call successors, (0), 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 [2023-12-18 18:42:13,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:42:13,729 INFO L225 Difference]: With dead ends: 424 [2023-12-18 18:42:13,729 INFO L226 Difference]: Without dead ends: 272 [2023-12-18 18:42:13,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1954 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1173, Invalid=3797, Unknown=0, NotChecked=0, Total=4970 [2023-12-18 18:42:13,730 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 327 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 18:42:13,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 286 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 18:42:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-18 18:42:13,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 236. [2023-12-18 18:42:13,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.0936170212765957) internal successors, (257), 235 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:13,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 257 transitions. [2023-12-18 18:42:13,791 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 257 transitions. Word has length 82 [2023-12-18 18:42:13,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:42:13,791 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 257 transitions. [2023-12-18 18:42:13,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.8688524590163933) internal successors, (236), 61 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:13,791 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 257 transitions. [2023-12-18 18:42:13,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-18 18:42:13,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:42:13,791 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:42:13,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-18 18:42:13,992 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,SelfDestructingSolverStorable30 [2023-12-18 18:42:13,992 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:42:13,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:42:13,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1029421985, now seen corresponding path program 13 times [2023-12-18 18:42:13,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:42:13,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487054288] [2023-12-18 18:42:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:42:13,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:42:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:42:14,665 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 20 proven. 311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:42:14,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:42:14,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487054288] [2023-12-18 18:42:14,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487054288] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:42:14,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123101141] [2023-12-18 18:42:14,665 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 18:42:14,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:42:14,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:42:14,666 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:42:14,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-18 18:42:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:42:14,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-18 18:42:14,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:42:15,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 18:42:15,057 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 11 [2023-12-18 18:42:15,621 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 15 treesize of output 7 [2023-12-18 18:42:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 20 proven. 311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:42:15,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:42:16,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 18:42:16,120 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 24 treesize of output 20 [2023-12-18 18:42:16,397 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 20 proven. 311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:42:16,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123101141] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:42:16,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:42:16,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 22] total 64 [2023-12-18 18:42:16,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396554811] [2023-12-18 18:42:16,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:42:16,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-18 18:42:16,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:42:16,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-18 18:42:16,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=3803, Unknown=0, NotChecked=0, Total=4032 [2023-12-18 18:42:16,399 INFO L87 Difference]: Start difference. First operand 236 states and 257 transitions. Second operand has 64 states, 64 states have (on average 3.875) internal successors, (248), 64 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:26,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:42:26,721 INFO L93 Difference]: Finished difference Result 604 states and 651 transitions. [2023-12-18 18:42:26,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2023-12-18 18:42:26,722 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.875) internal successors, (248), 64 states have internal predecessors, (248), 0 states have call successors, (0), 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 86 [2023-12-18 18:42:26,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:42:26,723 INFO L225 Difference]: With dead ends: 604 [2023-12-18 18:42:26,724 INFO L226 Difference]: Without dead ends: 595 [2023-12-18 18:42:26,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17934 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=3853, Invalid=55439, Unknown=0, NotChecked=0, Total=59292 [2023-12-18 18:42:26,727 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 924 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 3955 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 4496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 3955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-18 18:42:26,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 972 Invalid, 4496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [541 Valid, 3955 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-18 18:42:26,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-12-18 18:42:26,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 295. [2023-12-18 18:42:26,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.0850340136054422) internal successors, (319), 294 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:26,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 319 transitions. [2023-12-18 18:42:26,808 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 319 transitions. Word has length 86 [2023-12-18 18:42:26,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:42:26,808 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 319 transitions. [2023-12-18 18:42:26,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.875) internal successors, (248), 64 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:26,808 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 319 transitions. [2023-12-18 18:42:26,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-18 18:42:26,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:42:26,809 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 8, 6, 6, 6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:42:26,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-18 18:42:27,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-18 18:42:27,009 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:42:27,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:42:27,010 INFO L85 PathProgramCache]: Analyzing trace with hash -335996899, now seen corresponding path program 5 times [2023-12-18 18:42:27,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:42:27,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999194713] [2023-12-18 18:42:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:42:27,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:42:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:42:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 125 proven. 185 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-18 18:42:27,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:42:27,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999194713] [2023-12-18 18:42:27,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999194713] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:42:27,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043281457] [2023-12-18 18:42:27,800 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 18:42:27,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:42:27,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:42:27,801 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:42:27,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-18 18:42:27,994 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-12-18 18:42:27,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:42:27,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-18 18:42:27,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:42:28,174 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 11 treesize of output 7 [2023-12-18 18:42:28,202 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 11 [2023-12-18 18:42:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:42:28,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:42:29,264 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 17 treesize of output 15 [2023-12-18 18:42:29,265 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 16 treesize of output 12 [2023-12-18 18:42:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:42:29,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043281457] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:42:29,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:42:29,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 23] total 64 [2023-12-18 18:42:29,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752893089] [2023-12-18 18:42:29,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:42:29,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-18 18:42:29,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:42:29,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-18 18:42:29,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=3793, Unknown=0, NotChecked=0, Total=4032 [2023-12-18 18:42:29,452 INFO L87 Difference]: Start difference. First operand 295 states and 319 transitions. Second operand has 64 states, 64 states have (on average 3.8125) internal successors, (244), 64 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:38,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:42:38,729 INFO L93 Difference]: Finished difference Result 571 states and 630 transitions. [2023-12-18 18:42:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-12-18 18:42:38,729 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.8125) internal successors, (244), 64 states have internal predecessors, (244), 0 states have call successors, (0), 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 86 [2023-12-18 18:42:38,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:42:38,733 INFO L225 Difference]: With dead ends: 571 [2023-12-18 18:42:38,733 INFO L226 Difference]: Without dead ends: 552 [2023-12-18 18:42:38,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18202 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=4384, Invalid=52976, Unknown=0, NotChecked=0, Total=57360 [2023-12-18 18:42:38,736 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1172 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 4335 mSolverCounterSat, 674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 5009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 674 IncrementalHoareTripleChecker+Valid, 4335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-18 18:42:38,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 512 Invalid, 5009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [674 Valid, 4335 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-18 18:42:38,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-12-18 18:42:38,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 403. [2023-12-18 18:42:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.0945273631840795) internal successors, (440), 402 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:38,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 440 transitions. [2023-12-18 18:42:38,864 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 440 transitions. Word has length 86 [2023-12-18 18:42:38,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:42:38,864 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 440 transitions. [2023-12-18 18:42:38,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.8125) internal successors, (244), 64 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:38,864 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 440 transitions. [2023-12-18 18:42:38,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-18 18:42:38,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:42:38,865 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:42:38,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-18 18:42:39,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:42:39,073 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:42:39,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:42:39,073 INFO L85 PathProgramCache]: Analyzing trace with hash 330970149, now seen corresponding path program 14 times [2023-12-18 18:42:39,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:42:39,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371202829] [2023-12-18 18:42:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:42:39,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:42:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:42:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 22 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:42:39,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:42:39,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371202829] [2023-12-18 18:42:39,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371202829] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:42:39,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235673952] [2023-12-18 18:42:39,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 18:42:39,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:42:39,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:42:39,774 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:42:39,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-18 18:42:39,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 18:42:39,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:42:39,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-18 18:42:39,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:42:40,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 18:42:40,931 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 15 treesize of output 7 [2023-12-18 18:42:40,934 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 22 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:42:40,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:42:41,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 18:42:41,461 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 24 treesize of output 20 [2023-12-18 18:42:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 22 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:42:41,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235673952] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:42:41,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:42:41,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 23] total 66 [2023-12-18 18:42:41,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450870948] [2023-12-18 18:42:41,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:42:41,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-18 18:42:41,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:42:41,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-18 18:42:41,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=4057, Unknown=0, NotChecked=0, Total=4290 [2023-12-18 18:42:41,768 INFO L87 Difference]: Start difference. First operand 403 states and 440 transitions. Second operand has 66 states, 66 states have (on average 3.984848484848485) internal successors, (263), 66 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:50,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:42:50,970 INFO L93 Difference]: Finished difference Result 723 states and 775 transitions. [2023-12-18 18:42:50,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-12-18 18:42:50,970 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.984848484848485) internal successors, (263), 66 states have internal predecessors, (263), 0 states have call successors, (0), 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 91 [2023-12-18 18:42:50,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:42:50,972 INFO L225 Difference]: With dead ends: 723 [2023-12-18 18:42:50,972 INFO L226 Difference]: Without dead ends: 714 [2023-12-18 18:42:50,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12341 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=3400, Invalid=41332, Unknown=0, NotChecked=0, Total=44732 [2023-12-18 18:42:50,974 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 916 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 4334 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 4874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 4334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-18 18:42:50,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1093 Invalid, 4874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 4334 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-18 18:42:50,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2023-12-18 18:42:51,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 408. [2023-12-18 18:42:51,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 1.0933660933660934) internal successors, (445), 407 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:51,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 445 transitions. [2023-12-18 18:42:51,124 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 445 transitions. Word has length 91 [2023-12-18 18:42:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:42:51,125 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 445 transitions. [2023-12-18 18:42:51,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.984848484848485) internal successors, (263), 66 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:51,125 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 445 transitions. [2023-12-18 18:42:51,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-18 18:42:51,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:42:51,126 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:42:51,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-18 18:42:51,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:42:51,332 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:42:51,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:42:51,333 INFO L85 PathProgramCache]: Analyzing trace with hash 503415193, now seen corresponding path program 8 times [2023-12-18 18:42:51,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:42:51,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805192484] [2023-12-18 18:42:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:42:51,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:42:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:42:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:42:51,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:42:51,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805192484] [2023-12-18 18:42:51,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805192484] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:42:51,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845845015] [2023-12-18 18:42:51,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 18:42:51,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:42:51,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:42:51,944 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:42:51,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-18 18:42:52,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 18:42:52,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:42:52,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-18 18:42:52,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:42:52,257 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 11 treesize of output 7 [2023-12-18 18:42:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:42:52,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:42:52,977 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 17 treesize of output 15 [2023-12-18 18:42:52,979 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 16 treesize of output 12 [2023-12-18 18:42:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:42:53,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845845015] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:42:53,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:42:53,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 23] total 46 [2023-12-18 18:42:53,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442824456] [2023-12-18 18:42:53,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:42:53,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-18 18:42:53,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:42:53,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-18 18:42:53,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1899, Unknown=0, NotChecked=0, Total=2070 [2023-12-18 18:42:53,001 INFO L87 Difference]: Start difference. First operand 408 states and 445 transitions. Second operand has 46 states, 46 states have (on average 4.086956521739131) internal successors, (188), 46 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:43:01,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:43:01,759 INFO L93 Difference]: Finished difference Result 852 states and 930 transitions. [2023-12-18 18:43:01,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 306 states. [2023-12-18 18:43:01,759 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.086956521739131) internal successors, (188), 46 states have internal predecessors, (188), 0 states have call successors, (0), 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 91 [2023-12-18 18:43:01,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:43:01,761 INFO L225 Difference]: With dead ends: 852 [2023-12-18 18:43:01,761 INFO L226 Difference]: Without dead ends: 850 [2023-12-18 18:43:01,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45482 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=5330, Invalid=103240, Unknown=0, NotChecked=0, Total=108570 [2023-12-18 18:43:01,765 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 515 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 6393 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 6850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 6393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-18 18:43:01,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 865 Invalid, 6850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 6393 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-18 18:43:01,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2023-12-18 18:43:01,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 418. [2023-12-18 18:43:01,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.0935251798561152) internal successors, (456), 417 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:43:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 456 transitions. [2023-12-18 18:43:01,902 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 456 transitions. Word has length 91 [2023-12-18 18:43:01,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:43:01,902 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 456 transitions. [2023-12-18 18:43:01,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.086956521739131) internal successors, (188), 46 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:43:01,902 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 456 transitions. [2023-12-18 18:43:01,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-18 18:43:01,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:43:01,903 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:43:01,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-18 18:43:02,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:43:02,109 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:43:02,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:43:02,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1205129370, now seen corresponding path program 15 times [2023-12-18 18:43:02,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:43:02,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935602734] [2023-12-18 18:43:02,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:43:02,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:43:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:43:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 30 proven. 339 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:43:03,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:43:03,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935602734] [2023-12-18 18:43:03,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935602734] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:43:03,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664521031] [2023-12-18 18:43:03,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 18:43:03,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:43:03,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:43:03,321 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:43:03,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-18 18:43:03,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-18 18:43:03,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:43:03,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-18 18:43:03,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:43:03,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-18 18:43:03,948 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 26 treesize of output 25 [2023-12-18 18:43:03,988 INFO L349 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-12-18 18:43:03,988 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 2 case distinctions, treesize of input 38 treesize of output 40 [2023-12-18 18:43:04,121 INFO L349 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2023-12-18 18:43:04,121 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 4 case distinctions, treesize of input 50 treesize of output 55 [2023-12-18 18:43:04,211 INFO L349 Elim1Store]: treesize reduction 55, result has 28.6 percent of original size [2023-12-18 18:43:04,211 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 8 case distinctions, treesize of input 62 treesize of output 70 [2023-12-18 18:43:04,408 INFO L349 Elim1Store]: treesize reduction 74, result has 25.3 percent of original size [2023-12-18 18:43:04,409 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 12 case distinctions, treesize of input 74 treesize of output 85 [2023-12-18 18:43:04,532 INFO L349 Elim1Store]: treesize reduction 108, result has 23.9 percent of original size [2023-12-18 18:43:04,532 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 18 case distinctions, treesize of input 86 treesize of output 100 [2023-12-18 18:43:04,803 INFO L349 Elim1Store]: treesize reduction 135, result has 21.5 percent of original size [2023-12-18 18:43:04,803 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 24 case distinctions, treesize of input 113 treesize of output 112 [2023-12-18 18:43:05,028 INFO L349 Elim1Store]: treesize reduction 177, result has 20.6 percent of original size [2023-12-18 18:43:05,029 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 32 case distinctions, treesize of input 149 treesize of output 127 [2023-12-18 18:43:08,013 INFO L349 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2023-12-18 18:43:08,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 154 treesize of output 28 [2023-12-18 18:43:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 36 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:43:08,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:43:09,374 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 27 treesize of output 25 [2023-12-18 18:43:09,376 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 27 treesize of output 23 [2023-12-18 18:43:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 18 proven. 327 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-18 18:43:09,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664521031] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:43:09,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:43:09,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 31, 21] total 68 [2023-12-18 18:43:09,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269344032] [2023-12-18 18:43:09,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:43:09,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-18 18:43:09,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:43:09,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-18 18:43:09,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=4254, Unknown=0, NotChecked=0, Total=4556 [2023-12-18 18:43:09,396 INFO L87 Difference]: Start difference. First operand 418 states and 456 transitions. Second operand has 68 states, 68 states have (on average 3.4705882352941178) internal successors, (236), 68 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:43:13,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:43:14,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:43:18,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:43:23,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:43:27,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:43:31,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:43:36,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:43:40,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:43:44,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:43:48,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:43:53,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:44:04,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:44:04,004 INFO L93 Difference]: Finished difference Result 547 states and 588 transitions. [2023-12-18 18:44:04,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-18 18:44:04,004 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.4705882352941178) internal successors, (236), 68 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-18 18:44:04,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:44:04,006 INFO L225 Difference]: With dead ends: 547 [2023-12-18 18:44:04,006 INFO L226 Difference]: Without dead ends: 528 [2023-12-18 18:44:04,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 135 SyntacticMatches, 16 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7203 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=1607, Invalid=20442, Unknown=3, NotChecked=0, Total=22052 [2023-12-18 18:44:04,007 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 406 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 3714 mSolverCounterSat, 178 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 3910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 3714 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.6s IncrementalHoareTripleChecker+Time [2023-12-18 18:44:04,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1322 Invalid, 3910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 3714 Invalid, 18 Unknown, 0 Unchecked, 44.6s Time] [2023-12-18 18:44:04,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2023-12-18 18:44:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 356. [2023-12-18 18:44:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 1.095774647887324) internal successors, (389), 355 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:44:04,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 389 transitions. [2023-12-18 18:44:04,117 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 389 transitions. Word has length 93 [2023-12-18 18:44:04,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:44:04,118 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 389 transitions. [2023-12-18 18:44:04,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.4705882352941178) internal successors, (236), 68 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:44:04,118 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 389 transitions. [2023-12-18 18:44:04,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-18 18:44:04,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:44:04,119 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:44:04,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-18 18:44:04,326 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,SelfDestructingSolverStorable35 [2023-12-18 18:44:04,326 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:44:04,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:44:04,326 INFO L85 PathProgramCache]: Analyzing trace with hash 786853409, now seen corresponding path program 16 times [2023-12-18 18:44:04,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:44:04,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331576006] [2023-12-18 18:44:04,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:44:04,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:44:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:44:05,071 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 322 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:44:05,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:44:05,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331576006] [2023-12-18 18:44:05,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331576006] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:44:05,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478922155] [2023-12-18 18:44:05,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 18:44:05,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:44:05,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:44:05,073 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:44:05,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-18 18:44:05,213 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 18:44:05,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:44:05,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-18 18:44:05,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:44:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 378 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:44:06,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:44:06,705 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 378 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:44:06,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478922155] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:44:06,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:44:06,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 69 [2023-12-18 18:44:06,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729547949] [2023-12-18 18:44:06,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:44:06,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-18 18:44:06,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:44:06,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-18 18:44:06,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=3732, Unknown=0, NotChecked=0, Total=4692 [2023-12-18 18:44:06,708 INFO L87 Difference]: Start difference. First operand 356 states and 389 transitions. Second operand has 69 states, 69 states have (on average 4.0144927536231885) internal successors, (277), 69 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) [2023-12-18 18:44:07,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:44:07,655 INFO L93 Difference]: Finished difference Result 552 states and 599 transitions. [2023-12-18 18:44:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-18 18:44:07,655 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.0144927536231885) internal successors, (277), 69 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 96 [2023-12-18 18:44:07,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:44:07,656 INFO L225 Difference]: With dead ends: 552 [2023-12-18 18:44:07,656 INFO L226 Difference]: Without dead ends: 370 [2023-12-18 18:44:07,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3135 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1820, Invalid=6736, Unknown=0, NotChecked=0, Total=8556 [2023-12-18 18:44:07,657 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 408 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 18:44:07,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 367 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 18:44:07,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-12-18 18:44:07,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 364. [2023-12-18 18:44:07,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.0909090909090908) internal successors, (396), 363 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:44:07,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 396 transitions. [2023-12-18 18:44:07,761 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 396 transitions. Word has length 96 [2023-12-18 18:44:07,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:44:07,761 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 396 transitions. [2023-12-18 18:44:07,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.0144927536231885) internal successors, (277), 69 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) [2023-12-18 18:44:07,762 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 396 transitions. [2023-12-18 18:44:07,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-18 18:44:07,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:44:07,763 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:44:07,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-18 18:44:07,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-18 18:44:07,969 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:44:07,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:44:07,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1551288090, now seen corresponding path program 17 times [2023-12-18 18:44:07,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:44:07,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235638449] [2023-12-18 18:44:07,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:44:07,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:44:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:44:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 24 proven. 445 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:44:08,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:44:08,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235638449] [2023-12-18 18:44:08,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235638449] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:44:08,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642936744] [2023-12-18 18:44:08,843 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 18:44:08,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:44:08,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:44:08,845 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:44:08,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-18 18:44:09,093 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-12-18 18:44:09,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:44:09,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-18 18:44:09,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:44:09,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 18:44:09,498 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 11 [2023-12-18 18:44:10,429 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:44:10,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:44:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 24 proven. 445 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:44:10,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:44:10,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-12-18 18:44:10,999 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 24 treesize of output 20 [2023-12-18 18:44:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 24 proven. 445 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:44:11,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642936744] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:44:11,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:44:11,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 26] total 75 [2023-12-18 18:44:11,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415873136] [2023-12-18 18:44:11,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:44:11,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-12-18 18:44:11,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:44:11,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-12-18 18:44:11,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=5231, Unknown=0, NotChecked=0, Total=5550 [2023-12-18 18:44:11,365 INFO L87 Difference]: Start difference. First operand 364 states and 396 transitions. Second operand has 75 states, 75 states have (on average 3.88) internal successors, (291), 75 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:44:25,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:44:25,817 INFO L93 Difference]: Finished difference Result 794 states and 850 transitions. [2023-12-18 18:44:25,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2023-12-18 18:44:25,817 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.88) internal successors, (291), 75 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-18 18:44:25,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:44:25,819 INFO L225 Difference]: With dead ends: 794 [2023-12-18 18:44:25,819 INFO L226 Difference]: Without dead ends: 785 [2023-12-18 18:44:25,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23752 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=5311, Invalid=68945, Unknown=0, NotChecked=0, Total=74256 [2023-12-18 18:44:25,822 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 863 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 4856 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 5438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 4856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-18 18:44:25,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1231 Invalid, 5438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 4856 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-18 18:44:25,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2023-12-18 18:44:25,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 379. [2023-12-18 18:44:25,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.08994708994709) internal successors, (412), 378 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:44:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 412 transitions. [2023-12-18 18:44:25,945 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 412 transitions. Word has length 100 [2023-12-18 18:44:25,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:44:25,945 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 412 transitions. [2023-12-18 18:44:25,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.88) internal successors, (291), 75 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:44:25,945 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 412 transitions. [2023-12-18 18:44:25,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-18 18:44:25,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:44:25,946 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:44:25,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-18 18:44:26,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-18 18:44:26,147 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:44:26,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:44:26,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1906174378, now seen corresponding path program 6 times [2023-12-18 18:44:26,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:44:26,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606196025] [2023-12-18 18:44:26,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:44:26,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:44:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:44:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:44:26,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:44:26,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606196025] [2023-12-18 18:44:26,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606196025] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:44:26,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108787669] [2023-12-18 18:44:26,880 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 18:44:26,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:44:26,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:44:26,881 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:44:26,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-18 18:44:27,785 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-18 18:44:27,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:44:27,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-18 18:44:27,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:44:27,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-18 18:44:27,934 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 29 treesize of output 13 [2023-12-18 18:44:28,326 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:44:28,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:44:28,683 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 17 treesize of output 15 [2023-12-18 18:44:28,685 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 16 treesize of output 12 [2023-12-18 18:44:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:44:28,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108787669] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:44:28,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:44:28,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 61 [2023-12-18 18:44:28,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195232157] [2023-12-18 18:44:28,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:44:28,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-18 18:44:28,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:44:28,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-18 18:44:28,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=3415, Unknown=0, NotChecked=0, Total=3660 [2023-12-18 18:44:28,710 INFO L87 Difference]: Start difference. First operand 379 states and 412 transitions. Second operand has 61 states, 61 states have (on average 4.311475409836065) internal successors, (263), 61 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:44:37,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:44:37,954 INFO L93 Difference]: Finished difference Result 722 states and 787 transitions. [2023-12-18 18:44:37,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2023-12-18 18:44:37,954 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.311475409836065) internal successors, (263), 61 states have internal predecessors, (263), 0 states have call successors, (0), 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 [2023-12-18 18:44:37,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:44:37,956 INFO L225 Difference]: With dead ends: 722 [2023-12-18 18:44:37,956 INFO L226 Difference]: Without dead ends: 720 [2023-12-18 18:44:37,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31544 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=4548, Invalid=79842, Unknown=0, NotChecked=0, Total=84390 [2023-12-18 18:44:37,960 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 562 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 5623 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 6157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 5623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-18 18:44:37,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 798 Invalid, 6157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 5623 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-18 18:44:37,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2023-12-18 18:44:38,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 384. [2023-12-18 18:44:38,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 1.0913838120104438) internal successors, (418), 383 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:44:38,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 418 transitions. [2023-12-18 18:44:38,086 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 418 transitions. Word has length 100 [2023-12-18 18:44:38,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:44:38,087 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 418 transitions. [2023-12-18 18:44:38,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.311475409836065) internal successors, (263), 61 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:44:38,087 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 418 transitions. [2023-12-18 18:44:38,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-18 18:44:38,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:44:38,088 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:44:38,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-18 18:44:38,294 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,SelfDestructingSolverStorable38 [2023-12-18 18:44:38,295 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:44:38,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:44:38,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1366093570, now seen corresponding path program 9 times [2023-12-18 18:44:38,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:44:38,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368986613] [2023-12-18 18:44:38,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:44:38,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:44:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:44:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:44:38,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:44:38,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368986613] [2023-12-18 18:44:38,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368986613] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:44:38,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167727383] [2023-12-18 18:44:38,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 18:44:38,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:44:38,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:44:38,897 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:44:38,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-18 18:44:39,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-18 18:44:39,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:44:39,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-18 18:44:39,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:44:39,262 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 15 treesize of output 1 [2023-12-18 18:44:39,331 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 [2023-12-18 18:44:39,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:39,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:44:39,375 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 42 treesize of output 25 [2023-12-18 18:44:39,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:39,448 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:44:39,448 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 34 treesize of output 36 [2023-12-18 18:44:39,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:39,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:39,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:44:39,522 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 53 treesize of output 39 [2023-12-18 18:44:39,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:39,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:39,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:39,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:44:39,652 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 45 treesize of output 50 [2023-12-18 18:44:39,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:39,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:39,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:39,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:39,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:44:39,792 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 64 treesize of output 53 [2023-12-18 18:44:40,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:40,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:40,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:40,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:40,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:40,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:40,953 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:44:40,954 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 56 treesize of output 64 [2023-12-18 18:44:41,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:41,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:41,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:41,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:41,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:41,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:41,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:41,562 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:44:41,562 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 75 treesize of output 67 [2023-12-18 18:44:49,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:49,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:49,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:49,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:49,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:49,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:49,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:49,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:49,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:49,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:49,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:44:49,537 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 67 treesize of output 78 [2023-12-18 18:44:54,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:54,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:54,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:54,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:54,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:54,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:54,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:54,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:54,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:54,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:54,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:44:54,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:44:54,196 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 86 treesize of output 81 [2023-12-18 18:45:20,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:20,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:20,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:20,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:20,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:20,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:20,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:20,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:20,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:20,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:20,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:20,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:20,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:20,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:20,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:20,237 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:45:20,237 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 107 treesize of output 89 [2023-12-18 18:45:32,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:32,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:32,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:32,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:32,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:32,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:32,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:32,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:32,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:32,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:32,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:32,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:32,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:32,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:32,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:32,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:32,361 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:45:32,361 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 126 treesize of output 92 [2023-12-18 18:45:33,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:33,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:33,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:33,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:33,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:33,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:33,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:33,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:33,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:33,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:33,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:33,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:33,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:33,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:33,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:45:33,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:45:33,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 110 treesize of output 22 [2023-12-18 18:45:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 136 proven. 43 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2023-12-18 18:45:33,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:48:31,232 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 51 treesize of output 49 [2023-12-18 18:48:31,237 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 3894 treesize of output 3830 [2023-12-18 18:48:31,394 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 107 proven. 48 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-18 18:48:31,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167727383] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:48:31,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:48:31,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 21, 15] total 58 [2023-12-18 18:48:31,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468261576] [2023-12-18 18:48:31,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:48:31,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-18 18:48:31,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:48:31,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-18 18:48:31,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=2958, Unknown=46, NotChecked=0, Total=3306 [2023-12-18 18:48:31,396 INFO L87 Difference]: Start difference. First operand 384 states and 418 transitions. Second operand has 58 states, 58 states have (on average 3.1379310344827585) internal successors, (182), 58 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:48:32,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:48:33,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:48:38,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:48:39,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:48:42,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:48:43,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:48:46,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:48:48,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:48:53,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:48:55,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:49:00,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:49:03,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:49:24,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:49:36,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 18:49:44,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-18 18:49:46,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-18 18:49:48,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-18 18:49:50,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-12-18 18:49:51,846 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 18:49:51,846 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 18:49:52,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-18 18:49:52,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-18 18:49:53,046 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-18 18:49:53,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-18 18:49:53,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 168 SyntacticMatches, 11 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 262.3s TimeCoverageRelationStatistics Valid=1310, Invalid=9343, Unknown=59, NotChecked=0, Total=10712 [2023-12-18 18:49:53,122 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 150 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2476 mSolverCounterSat, 244 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 2742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2476 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.8s IncrementalHoareTripleChecker+Time [2023-12-18 18:49:53,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 85 Invalid, 2742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2476 Invalid, 21 Unknown, 0 Unchecked, 49.8s Time] [2023-12-18 18:49:53,123 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-18 18:49:53,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-18 18:49:53,123 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-18 18:49:53,127 INFO L445 BasicCegarLoop]: Path program histogram: [17, 9, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:49:53,129 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 18:49:53,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 06:49:53 BoogieIcfgContainer [2023-12-18 18:49:53,133 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 18:49:53,134 INFO L158 Benchmark]: Toolchain (without parser) took 842205.58ms. Allocated memory was 257.9MB in the beginning and 647.0MB in the end (delta: 389.0MB). Free memory was 212.2MB in the beginning and 289.3MB in the end (delta: -77.1MB). Peak memory consumption was 313.0MB. Max. memory is 8.0GB. [2023-12-18 18:49:53,134 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 205.5MB. Free memory is still 153.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 18:49:53,135 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.31ms. Allocated memory is still 257.9MB. Free memory was 212.2MB in the beginning and 201.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-18 18:49:53,135 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.34ms. Allocated memory is still 257.9MB. Free memory was 200.6MB in the beginning and 199.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-18 18:49:53,135 INFO L158 Benchmark]: Boogie Preprocessor took 28.96ms. Allocated memory is still 257.9MB. Free memory was 199.1MB in the beginning and 197.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 18:49:53,135 INFO L158 Benchmark]: RCFGBuilder took 312.74ms. Allocated memory is still 257.9MB. Free memory was 197.0MB in the beginning and 183.9MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-18 18:49:53,135 INFO L158 Benchmark]: TraceAbstraction took 841639.45ms. Allocated memory was 257.9MB in the beginning and 647.0MB in the end (delta: 389.0MB). Free memory was 183.3MB in the beginning and 289.3MB in the end (delta: -105.9MB). Peak memory consumption was 284.7MB. Max. memory is 8.0GB. [2023-12-18 18:49:53,136 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 205.5MB. Free memory is still 153.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 193.31ms. Allocated memory is still 257.9MB. Free memory was 212.2MB in the beginning and 201.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.34ms. Allocated memory is still 257.9MB. Free memory was 200.6MB in the beginning and 199.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.96ms. Allocated memory is still 257.9MB. Free memory was 199.1MB in the beginning and 197.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 312.74ms. Allocated memory is still 257.9MB. Free memory was 197.0MB in the beginning and 183.9MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 841639.45ms. Allocated memory was 257.9MB in the beginning and 647.0MB in the end (delta: 389.0MB). Free memory was 183.3MB in the beginning and 289.3MB in the end (delta: -105.9MB). Peak memory consumption was 284.7MB. 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 executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 841.6s, OverallIterations: 40, TraceHistogramMax: 14, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 514.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 106 mSolverCounterUnknown, 13265 SdHoareTripleChecker+Valid, 301.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13265 mSDsluCounter, 15925 SdHoareTripleChecker+Invalid, 295.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 318 IncrementalHoareTripleChecker+Unchecked, 14922 mSDsCounter, 6783 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69961 IncrementalHoareTripleChecker+Invalid, 77169 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6783 mSolverCounterUnsat, 1003 mSDtfsCounter, 69961 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7388 GetRequests, 3263 SyntacticMatches, 61 SemanticMatches, 4064 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 243316 ImplicationChecksByTransitivity, 490.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=418occurred in iteration=35, InterpolantAutomatonStates: 2871, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 39 MinimizatonAttempts, 4589 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 312.1s InterpolantComputationTime, 4233 NumberOfCodeBlocks, 4183 NumberOfCodeBlocksAsserted, 191 NumberOfCheckSat, 6193 ConstructedInterpolants, 227 QuantifiedInterpolants, 88785 SizeOfPredicates, 382 NumberOfNonLiveVariables, 6833 ConjunctsInSsa, 1166 ConjunctsInUnsatCore, 108 InterpolantComputations, 6 PerfectInterpolantSequences, 4660/19235 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