/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/list-properties/simple_built_from_end.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 03:10:05,718 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 03:10:05,764 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 03:10:05,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 03:10:05,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 03:10:05,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 03:10:05,800 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 03:10:05,801 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 03:10:05,801 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 03:10:05,804 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 03:10:05,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 03:10:05,805 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 03:10:05,805 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 03:10:05,805 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 03:10:05,805 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 03:10:05,805 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 03:10:05,806 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 03:10:05,806 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 03:10:05,806 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 03:10:05,806 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 03:10:05,806 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 03:10:05,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 03:10:05,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 03:10:05,807 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 03:10:05,807 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 03:10:05,807 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 03:10:05,807 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 03:10:05,808 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 03:10:05,808 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 03:10:05,808 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 03:10:05,808 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 03:10:05,808 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 03:10:05,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 03:10:05,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 03:10:05,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 03:10:05,809 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 03:10:05,809 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 03:10:05,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 03:10:05,809 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 03:10:05,809 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 03:10:05,810 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 03:10:05,810 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 03:10:05,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 03:10:05,810 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 03:10:06,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 03:10:06,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 03:10:06,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 03:10:06,044 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 03:10:06,045 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 03:10:06,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/simple_built_from_end.i [2023-12-21 03:10:07,149 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 03:10:07,337 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 03:10:07,338 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple_built_from_end.i [2023-12-21 03:10:07,354 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5afafc6af/bf84553bf68e4601b923faa06582a1eb/FLAG1a92b21b0 [2023-12-21 03:10:07,367 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5afafc6af/bf84553bf68e4601b923faa06582a1eb [2023-12-21 03:10:07,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 03:10:07,370 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 03:10:07,372 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 03:10:07,372 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 03:10:07,376 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 03:10:07,376 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:10:07" (1/1) ... [2023-12-21 03:10:07,377 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b19a35d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:07, skipping insertion in model container [2023-12-21 03:10:07,377 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:10:07" (1/1) ... [2023-12-21 03:10:07,413 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 03:10:07,627 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple_built_from_end.i[23125,23138] [2023-12-21 03:10:07,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 03:10:07,641 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 03:10:07,670 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple_built_from_end.i[23125,23138] [2023-12-21 03:10:07,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 03:10:07,700 INFO L206 MainTranslator]: Completed translation [2023-12-21 03:10:07,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:07 WrapperNode [2023-12-21 03:10:07,701 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 03:10:07,702 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 03:10:07,702 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 03:10:07,703 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 03:10:07,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:07" (1/1) ... [2023-12-21 03:10:07,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:07" (1/1) ... [2023-12-21 03:10:07,745 INFO L138 Inliner]: procedures = 124, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2023-12-21 03:10:07,746 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 03:10:07,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 03:10:07,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 03:10:07,747 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 03:10:07,756 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:07" (1/1) ... [2023-12-21 03:10:07,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:07" (1/1) ... [2023-12-21 03:10:07,758 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:07" (1/1) ... [2023-12-21 03:10:07,768 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2023-12-21 03:10:07,768 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:07" (1/1) ... [2023-12-21 03:10:07,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:07" (1/1) ... [2023-12-21 03:10:07,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:07" (1/1) ... [2023-12-21 03:10:07,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:07" (1/1) ... [2023-12-21 03:10:07,775 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:07" (1/1) ... [2023-12-21 03:10:07,776 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:07" (1/1) ... [2023-12-21 03:10:07,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 03:10:07,777 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 03:10:07,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 03:10:07,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 03:10:07,778 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:07" (1/1) ... [2023-12-21 03:10:07,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 03:10:07,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:10:07,805 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) [2023-12-21 03:10:07,808 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 [2023-12-21 03:10:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 03:10:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 03:10:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 03:10:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 03:10:07,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-21 03:10:07,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 03:10:07,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-12-21 03:10:07,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-12-21 03:10:07,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-12-21 03:10:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-12-21 03:10:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 03:10:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 03:10:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 03:10:07,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 03:10:07,959 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 03:10:07,961 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 03:10:08,068 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 03:10:08,096 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 03:10:08,096 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 03:10:08,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:10:08 BoogieIcfgContainer [2023-12-21 03:10:08,097 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 03:10:08,098 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 03:10:08,098 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 03:10:08,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 03:10:08,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:10:07" (1/3) ... [2023-12-21 03:10:08,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4533fe5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:10:08, skipping insertion in model container [2023-12-21 03:10:08,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:10:07" (2/3) ... [2023-12-21 03:10:08,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4533fe5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:10:08, skipping insertion in model container [2023-12-21 03:10:08,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:10:08" (3/3) ... [2023-12-21 03:10:08,102 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_built_from_end.i [2023-12-21 03:10:08,115 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 03:10:08,116 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 03:10:08,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 03:10:08,149 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;@6b92991f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 03:10:08,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 03:10:08,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-21 03:10:08,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:10:08,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-21 03:10:08,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:10:08,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:10:08,160 INFO L85 PathProgramCache]: Analyzing trace with hash 73644442, now seen corresponding path program 1 times [2023-12-21 03:10:08,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:10:08,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970961183] [2023-12-21 03:10:08,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:10:08,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:10:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:10:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:08,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:10:08,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970961183] [2023-12-21 03:10:08,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970961183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:10:08,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:10:08,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 03:10:08,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439942773] [2023-12-21 03:10:08,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:10:08,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 03:10:08,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:10:08,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 03:10:08,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 03:10:08,332 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:08,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:10:08,361 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2023-12-21 03:10:08,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 03:10:08,363 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-12-21 03:10:08,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:10:08,368 INFO L225 Difference]: With dead ends: 19 [2023-12-21 03:10:08,368 INFO L226 Difference]: Without dead ends: 9 [2023-12-21 03:10:08,370 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 [2023-12-21 03:10:08,373 INFO L413 NwaCegarLoop]: 11 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, 11 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 [2023-12-21 03:10:08,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 03:10:08,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-21 03:10:08,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-12-21 03:10:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:08,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-12-21 03:10:08,398 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2023-12-21 03:10:08,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:10:08,399 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-12-21 03:10:08,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:08,399 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-12-21 03:10:08,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-21 03:10:08,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:10:08,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-21 03:10:08,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 03:10:08,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:10:08,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:10:08,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2026470929, now seen corresponding path program 1 times [2023-12-21 03:10:08,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:10:08,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405260869] [2023-12-21 03:10:08,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:10:08,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:10:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:10:08,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:08,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:10:08,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405260869] [2023-12-21 03:10:08,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405260869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:10:08,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:10:08,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 03:10:08,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331654393] [2023-12-21 03:10:08,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:10:08,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 03:10:08,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:10:08,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 03:10:08,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 03:10:08,485 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:08,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:10:08,501 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2023-12-21 03:10:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 03:10:08,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-12-21 03:10:08,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:10:08,502 INFO L225 Difference]: With dead ends: 18 [2023-12-21 03:10:08,502 INFO L226 Difference]: Without dead ends: 12 [2023-12-21 03:10:08,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 03:10:08,503 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 03:10:08,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 03:10:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-21 03:10:08,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-12-21 03:10:08,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 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) [2023-12-21 03:10:08,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-12-21 03:10:08,513 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2023-12-21 03:10:08,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:10:08,513 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-12-21 03:10:08,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:08,514 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-12-21 03:10:08,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 03:10:08,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:10:08,515 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:10:08,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 03:10:08,515 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:10:08,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:10:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1758149216, now seen corresponding path program 1 times [2023-12-21 03:10:08,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:10:08,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666293283] [2023-12-21 03:10:08,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:10:08,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:10:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:10:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:08,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:10:08,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666293283] [2023-12-21 03:10:08,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666293283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:10:08,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:10:08,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 03:10:08,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380988309] [2023-12-21 03:10:08,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:10:08,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 03:10:08,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:10:08,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 03:10:08,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 03:10:08,693 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:08,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:10:08,715 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2023-12-21 03:10:08,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 03:10:08,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2023-12-21 03:10:08,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:10:08,716 INFO L225 Difference]: With dead ends: 17 [2023-12-21 03:10:08,716 INFO L226 Difference]: Without dead ends: 15 [2023-12-21 03:10:08,716 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 [2023-12-21 03:10:08,717 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 03:10:08,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 03:10:08,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-21 03:10:08,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2023-12-21 03:10:08,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:08,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-12-21 03:10:08,720 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2023-12-21 03:10:08,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:10:08,720 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-12-21 03:10:08,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:08,721 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-12-21 03:10:08,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-21 03:10:08,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:10:08,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:10:08,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 03:10:08,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:10:08,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:10:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash -98083423, now seen corresponding path program 1 times [2023-12-21 03:10:08,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:10:08,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909049833] [2023-12-21 03:10:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:10:08,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:10:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:10:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:08,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:10:08,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909049833] [2023-12-21 03:10:08,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909049833] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:10:08,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958161072] [2023-12-21 03:10:08,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:10:08,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:10:08,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:10:08,856 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) [2023-12-21 03:10:08,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 03:10:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:10:08,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 03:10:08,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:10:09,013 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 [2023-12-21 03:10:09,018 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 [2023-12-21 03:10:09,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:09,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:10:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:09,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958161072] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:10:09,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:10:09,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 5 [2023-12-21 03:10:09,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879385940] [2023-12-21 03:10:09,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:10:09,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 03:10:09,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:10:09,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 03:10:09,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 03:10:09,107 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:09,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:10:09,127 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2023-12-21 03:10:09,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 03:10:09,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-21 03:10:09,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:10:09,129 INFO L225 Difference]: With dead ends: 26 [2023-12-21 03:10:09,129 INFO L226 Difference]: Without dead ends: 17 [2023-12-21 03:10:09,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 03:10:09,131 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 03:10:09,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 03:10:09,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-21 03:10:09,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2023-12-21 03:10:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-12-21 03:10:09,140 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2023-12-21 03:10:09,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:10:09,140 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-12-21 03:10:09,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-12-21 03:10:09,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-21 03:10:09,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:10:09,141 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-21 03:10:09,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 03:10:09,347 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 [2023-12-21 03:10:09,347 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:10:09,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:10:09,348 INFO L85 PathProgramCache]: Analyzing trace with hash 821181778, now seen corresponding path program 2 times [2023-12-21 03:10:09,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:10:09,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080119557] [2023-12-21 03:10:09,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:10:09,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:10:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:10:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:09,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:10:09,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080119557] [2023-12-21 03:10:09,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080119557] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:10:09,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915433448] [2023-12-21 03:10:09,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 03:10:09,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:10:09,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:10:09,790 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) [2023-12-21 03:10:09,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 03:10:09,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 03:10:09,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:10:09,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 03:10:09,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:10:09,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-12-21 03:10:09,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-12-21 03:10:09,913 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-21 03:10:09,913 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 11 treesize of output 11 [2023-12-21 03:10:09,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-12-21 03:10:09,936 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 [2023-12-21 03:10:09,942 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 20 treesize of output 15 [2023-12-21 03:10:09,996 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 15 [2023-12-21 03:10:10,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-12-21 03:10:10,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:10,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:10:10,043 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_99 (Array Int Int))) (= (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_99) |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset|) 1)) is different from false [2023-12-21 03:10:10,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:10,084 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2023-12-21 03:10:10,088 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 30 treesize of output 22 [2023-12-21 03:10:10,090 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 5 treesize of output 3 [2023-12-21 03:10:10,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-12-21 03:10:10,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915433448] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:10:10,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:10:10,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-12-21 03:10:10,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369470243] [2023-12-21 03:10:10,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:10:10,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 03:10:10,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:10:10,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 03:10:10,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=124, Unknown=1, NotChecked=22, Total=182 [2023-12-21 03:10:10,104 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:10,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:10:10,308 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2023-12-21 03:10:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 03:10:10,310 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 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 15 [2023-12-21 03:10:10,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:10:10,314 INFO L225 Difference]: With dead ends: 23 [2023-12-21 03:10:10,315 INFO L226 Difference]: Without dead ends: 21 [2023-12-21 03:10:10,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=269, Unknown=1, NotChecked=36, Total=420 [2023-12-21 03:10:10,316 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 46 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 03:10:10,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 39 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2023-12-21 03:10:10,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-21 03:10:10,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2023-12-21 03:10:10,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 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) [2023-12-21 03:10:10,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2023-12-21 03:10:10,322 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2023-12-21 03:10:10,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:10:10,322 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2023-12-21 03:10:10,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:10,322 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2023-12-21 03:10:10,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 03:10:10,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:10:10,323 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-12-21 03:10:10,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 03:10:10,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:10:10,544 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:10:10,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:10:10,548 INFO L85 PathProgramCache]: Analyzing trace with hash -302572177, now seen corresponding path program 3 times [2023-12-21 03:10:10,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:10:10,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161507833] [2023-12-21 03:10:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:10:10,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:10:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:10:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:10,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:10:10,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161507833] [2023-12-21 03:10:10,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161507833] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:10:10,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711226181] [2023-12-21 03:10:10,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 03:10:10,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:10:10,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:10:10,856 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) [2023-12-21 03:10:10,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 03:10:10,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 03:10:10,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:10:10,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 03:10:10,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:10:10,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-12-21 03:10:10,984 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 [2023-12-21 03:10:10,988 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 [2023-12-21 03:10:11,035 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-21 03:10:11,035 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 11 treesize of output 11 [2023-12-21 03:10:11,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-12-21 03:10:11,058 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 21 treesize of output 23 [2023-12-21 03:10:11,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-12-21 03:10:11,068 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 20 treesize of output 15 [2023-12-21 03:10:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:11,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:10:11,229 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:11,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2023-12-21 03:10:11,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:11,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2023-12-21 03:10:11,241 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) (.cse1 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (and (forall ((v_arrayElimArr_4 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_4) |c_ULTIMATE.start_main_~p~0#1.base|) .cse0) 0) (not (= (select v_arrayElimArr_4 .cse1) |c_ULTIMATE.start_main_~p~0#1.offset|)))) (forall ((v_arrayElimArr_3 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_3) |c_ULTIMATE.start_main_~p~0#1.base|) .cse0) 0) (not (= (select v_arrayElimArr_3 .cse1) |c_ULTIMATE.start_main_~p~0#1.base|)))))) is different from false [2023-12-21 03:10:11,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:11,315 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-12-21 03:10:11,318 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 36 treesize of output 24 [2023-12-21 03:10:11,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:11,324 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 18 treesize of output 20 [2023-12-21 03:10:11,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:11,350 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-12-21 03:10:11,354 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 36 treesize of output 24 [2023-12-21 03:10:11,360 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:11,360 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 18 treesize of output 20 [2023-12-21 03:10:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-12-21 03:10:11,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711226181] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:10:11,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:10:11,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-12-21 03:10:11,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765780815] [2023-12-21 03:10:11,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:10:11,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 03:10:11,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:10:11,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 03:10:11,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=145, Unknown=1, NotChecked=24, Total=210 [2023-12-21 03:10:11,418 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:11,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:10:11,509 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2023-12-21 03:10:11,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 03:10:11,509 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-21 03:10:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:10:11,510 INFO L225 Difference]: With dead ends: 35 [2023-12-21 03:10:11,510 INFO L226 Difference]: Without dead ends: 23 [2023-12-21 03:10:11,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=166, Unknown=1, NotChecked=26, Total=240 [2023-12-21 03:10:11,510 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 03:10:11,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 86 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 20 Unchecked, 0.1s Time] [2023-12-21 03:10:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-21 03:10:11,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2023-12-21 03:10:11,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 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) [2023-12-21 03:10:11,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2023-12-21 03:10:11,514 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 18 [2023-12-21 03:10:11,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:10:11,514 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-12-21 03:10:11,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:11,514 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2023-12-21 03:10:11,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 03:10:11,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:10:11,514 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2023-12-21 03:10:11,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 03:10:11,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:10:11,720 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:10:11,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:10:11,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2045922208, now seen corresponding path program 4 times [2023-12-21 03:10:11,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:10:11,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476227606] [2023-12-21 03:10:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:10:11,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:10:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:10:12,288 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:12,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:10:12,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476227606] [2023-12-21 03:10:12,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476227606] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:10:12,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212300798] [2023-12-21 03:10:12,289 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 03:10:12,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:10:12,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:10:12,305 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) [2023-12-21 03:10:12,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 03:10:12,375 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 03:10:12,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:10:12,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-21 03:10:12,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:10:12,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-12-21 03:10:12,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-12-21 03:10:12,411 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-21 03:10:12,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2023-12-21 03:10:12,443 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 [2023-12-21 03:10:12,448 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 20 treesize of output 15 [2023-12-21 03:10:12,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-12-21 03:10:12,501 INFO L349 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-12-21 03:10:12,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-12-21 03:10:12,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-12-21 03:10:12,544 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 21 treesize of output 23 [2023-12-21 03:10:12,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-12-21 03:10:12,554 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 52 treesize of output 35 [2023-12-21 03:10:12,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2023-12-21 03:10:12,819 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-21 03:10:12,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33 [2023-12-21 03:10:12,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 03:10:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:12,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:10:12,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:12,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2023-12-21 03:10:12,972 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:12,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2023-12-21 03:10:13,144 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:13,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 56 [2023-12-21 03:10:13,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 90 [2023-12-21 03:10:13,157 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:13,157 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 76 [2023-12-21 03:10:13,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 114 [2023-12-21 03:10:13,171 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:13,172 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 54 treesize of output 52 [2023-12-21 03:10:13,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:13,181 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 28 treesize of output 30 [2023-12-21 03:10:13,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:13,627 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 45 [2023-12-21 03:10:13,630 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:13,631 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 127 treesize of output 115 [2023-12-21 03:10:13,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:13,640 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 21 treesize of output 25 [2023-12-21 03:10:13,647 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:13,648 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 31 treesize of output 33 [2023-12-21 03:10:13,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:13,685 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2023-12-21 03:10:13,688 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 122 treesize of output 110 [2023-12-21 03:10:13,693 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 15 treesize of output 13 [2023-12-21 03:10:13,698 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:13,699 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 31 treesize of output 33 [2023-12-21 03:10:13,785 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 15 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:13,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212300798] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:10:13,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:10:13,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2023-12-21 03:10:13,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35260628] [2023-12-21 03:10:13,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:10:13,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 03:10:13,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:10:13,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 03:10:13,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=790, Unknown=9, NotChecked=0, Total=930 [2023-12-21 03:10:13,790 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:14,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:10:14,348 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2023-12-21 03:10:14,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 03:10:14,349 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2023-12-21 03:10:14,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:10:14,350 INFO L225 Difference]: With dead ends: 29 [2023-12-21 03:10:14,350 INFO L226 Difference]: Without dead ends: 27 [2023-12-21 03:10:14,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=322, Invalid=1305, Unknown=13, NotChecked=0, Total=1640 [2023-12-21 03:10:14,351 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 65 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 8 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 03:10:14,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 99 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 156 Invalid, 18 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 03:10:14,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-21 03:10:14,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2023-12-21 03:10:14,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:14,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2023-12-21 03:10:14,354 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2023-12-21 03:10:14,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:10:14,354 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-12-21 03:10:14,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:14,354 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2023-12-21 03:10:14,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 03:10:14,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:10:14,355 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-12-21 03:10:14,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 03:10:14,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:10:14,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:10:14,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:10:14,556 INFO L85 PathProgramCache]: Analyzing trace with hash -182803551, now seen corresponding path program 5 times [2023-12-21 03:10:14,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:10:14,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406857595] [2023-12-21 03:10:14,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:10:14,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:10:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:10:15,205 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:15,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:10:15,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406857595] [2023-12-21 03:10:15,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406857595] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:10:15,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060724622] [2023-12-21 03:10:15,205 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 03:10:15,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:10:15,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:10:15,206 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) [2023-12-21 03:10:15,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 03:10:15,295 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-21 03:10:15,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:10:15,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-21 03:10:15,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:10:15,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-12-21 03:10:15,314 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 [2023-12-21 03:10:15,317 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 [2023-12-21 03:10:15,339 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-21 03:10:15,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2023-12-21 03:10:15,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-12-21 03:10:15,378 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 21 treesize of output 23 [2023-12-21 03:10:15,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-12-21 03:10:15,387 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 20 treesize of output 15 [2023-12-21 03:10:15,430 INFO L349 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-12-21 03:10:15,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-12-21 03:10:15,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-12-21 03:10:15,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 41 [2023-12-21 03:10:15,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-12-21 03:10:15,492 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-12-21 03:10:15,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 50 [2023-12-21 03:10:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:15,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:10:15,838 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:15,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2023-12-21 03:10:15,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:15,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 39 [2023-12-21 03:10:15,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:15,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 49 [2023-12-21 03:10:15,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:15,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 39 [2023-12-21 03:10:15,862 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) (.cse0 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (and (forall ((v_arrayElimArr_17 (Array Int Int)) (v_arrayElimArr_16 (Array Int Int))) (or (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_17 .cse0))) (= (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_16))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~p~0#1.base|) .cse2))) (+ 4 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_17) |c_ULTIMATE.start_main_~p~0#1.base|) .cse2))) 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| (select v_arrayElimArr_16 .cse0))))) (forall ((v_arrayElimArr_19 (Array Int Int)) (v_arrayElimArr_18 (Array Int Int))) (or (not (= (select v_arrayElimArr_19 .cse0) |c_ULTIMATE.start_main_~p~0#1.offset|)) (= (let ((.cse3 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_19))) (select (select .cse3 (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_18) |c_ULTIMATE.start_main_~p~0#1.base|) .cse2)) (+ (select (select .cse3 |c_ULTIMATE.start_main_~p~0#1.base|) .cse2) 4))) 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| (select v_arrayElimArr_18 .cse0))))))) is different from false [2023-12-21 03:10:15,964 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:15,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 53 [2023-12-21 03:10:15,969 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:15,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 48 [2023-12-21 03:10:15,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:15,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 53 [2023-12-21 03:10:15,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:15,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 48 [2023-12-21 03:10:16,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:16,266 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 76 [2023-12-21 03:10:16,271 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:16,271 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2023-12-21 03:10:16,273 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:16,275 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 44 treesize of output 38 [2023-12-21 03:10:16,278 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:16,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:10:16,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 178 [2023-12-21 03:10:16,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:16,287 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 99 treesize of output 85 [2023-12-21 03:10:16,298 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:16,298 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 66 treesize of output 56 [2023-12-21 03:10:16,306 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 21 [2023-12-21 03:10:16,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:16,406 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 66 [2023-12-21 03:10:16,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:16,412 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 56 [2023-12-21 03:10:16,414 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:16,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:10:16,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:10:16,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 396 treesize of output 346 [2023-12-21 03:10:16,424 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:16,426 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 90 treesize of output 84 [2023-12-21 03:10:16,430 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 86 treesize of output 72 [2023-12-21 03:10:16,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:16,438 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 43 treesize of output 39 [2023-12-21 03:10:16,442 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 75 treesize of output 63 [2023-12-21 03:10:16,448 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:16,448 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 48 [2023-12-21 03:10:16,690 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-12-21 03:10:16,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060724622] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:10:16,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:10:16,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 28 [2023-12-21 03:10:16,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681886954] [2023-12-21 03:10:16,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:10:16,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 03:10:16,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:10:16,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 03:10:16,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=662, Unknown=3, NotChecked=52, Total=812 [2023-12-21 03:10:16,692 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 28 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:17,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:10:17,205 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2023-12-21 03:10:17,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 03:10:17,206 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 28 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-21 03:10:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:10:17,206 INFO L225 Difference]: With dead ends: 44 [2023-12-21 03:10:17,206 INFO L226 Difference]: Without dead ends: 29 [2023-12-21 03:10:17,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=172, Invalid=1089, Unknown=3, NotChecked=68, Total=1332 [2023-12-21 03:10:17,207 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 03:10:17,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 153 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 230 Invalid, 0 Unknown, 26 Unchecked, 0.2s Time] [2023-12-21 03:10:17,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-21 03:10:17,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2023-12-21 03:10:17,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:17,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2023-12-21 03:10:17,211 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2023-12-21 03:10:17,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:10:17,212 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2023-12-21 03:10:17,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 28 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:17,212 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2023-12-21 03:10:17,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 03:10:17,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:10:17,212 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2023-12-21 03:10:17,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 03:10:17,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:10:17,418 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:10:17,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:10:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1478918610, now seen corresponding path program 6 times [2023-12-21 03:10:17,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:10:17,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760724805] [2023-12-21 03:10:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:10:17,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:10:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:10:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:18,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:10:18,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760724805] [2023-12-21 03:10:18,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760724805] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:10:18,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357081187] [2023-12-21 03:10:18,301 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 03:10:18,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:10:18,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:10:18,302 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) [2023-12-21 03:10:18,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 03:10:18,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 03:10:18,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:10:18,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 83 conjunts are in the unsatisfiable core [2023-12-21 03:10:18,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:10:18,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-12-21 03:10:18,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-12-21 03:10:18,458 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-21 03:10:18,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2023-12-21 03:10:18,505 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 20 treesize of output 15 [2023-12-21 03:10:18,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-12-21 03:10:18,513 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 [2023-12-21 03:10:18,569 INFO L349 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2023-12-21 03:10:18,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2023-12-21 03:10:18,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-12-21 03:10:18,641 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 21 treesize of output 23 [2023-12-21 03:10:18,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-12-21 03:10:18,650 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 65 treesize of output 42 [2023-12-21 03:10:18,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2023-12-21 03:10:18,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:10:18,742 INFO L349 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2023-12-21 03:10:18,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2023-12-21 03:10:18,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-12-21 03:10:18,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:10:18,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 41 [2023-12-21 03:10:18,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-12-21 03:10:18,827 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-12-21 03:10:18,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 68 [2023-12-21 03:10:18,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2023-12-21 03:10:19,154 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-12-21 03:10:19,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 121 treesize of output 55 [2023-12-21 03:10:19,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-21 03:10:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:19,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:10:19,275 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:19,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 88 [2023-12-21 03:10:19,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:19,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 73 [2023-12-21 03:10:19,294 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_472 (Array Int Int)) (v_arrayElimArr_31 (Array Int Int)) (v_arrayElimArr_30 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (or (not (= (select v_arrayElimArr_31 .cse0) |c_ULTIMATE.start_main_~p~0#1.offset|)) (= (let ((.cse4 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_31)) (.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_30)) (.cse5 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~p~0#1.base|) .cse5)) (.cse3 (+ (select (select .cse4 |c_ULTIMATE.start_main_~p~0#1.base|) .cse5) 4))) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_472) (select (select .cse1 .cse2) .cse3)) (select (select .cse4 .cse2) .cse3)))) 1) (not (= |c_ULTIMATE.start_main_~p~0#1.base| (select v_arrayElimArr_30 .cse0)))))) is different from false [2023-12-21 03:10:19,372 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:19,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 117 [2023-12-21 03:10:19,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:19,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 102 [2023-12-21 03:10:19,395 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_33 (Array Int Int)) (v_arrayElimArr_32 (Array Int Int)) (v_ArrVal_472 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_25| Int) (v_ArrVal_464 (Array Int Int)) (v_arrayElimArr_31 (Array Int Int)) (v_arrayElimArr_30 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_31 4)) (.cse1 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (or (not (= |c_ULTIMATE.start_main_~t~0#1.offset| .cse0)) (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_33 .cse1))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_25|) 0)) (not (= (select v_arrayElimArr_30 4) |c_ULTIMATE.start_main_~t~0#1.base|)) (= (let ((.cse5 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_33) |v_ULTIMATE.start_main_~t~0#1.base_25| v_arrayElimArr_31)) (.cse2 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_32) |v_ULTIMATE.start_main_~t~0#1.base_25| v_arrayElimArr_30)) (.cse6 (+ .cse0 4))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~t~0#1.base|) .cse6)) (.cse4 (+ 4 (select (select .cse5 |c_ULTIMATE.start_main_~t~0#1.base|) .cse6)))) (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_464) |v_ULTIMATE.start_main_~t~0#1.base_25| v_ArrVal_472) (select (select .cse2 .cse3) .cse4)) (select (select .cse5 .cse3) .cse4)))) 1) (not (= (select v_arrayElimArr_32 .cse1) |c_ULTIMATE.start_main_~p~0#1.base|))))) is different from false [2023-12-21 03:10:19,417 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_33 (Array Int Int)) (v_arrayElimArr_32 (Array Int Int)) (v_ArrVal_472 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_25| Int) (v_ArrVal_464 (Array Int Int)) (v_arrayElimArr_31 (Array Int Int)) (v_arrayElimArr_30 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_30 4))) (or (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~t~0#1.base_25|) 0)) (not (= (select |c_#valid| .cse0) 0)) (not (= (select v_arrayElimArr_31 4) 0)) (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_33 4))) (not (= (select v_arrayElimArr_32 4) |c_ULTIMATE.start_main_~p~0#1.base|)) (= (let ((.cse4 (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_arrayElimArr_33) |v_ULTIMATE.start_main_~t~0#1.base_25| v_arrayElimArr_31)) (.cse1 (store (store |c_#memory_$Pointer$#1.base| .cse0 v_arrayElimArr_32) |v_ULTIMATE.start_main_~t~0#1.base_25| v_arrayElimArr_30))) (let ((.cse2 (select (select .cse1 .cse0) 4)) (.cse3 (+ (select (select .cse4 .cse0) 4) 4))) (select (select (store (store |c_#memory_int#1| .cse0 v_ArrVal_464) |v_ULTIMATE.start_main_~t~0#1.base_25| v_ArrVal_472) (select (select .cse1 .cse2) .cse3)) (select (select .cse4 .cse2) .cse3)))) 1)))) is different from false [2023-12-21 03:10:19,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:19,449 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 143 [2023-12-21 03:10:19,454 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:19,454 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 113 [2023-12-21 03:10:19,457 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:19,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:10:19,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:10:19,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 360 treesize of output 332 [2023-12-21 03:10:19,466 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:19,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:10:19,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1456 treesize of output 1370 [2023-12-21 03:10:19,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:19,484 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 173 treesize of output 155 [2023-12-21 03:10:19,492 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:19,493 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 136 treesize of output 132 [2023-12-21 03:10:19,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:19,503 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 124 treesize of output 114 [2023-12-21 03:10:19,513 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:19,513 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 89 [2023-12-21 03:10:32,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:32,609 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 67 [2023-12-21 03:10:32,614 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:32,614 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:32,615 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:32,618 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 130 treesize of output 122 [2023-12-21 03:10:32,628 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 100 treesize of output 92 [2023-12-21 03:10:32,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:32,653 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 56 treesize of output 60 [2023-12-21 03:10:32,678 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:32,679 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 95 treesize of output 97 [2023-12-21 03:10:32,858 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:32,858 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 51 [2023-12-21 03:10:32,862 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:32,863 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:32,866 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 247 treesize of output 235 [2023-12-21 03:10:32,876 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 100 treesize of output 92 [2023-12-21 03:10:32,906 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:32,906 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 47 treesize of output 51 [2023-12-21 03:10:32,915 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 50 treesize of output 46 [2023-12-21 03:10:33,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:33,096 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2023-12-21 03:10:33,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 486 treesize of output 466 [2023-12-21 03:10:33,114 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 45 treesize of output 41 [2023-12-21 03:10:33,123 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 41 treesize of output 39 [2023-12-21 03:10:33,131 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 46 [2023-12-21 03:10:33,328 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:33,328 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 51 [2023-12-21 03:10:33,334 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:33,335 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:33,339 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 979 treesize of output 943 [2023-12-21 03:10:33,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:33,363 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 51 treesize of output 53 [2023-12-21 03:10:33,370 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 41 treesize of output 39 [2023-12-21 03:10:33,377 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 46 [2023-12-21 03:10:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 21 refuted. 1 times theorem prover too weak. 0 trivial. 11 not checked. [2023-12-21 03:10:38,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357081187] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:10:38,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:10:38,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 37 [2023-12-21 03:10:38,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553489078] [2023-12-21 03:10:38,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:10:38,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-21 03:10:38,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:10:38,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-21 03:10:38,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=995, Unknown=7, NotChecked=198, Total=1332 [2023-12-21 03:10:38,922 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 37 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:41,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:10:41,705 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2023-12-21 03:10:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 03:10:41,706 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 37 states have internal predecessors, (69), 0 states have call successors, (0), 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 27 [2023-12-21 03:10:41,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:10:41,708 INFO L225 Difference]: With dead ends: 35 [2023-12-21 03:10:41,709 INFO L226 Difference]: Without dead ends: 33 [2023-12-21 03:10:41,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=418, Invalid=1843, Unknown=7, NotChecked=282, Total=2550 [2023-12-21 03:10:41,712 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 67 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 03:10:41,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 122 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 225 Invalid, 0 Unknown, 87 Unchecked, 0.9s Time] [2023-12-21 03:10:41,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-21 03:10:41,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2023-12-21 03:10:41,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:41,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2023-12-21 03:10:41,720 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2023-12-21 03:10:41,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:10:41,720 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2023-12-21 03:10:41,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 37 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:10:41,721 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2023-12-21 03:10:41,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 03:10:41,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:10:41,721 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1] [2023-12-21 03:10:41,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 03:10:41,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:10:41,927 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:10:41,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:10:41,927 INFO L85 PathProgramCache]: Analyzing trace with hash 694585583, now seen corresponding path program 7 times [2023-12-21 03:10:41,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:10:41,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420118793] [2023-12-21 03:10:41,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:10:41,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:10:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:10:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:44,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:10:44,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420118793] [2023-12-21 03:10:44,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420118793] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:10:44,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673593295] [2023-12-21 03:10:44,777 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 03:10:44,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:10:44,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:10:44,779 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) [2023-12-21 03:10:44,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 03:10:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:10:44,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-21 03:10:44,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:10:44,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-12-21 03:10:44,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 03:10:45,005 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 [2023-12-21 03:10:45,092 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-21 03:10:45,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2023-12-21 03:10:45,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-12-21 03:10:45,285 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 20 treesize of output 15 [2023-12-21 03:10:45,304 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 21 treesize of output 23 [2023-12-21 03:10:45,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-12-21 03:10:45,595 INFO L349 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2023-12-21 03:10:45,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2023-12-21 03:10:45,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-12-21 03:10:45,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 41 [2023-12-21 03:10:45,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-12-21 03:10:45,865 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-12-21 03:10:45,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 57 [2023-12-21 03:10:46,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:10:46,145 INFO L349 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2023-12-21 03:10:46,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2023-12-21 03:10:46,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-12-21 03:10:46,407 INFO L349 Elim1Store]: treesize reduction 64, result has 14.7 percent of original size [2023-12-21 03:10:46,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 134 treesize of output 83 [2023-12-21 03:10:46,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:10:46,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:10:46,442 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 0 case distinctions, treesize of input 55 treesize of output 63 [2023-12-21 03:10:46,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-12-21 03:10:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:10:47,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:10:48,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:48,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2023-12-21 03:10:48,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:48,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 75 [2023-12-21 03:10:48,566 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:48,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 90 [2023-12-21 03:10:48,578 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:48,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 75 [2023-12-21 03:10:48,609 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) (.cse5 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (and (forall ((v_arrayElimArr_44 (Array Int Int)) (v_arrayElimArr_43 (Array Int Int))) (or (= (let ((.cse0 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_44)) (.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_43))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~p~0#1.base|) .cse4)) (.cse3 (+ (select (select .cse0 |c_ULTIMATE.start_main_~p~0#1.base|) .cse4) 4))) (select (select .cse0 (select (select .cse1 .cse2) .cse3)) (+ 4 (select (select .cse0 .cse2) .cse3))))) 0) (not (= (select v_arrayElimArr_43 .cse5) |c_ULTIMATE.start_main_~p~0#1.base|)) (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_44 .cse5))))) (forall ((v_arrayElimArr_46 (Array Int Int)) (v_arrayElimArr_45 (Array Int Int))) (or (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_46 .cse5))) (= (let ((.cse9 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_46)) (.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_45))) (let ((.cse7 (select (select .cse6 |c_ULTIMATE.start_main_~p~0#1.base|) .cse4)) (.cse8 (+ (select (select .cse9 |c_ULTIMATE.start_main_~p~0#1.base|) .cse4) 4))) (select (select .cse6 (select (select .cse6 .cse7) .cse8)) (+ 4 (select (select .cse9 .cse7) .cse8))))) 0) (not (= |c_ULTIMATE.start_main_~p~0#1.base| (select v_arrayElimArr_45 .cse5))))))) is different from false [2023-12-21 03:10:48,942 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:48,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 116 [2023-12-21 03:10:48,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:48,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 96 [2023-12-21 03:10:49,038 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:49,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 111 [2023-12-21 03:10:49,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:49,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 96 [2023-12-21 03:10:49,795 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:49,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 151 [2023-12-21 03:10:49,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:49,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 131 [2023-12-21 03:10:49,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:49,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 146 [2023-12-21 03:10:49,907 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:49,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 131 [2023-12-21 03:10:50,935 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:50,935 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 206 treesize of output 187 [2023-12-21 03:10:50,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:50,949 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 147 [2023-12-21 03:10:50,953 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:50,954 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:50,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:10:50,957 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:50,960 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 73 [2023-12-21 03:10:50,971 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:50,972 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:50,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:10:50,986 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:51,020 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:51,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 9150 treesize of output 8844 [2023-12-21 03:10:51,104 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:51,104 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 600 treesize of output 508 [2023-12-21 03:10:51,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:51,136 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 471 treesize of output 431 [2023-12-21 03:10:51,171 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:51,172 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 460 treesize of output 364 [2023-12-21 03:10:51,187 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 37 treesize of output 29 [2023-12-21 03:10:52,559 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:52,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 206 treesize of output 177 [2023-12-21 03:10:52,579 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:52,579 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 147 [2023-12-21 03:10:52,585 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:52,585 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:52,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:10:52,590 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:52,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:10:52,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:10:52,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7072 treesize of output 6650 [2023-12-21 03:10:52,644 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:52,645 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:10:52,648 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 974 treesize of output 968 [2023-12-21 03:10:52,678 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 402 treesize of output 372 [2023-12-21 03:10:52,692 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 405 treesize of output 331 [2023-12-21 03:10:52,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:52,716 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 306 treesize of output 300 [2023-12-21 03:10:52,730 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 307 treesize of output 263 [2023-12-21 03:10:52,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:52,761 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 125 treesize of output 123 [2023-12-21 03:10:52,798 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:10:52,798 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 130 treesize of output 120 [2023-12-21 03:10:55,745 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-12-21 03:10:55,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673593295] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:10:55,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:10:55,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 39 [2023-12-21 03:10:55,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23018022] [2023-12-21 03:10:55,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:10:55,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-21 03:10:55,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:10:55,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-21 03:10:55,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1339, Unknown=5, NotChecked=74, Total=1560 [2023-12-21 03:10:55,747 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 40 states, 40 states have (on average 1.975) internal successors, (79), 39 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) [2023-12-21 03:10:59,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:10:59,346 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2023-12-21 03:10:59,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 03:10:59,347 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.975) internal successors, (79), 39 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) Word has length 30 [2023-12-21 03:10:59,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:10:59,347 INFO L225 Difference]: With dead ends: 53 [2023-12-21 03:10:59,347 INFO L226 Difference]: Without dead ends: 35 [2023-12-21 03:10:59,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=277, Invalid=2272, Unknown=5, NotChecked=98, Total=2652 [2023-12-21 03:10:59,349 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 03:10:59,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 231 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 451 Invalid, 0 Unknown, 32 Unchecked, 1.8s Time] [2023-12-21 03:10:59,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-21 03:10:59,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2023-12-21 03:10:59,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 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) [2023-12-21 03:10:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2023-12-21 03:10:59,353 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 30 [2023-12-21 03:10:59,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:10:59,353 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2023-12-21 03:10:59,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.975) internal successors, (79), 39 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) [2023-12-21 03:10:59,353 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2023-12-21 03:10:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 03:10:59,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:10:59,353 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2023-12-21 03:10:59,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 03:10:59,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:10:59,559 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:10:59,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:10:59,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1616560544, now seen corresponding path program 8 times [2023-12-21 03:10:59,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:10:59,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322366704] [2023-12-21 03:10:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:10:59,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:10:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:11:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 13 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:11:02,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:11:02,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322366704] [2023-12-21 03:11:02,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322366704] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:11:02,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006968300] [2023-12-21 03:11:02,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 03:11:02,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:11:02,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:11:02,827 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) [2023-12-21 03:11:02,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 03:11:02,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 03:11:02,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:11:02,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 107 conjunts are in the unsatisfiable core [2023-12-21 03:11:02,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:11:02,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-12-21 03:11:03,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-12-21 03:11:03,129 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-21 03:11:03,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2023-12-21 03:11:03,260 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 [2023-12-21 03:11:03,278 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 20 treesize of output 15 [2023-12-21 03:11:03,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-12-21 03:11:03,500 INFO L349 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2023-12-21 03:11:03,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2023-12-21 03:11:03,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-12-21 03:11:03,699 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 21 treesize of output 23 [2023-12-21 03:11:03,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-12-21 03:11:03,744 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 65 treesize of output 42 [2023-12-21 03:11:03,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2023-12-21 03:11:04,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:11:04,125 INFO L349 Elim1Store]: treesize reduction 90, result has 36.6 percent of original size [2023-12-21 03:11:04,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 69 [2023-12-21 03:11:04,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-12-21 03:11:04,467 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-12-21 03:11:04,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 145 treesize of output 82 [2023-12-21 03:11:04,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2023-12-21 03:11:04,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:11:04,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 41 [2023-12-21 03:11:04,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-12-21 03:11:04,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:11:04,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:11:04,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:11:04,912 INFO L349 Elim1Store]: treesize reduction 16, result has 71.9 percent of original size [2023-12-21 03:11:04,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 56 [2023-12-21 03:11:05,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-12-21 03:11:05,170 INFO L349 Elim1Store]: treesize reduction 64, result has 14.7 percent of original size [2023-12-21 03:11:05,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 198 treesize of output 101 [2023-12-21 03:11:05,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:11:05,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:11:05,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:11:05,188 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 0 case distinctions, treesize of input 55 treesize of output 63 [2023-12-21 03:11:05,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-12-21 03:11:05,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2023-12-21 03:11:06,840 INFO L349 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2023-12-21 03:11:06,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 192 treesize of output 81 [2023-12-21 03:11:06,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-21 03:11:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 13 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:11:06,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:11:07,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:11:07,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 206 treesize of output 180 [2023-12-21 03:11:07,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:11:07,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 145 [2023-12-21 03:11:07,525 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_756 (Array Int Int)) (v_arrayElimArr_62 (Array Int Int)) (v_arrayElimArr_63 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (or (not (= |c_ULTIMATE.start_main_~p~0#1.base| (select v_arrayElimArr_62 .cse0))) (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_63 .cse0))) (= (let ((.cse4 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_63)) (.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_62)) (.cse7 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse5 (select (select .cse1 |c_ULTIMATE.start_main_~p~0#1.base|) .cse7)) (.cse6 (+ (select (select .cse4 |c_ULTIMATE.start_main_~p~0#1.base|) .cse7) 4))) (let ((.cse2 (select (select .cse1 .cse5) .cse6)) (.cse3 (+ 4 (select (select .cse4 .cse5) .cse6)))) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_756) (select (select .cse1 .cse2) .cse3)) (select (select .cse4 .cse2) .cse3))))) 1)))) is different from false [2023-12-21 03:11:07,752 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:11:07,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 251 treesize of output 225 [2023-12-21 03:11:07,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:11:07,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 216 treesize of output 190 [2023-12-21 03:11:07,810 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_65 (Array Int Int)) (v_ArrVal_756 (Array Int Int)) (v_arrayElimArr_62 (Array Int Int)) (v_ArrVal_750 (Array Int Int)) (v_arrayElimArr_64 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_33| Int) (v_arrayElimArr_63 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (or (not (= |c_ULTIMATE.start_main_~t~0#1.offset| (select v_arrayElimArr_63 4))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_33|) 0)) (not (= (select v_arrayElimArr_64 .cse0) |c_ULTIMATE.start_main_~p~0#1.base|)) (= (let ((.cse4 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_65) |v_ULTIMATE.start_main_~t~0#1.base_33| v_arrayElimArr_63)) (.cse1 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_64) |v_ULTIMATE.start_main_~t~0#1.base_33| v_arrayElimArr_62))) (let ((.cse5 (select (select .cse1 |c_ULTIMATE.start_main_~t~0#1.base|) .cse0)) (.cse6 (+ (select (select .cse4 |c_ULTIMATE.start_main_~t~0#1.base|) .cse0) 4))) (let ((.cse2 (select (select .cse1 .cse5) .cse6)) (.cse3 (+ (select (select .cse4 .cse5) .cse6) 4))) (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_750) |v_ULTIMATE.start_main_~t~0#1.base_33| v_ArrVal_756) (select (select .cse1 .cse2) .cse3)) (select (select .cse4 .cse2) .cse3))))) 1) (not (= (select v_arrayElimArr_65 .cse0) |c_ULTIMATE.start_main_~p~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~t~0#1.base| (select v_arrayElimArr_62 4)))))) is different from false [2023-12-21 03:11:07,861 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_65 (Array Int Int)) (v_ArrVal_756 (Array Int Int)) (v_arrayElimArr_62 (Array Int Int)) (v_ArrVal_750 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_33| Int) (v_arrayElimArr_64 (Array Int Int)) (v_arrayElimArr_63 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_62 4))) (or (not (= (select |c_#valid| .cse0) 0)) (not (= (select v_arrayElimArr_65 4) |c_ULTIMATE.start_main_~p~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~p~0#1.base| (select v_arrayElimArr_64 4))) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~t~0#1.base_33|) 0)) (= (let ((.cse4 (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_arrayElimArr_65) |v_ULTIMATE.start_main_~t~0#1.base_33| v_arrayElimArr_63)) (.cse1 (store (store |c_#memory_$Pointer$#1.base| .cse0 v_arrayElimArr_64) |v_ULTIMATE.start_main_~t~0#1.base_33| v_arrayElimArr_62))) (let ((.cse5 (select (select .cse1 .cse0) 4)) (.cse6 (+ (select (select .cse4 .cse0) 4) 4))) (let ((.cse2 (select (select .cse1 .cse5) .cse6)) (.cse3 (+ (select (select .cse4 .cse5) .cse6) 4))) (select (select (store (store |c_#memory_int#1| .cse0 v_ArrVal_750) |v_ULTIMATE.start_main_~t~0#1.base_33| v_ArrVal_756) (select (select .cse1 .cse2) .cse3)) (select (select .cse4 .cse2) .cse3))))) 1) (not (= (select v_arrayElimArr_63 4) 0))))) is different from false [2023-12-21 03:11:07,922 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:11:07,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 326 treesize of output 300 [2023-12-21 03:11:07,937 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:11:07,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 291 treesize of output 265 [2023-12-21 03:11:08,005 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_66 (Array Int Int)) (v_arrayElimArr_65 (Array Int Int)) (v_arrayElimArr_67 (Array Int Int)) (v_ArrVal_756 (Array Int Int)) (v_arrayElimArr_62 (Array Int Int)) (v_ArrVal_750 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_33| Int) (v_arrayElimArr_64 (Array Int Int)) (v_arrayElimArr_63 (Array Int Int)) (v_ArrVal_741 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_62 4)) (.cse7 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (or (not (= (select |c_#valid| .cse0) 0)) (= (let ((.cse4 (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_66) .cse0 v_arrayElimArr_65) |v_ULTIMATE.start_main_~t~0#1.base_33| v_arrayElimArr_63)) (.cse1 (store (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_67) .cse0 v_arrayElimArr_64) |v_ULTIMATE.start_main_~t~0#1.base_33| v_arrayElimArr_62))) (let ((.cse5 (select (select .cse1 .cse0) 4)) (.cse6 (+ (select (select .cse4 .cse0) 4) 4))) (let ((.cse2 (select (select .cse1 .cse5) .cse6)) (.cse3 (+ (select (select .cse4 .cse5) .cse6) 4))) (select (select (store (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_741) .cse0 v_ArrVal_750) |v_ULTIMATE.start_main_~t~0#1.base_33| v_ArrVal_756) (select (select .cse1 .cse2) .cse3)) (select (select .cse4 .cse2) .cse3))))) 1) (not (= |c_ULTIMATE.start_main_~t~0#1.offset| (select v_arrayElimArr_65 4))) (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_66 .cse7))) (not (= |c_ULTIMATE.start_main_~t~0#1.base| (select v_arrayElimArr_64 4))) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~t~0#1.base_33|) 0)) (not (= (select v_arrayElimArr_67 .cse7) |c_ULTIMATE.start_main_~p~0#1.base|)) (not (= (select v_arrayElimArr_63 4) 0))))) is different from false [2023-12-21 03:11:08,080 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_66 (Array Int Int)) (v_arrayElimArr_65 (Array Int Int)) (v_arrayElimArr_67 (Array Int Int)) (v_ArrVal_756 (Array Int Int)) (v_arrayElimArr_62 (Array Int Int)) (v_ArrVal_750 (Array Int Int)) (v_arrayElimArr_64 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_33| Int) (v_arrayElimArr_63 (Array Int Int)) (v_ArrVal_741 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_64 4))) (let ((.cse0 (store |c_#valid| .cse2 1)) (.cse1 (select v_arrayElimArr_62 4))) (or (not (= (select v_arrayElimArr_67 4) |c_ULTIMATE.start_main_~p~0#1.base|)) (not (= (select .cse0 .cse1) 0)) (not (= (select |c_#valid| .cse2) 0)) (= (let ((.cse6 (store (store (store |c_#memory_$Pointer$#1.offset| .cse2 v_arrayElimArr_66) .cse1 v_arrayElimArr_65) |v_ULTIMATE.start_main_~t~0#1.base_33| v_arrayElimArr_63)) (.cse3 (store (store (store |c_#memory_$Pointer$#1.base| .cse2 v_arrayElimArr_67) .cse1 v_arrayElimArr_64) |v_ULTIMATE.start_main_~t~0#1.base_33| v_arrayElimArr_62))) (let ((.cse7 (select (select .cse3 .cse1) 4)) (.cse8 (+ (select (select .cse6 .cse1) 4) 4))) (let ((.cse4 (select (select .cse3 .cse7) .cse8)) (.cse5 (+ (select (select .cse6 .cse7) .cse8) 4))) (select (select (store (store (store |c_#memory_int#1| .cse2 v_ArrVal_741) .cse1 v_ArrVal_750) |v_ULTIMATE.start_main_~t~0#1.base_33| v_ArrVal_756) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5))))) 1) (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_66 4))) (not (= (select (store .cse0 .cse1 1) |v_ULTIMATE.start_main_~t~0#1.base_33|) 0)) (not (= (select v_arrayElimArr_65 4) 0)) (not (= (select v_arrayElimArr_63 4) 0)))))) is different from false [2023-12-21 03:11:08,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:11:08,183 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 429 treesize of output 370 [2023-12-21 03:11:08,198 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:11:08,199 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 359 treesize of output 300 [2023-12-21 03:11:08,204 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:11:08,205 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:11:08,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:11:08,208 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:11:08,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:11:08,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:11:08,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3040 treesize of output 2930 [2023-12-21 03:11:08,251 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:11:08,252 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:11:08,253 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 03:11:08,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 03:11:08,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61156 treesize of output 59870 [2023-12-21 03:11:08,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:11:08,415 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 2765 treesize of output 2425 [2023-12-21 03:11:08,464 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:11:08,465 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 2409 treesize of output 2059 [2023-12-21 03:11:08,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:11:08,520 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 1877 treesize of output 1753 [2023-12-21 03:11:08,597 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:11:08,598 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 1902 treesize of output 1766 [2023-12-21 03:11:08,667 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:11:08,667 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 1758 treesize of output 1572 [2023-12-21 03:11:08,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 03:11:08,743 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 178 [2023-12-21 03:21:34,919 WARN L293 SmtUtils]: Spent 24.77s on a formula simplification. DAG size of input: 6980 DAG size of output: 12297 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-21 03:24:27,721 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 03:24:27,737 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 03:24:27,742 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 [2023-12-21 03:24:27,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 03:24:27,943 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,SelfDestructingSolverStorable10 [2023-12-21 03:24:27,943 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 34 with TraceHistMax 6,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-964-2-17-1 term,while PolyPacSimplificationTermWalker was simplifying 8 xjuncts wrt. a ∧-970-2-17-1 context. [2023-12-21 03:24:27,947 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2023-12-21 03:24:27,951 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 03:24:27,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 03:24:27 BoogieIcfgContainer [2023-12-21 03:24:27,953 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 03:24:27,954 INFO L158 Benchmark]: Toolchain (without parser) took 860583.06ms. Allocated memory was 380.6MB in the beginning and 723.5MB in the end (delta: 342.9MB). Free memory was 328.1MB in the beginning and 678.2MB in the end (delta: -350.1MB). Peak memory consumption was 429.0MB. Max. memory is 8.0GB. [2023-12-21 03:24:27,956 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 219.2MB. Free memory was 170.6MB in the beginning and 170.4MB in the end (delta: 136.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 03:24:27,956 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.76ms. Allocated memory is still 380.6MB. Free memory was 328.1MB in the beginning and 310.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-21 03:24:27,956 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.83ms. Allocated memory is still 380.6MB. Free memory was 310.8MB in the beginning and 309.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 03:24:27,956 INFO L158 Benchmark]: Boogie Preprocessor took 30.61ms. Allocated memory is still 380.6MB. Free memory was 309.1MB in the beginning and 307.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 03:24:27,957 INFO L158 Benchmark]: RCFGBuilder took 319.20ms. Allocated memory is still 380.6MB. Free memory was 307.1MB in the beginning and 294.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 03:24:27,957 INFO L158 Benchmark]: TraceAbstraction took 859854.97ms. Allocated memory was 380.6MB in the beginning and 723.5MB in the end (delta: 342.9MB). Free memory was 293.5MB in the beginning and 678.2MB in the end (delta: -384.7MB). Peak memory consumption was 394.4MB. Max. memory is 8.0GB. [2023-12-21 03:24:27,959 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 219.2MB. Free memory was 170.6MB in the beginning and 170.4MB in the end (delta: 136.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 328.76ms. Allocated memory is still 380.6MB. Free memory was 328.1MB in the beginning and 310.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.83ms. Allocated memory is still 380.6MB. Free memory was 310.8MB in the beginning and 309.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.61ms. Allocated memory is still 380.6MB. Free memory was 309.1MB in the beginning and 307.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 319.20ms. Allocated memory is still 380.6MB. Free memory was 307.1MB in the beginning and 294.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 859854.97ms. Allocated memory was 380.6MB in the beginning and 723.5MB in the end (delta: 342.9MB). Free memory was 293.5MB in the beginning and 678.2MB in the end (delta: -384.7MB). Peak memory consumption was 394.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 543]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 543). Cancelled while NwaCegarLoop was analyzing trace of length 34 with TraceHistMax 6,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-964-2-17-1 term,while PolyPacSimplificationTermWalker was simplifying 8 xjuncts wrt. a ∧-970-2-17-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 859.8s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 mSolverCounterUnknown, 239 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 239 mSDsluCounter, 794 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 184 IncrementalHoareTripleChecker+Unchecked, 705 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1232 IncrementalHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 89 mSDtfsCounter, 1232 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 436 GetRequests, 221 SyntacticMatches, 1 SemanticMatches, 214 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1858 ImplicationChecksByTransitivity, 28.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=10, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 13 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 40.8s InterpolantComputationTime, 314 NumberOfCodeBlocks, 309 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 437 ConstructedInterpolants, 69 QuantifiedInterpolants, 26010 SizeOfPredicates, 68 NumberOfNonLiveVariables, 1125 ConjunctsInSsa, 401 ConjunctsInUnsatCore, 24 InterpolantComputations, 3 PerfectInterpolantSequences, 85/518 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