/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-tiling/poly2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 18:35:06,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 18:35:06,108 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 18:35:06,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 18:35:06,113 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 18:35:06,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 18:35:06,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 18:35:06,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 18:35:06,142 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 18:35:06,145 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 18:35:06,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 18:35:06,145 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 18:35:06,145 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 18:35:06,147 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 18:35:06,147 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 18:35:06,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 18:35:06,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 18:35:06,147 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 18:35:06,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 18:35:06,148 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 18:35:06,149 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 18:35:06,149 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 18:35:06,149 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 18:35:06,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 18:35:06,149 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 18:35:06,150 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 18:35:06,150 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 18:35:06,150 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 18:35:06,150 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 18:35:06,150 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 18:35:06,151 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 18:35:06,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 18:35:06,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 18:35:06,151 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 18:35:06,152 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 18:35:06,152 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 18:35:06,152 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 18:35:06,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 18:35:06,152 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 18:35:06,152 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 18:35:06,152 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 18:35:06,153 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 18:35:06,153 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 18:35:06,153 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 18:35:06,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 18:35:06,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 18:35:06,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 18:35:06,358 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 18:35:06,359 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 18:35:06,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/poly2.c [2023-12-18 18:35:07,341 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 18:35:07,512 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 18:35:07,512 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/poly2.c [2023-12-18 18:35:07,517 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80dea8195/c8d589071d654936b0ef38de710a2448/FLAG811207af9 [2023-12-18 18:35:07,526 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80dea8195/c8d589071d654936b0ef38de710a2448 [2023-12-18 18:35:07,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 18:35:07,529 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 18:35:07,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 18:35:07,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 18:35:07,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 18:35:07,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 06:35:07" (1/1) ... [2023-12-18 18:35:07,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31f596a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:07, skipping insertion in model container [2023-12-18 18:35:07,535 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 06:35:07" (1/1) ... [2023-12-18 18:35:07,547 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 18:35:07,637 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/poly2.c[396,409] [2023-12-18 18:35:07,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 18:35:07,663 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 18:35:07,674 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/poly2.c[396,409] [2023-12-18 18:35:07,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 18:35:07,691 INFO L206 MainTranslator]: Completed translation [2023-12-18 18:35:07,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:07 WrapperNode [2023-12-18 18:35:07,692 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 18:35:07,693 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 18:35:07,693 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 18:35:07,693 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 18:35:07,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:07" (1/1) ... [2023-12-18 18:35:07,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:07" (1/1) ... [2023-12-18 18:35:07,729 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2023-12-18 18:35:07,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 18:35:07,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 18:35:07,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 18:35:07,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 18:35:07,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:07" (1/1) ... [2023-12-18 18:35:07,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:07" (1/1) ... [2023-12-18 18:35:07,740 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:07" (1/1) ... [2023-12-18 18:35:07,757 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 8, 4]. 57 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 2 writes are split as follows [0, 0, 2]. [2023-12-18 18:35:07,757 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:07" (1/1) ... [2023-12-18 18:35:07,757 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:07" (1/1) ... [2023-12-18 18:35:07,768 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:07" (1/1) ... [2023-12-18 18:35:07,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:07" (1/1) ... [2023-12-18 18:35:07,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:07" (1/1) ... [2023-12-18 18:35:07,775 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:07" (1/1) ... [2023-12-18 18:35:07,776 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 18:35:07,777 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 18:35:07,777 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 18:35:07,777 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 18:35:07,777 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:07" (1/1) ... [2023-12-18 18:35:07,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 18:35:07,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:07,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-18 18:35:07,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-18 18:35:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 18:35:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 18:35:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-18 18:35:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-18 18:35:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-18 18:35:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-18 18:35:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-18 18:35:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-18 18:35:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 18:35:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 18:35:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-18 18:35:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-18 18:35:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-18 18:35:07,905 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 18:35:07,907 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 18:35:08,042 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 18:35:08,063 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 18:35:08,063 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-18 18:35:08,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 06:35:08 BoogieIcfgContainer [2023-12-18 18:35:08,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 18:35:08,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 18:35:08,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 18:35:08,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 18:35:08,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 06:35:07" (1/3) ... [2023-12-18 18:35:08,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b1bf44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 06:35:08, skipping insertion in model container [2023-12-18 18:35:08,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:35:07" (2/3) ... [2023-12-18 18:35:08,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b1bf44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 06:35:08, skipping insertion in model container [2023-12-18 18:35:08,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 06:35:08" (3/3) ... [2023-12-18 18:35:08,070 INFO L112 eAbstractionObserver]: Analyzing ICFG poly2.c [2023-12-18 18:35:08,083 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 18:35:08,083 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-18 18:35:08,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 18:35:08,128 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;@3923cf85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 18:35:08,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-18 18:35:08,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:08,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-18 18:35:08,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:08,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:08,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:08,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:08,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1857965342, now seen corresponding path program 1 times [2023-12-18 18:35:08,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:08,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596370064] [2023-12-18 18:35:08,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:08,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:08,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:08,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596370064] [2023-12-18 18:35:08,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-18 18:35:08,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799530395] [2023-12-18 18:35:08,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:08,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:08,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:08,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:08,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 18:35:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:08,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-18 18:35:08,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:08,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 18:35:08,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799530395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 18:35:08,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 18:35:08,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 18:35:08,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350252246] [2023-12-18 18:35:08,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 18:35:08,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 18:35:08,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:08,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 18:35:08,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 18:35:08,389 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2023-12-18 18:35:08,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:08,405 INFO L93 Difference]: Finished difference Result 25 states and 36 transitions. [2023-12-18 18:35:08,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 18:35:08,407 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 [2023-12-18 18:35:08,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:08,411 INFO L225 Difference]: With dead ends: 25 [2023-12-18 18:35:08,412 INFO L226 Difference]: Without dead ends: 11 [2023-12-18 18:35:08,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 18:35:08,415 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 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 [2023-12-18 18:35:08,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 18:35:08,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-18 18:35:08,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-18 18:35:08,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-12-18 18:35:08,435 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2023-12-18 18:35:08,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:08,436 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-12-18 18:35:08,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2023-12-18 18:35:08,436 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-12-18 18:35:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-18 18:35:08,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:08,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:08,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-18 18:35:08,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-18 18:35:08,643 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:08,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:08,644 INFO L85 PathProgramCache]: Analyzing trace with hash 827910552, now seen corresponding path program 1 times [2023-12-18 18:35:08,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:08,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595395738] [2023-12-18 18:35:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:08,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:08,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:08,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595395738] [2023-12-18 18:35:08,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-18 18:35:08,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092756707] [2023-12-18 18:35:08,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:08,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:08,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:08,706 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:08,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 18:35:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:08,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 18:35:08,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:08,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 18:35:08,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092756707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 18:35:08,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 18:35:08,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 18:35:08,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038549882] [2023-12-18 18:35:08,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 18:35:08,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 18:35:08,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:08,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 18:35:08,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 18:35:08,813 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2023-12-18 18:35:08,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:08,853 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2023-12-18 18:35:08,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 18:35:08,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2023-12-18 18:35:08,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:08,853 INFO L225 Difference]: With dead ends: 20 [2023-12-18 18:35:08,853 INFO L226 Difference]: Without dead ends: 12 [2023-12-18 18:35:08,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 18:35:08,854 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:08,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 18:35:08,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-18 18:35:08,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-18 18:35:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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) [2023-12-18 18:35:08,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-12-18 18:35:08,857 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2023-12-18 18:35:08,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:08,857 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-12-18 18:35:08,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2023-12-18 18:35:08,858 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-12-18 18:35:08,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-18 18:35:08,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:08,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:08,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 18:35:09,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-18 18:35:09,063 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:09,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:09,064 INFO L85 PathProgramCache]: Analyzing trace with hash -790291495, now seen corresponding path program 1 times [2023-12-18 18:35:09,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:09,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924867392] [2023-12-18 18:35:09,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:09,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:09,074 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:35:09,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787208695] [2023-12-18 18:35:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:09,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:09,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:09,080 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:09,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 18:35:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:09,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-18 18:35:09,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:09,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:35:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:09,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:09,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924867392] [2023-12-18 18:35:09,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:35:09,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787208695] [2023-12-18 18:35:09,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787208695] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:35:09,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:35:09,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-18 18:35:09,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116117852] [2023-12-18 18:35:09,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:35:09,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 18:35:09,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:09,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 18:35:09,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-18 18:35:09,215 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:09,240 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2023-12-18 18:35:09,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 18:35:09,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-18 18:35:09,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:09,241 INFO L225 Difference]: With dead ends: 21 [2023-12-18 18:35:09,241 INFO L226 Difference]: Without dead ends: 13 [2023-12-18 18:35:09,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-18 18:35:09,244 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:09,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 18:35:09,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-18 18:35:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-18 18:35:09,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:09,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-12-18 18:35:09,249 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2023-12-18 18:35:09,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:09,249 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-12-18 18:35:09,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:09,250 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-12-18 18:35:09,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-18 18:35:09,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:09,250 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:09,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 18:35:09,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:09,455 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:09,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:09,456 INFO L85 PathProgramCache]: Analyzing trace with hash 585052600, now seen corresponding path program 2 times [2023-12-18 18:35:09,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:09,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570466911] [2023-12-18 18:35:09,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:09,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:09,476 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:35:09,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [57897370] [2023-12-18 18:35:09,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 18:35:09,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:09,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:09,488 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:09,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 18:35:09,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-18 18:35:09,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:35:09,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 18:35:09,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-18 18:35:09,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 18:35:09,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:09,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570466911] [2023-12-18 18:35:09,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:35:09,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57897370] [2023-12-18 18:35:09,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57897370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 18:35:09,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 18:35:09,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 18:35:09,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327555542] [2023-12-18 18:35:09,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 18:35:09,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 18:35:09,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:09,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 18:35:09,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 18:35:09,559 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:09,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:09,575 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2023-12-18 18:35:09,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 18:35:09,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-18 18:35:09,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:09,585 INFO L225 Difference]: With dead ends: 25 [2023-12-18 18:35:09,585 INFO L226 Difference]: Without dead ends: 19 [2023-12-18 18:35:09,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 18:35:09,586 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:09,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 9 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 18:35:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-18 18:35:09,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2023-12-18 18:35:09,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:09,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-12-18 18:35:09,589 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2023-12-18 18:35:09,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:09,589 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-12-18 18:35:09,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-12-18 18:35:09,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-18 18:35:09,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:09,590 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:09,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-18 18:35:09,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:09,798 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:09,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:09,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2057523480, now seen corresponding path program 1 times [2023-12-18 18:35:09,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:09,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518335564] [2023-12-18 18:35:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:09,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:09,808 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:35:09,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720061009] [2023-12-18 18:35:09,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:09,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:09,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:09,823 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:09,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 18:35:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:09,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-18 18:35:09,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-18 18:35:09,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:35:09,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-18 18:35:09,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:09,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518335564] [2023-12-18 18:35:09,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:35:09,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720061009] [2023-12-18 18:35:09,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720061009] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:35:09,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:35:09,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-18 18:35:09,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620099243] [2023-12-18 18:35:09,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:35:09,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 18:35:09,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:09,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 18:35:09,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-18 18:35:09,944 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2023-12-18 18:35:09,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:09,991 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2023-12-18 18:35:09,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 18:35:09,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) Word has length 12 [2023-12-18 18:35:09,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:09,994 INFO L225 Difference]: With dead ends: 31 [2023-12-18 18:35:09,994 INFO L226 Difference]: Without dead ends: 25 [2023-12-18 18:35:09,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-18 18:35:09,996 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 29 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:09,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 12 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 18:35:09,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-18 18:35:10,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2023-12-18 18:35:10,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:10,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-12-18 18:35:10,003 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2023-12-18 18:35:10,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:10,003 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-12-18 18:35:10,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2023-12-18 18:35:10,003 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-12-18 18:35:10,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-18 18:35:10,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:10,004 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:10,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 18:35:10,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:10,209 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:10,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:10,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1921963960, now seen corresponding path program 2 times [2023-12-18 18:35:10,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:10,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329485606] [2023-12-18 18:35:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:10,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:10,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:35:10,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882292017] [2023-12-18 18:35:10,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 18:35:10,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:10,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:10,224 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:10,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 18:35:10,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 18:35:10,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:35:10,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-18 18:35:10,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:10,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-18 18:35:10,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:35:10,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-18 18:35:10,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:35:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:10,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:35:10,842 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 52 treesize of output 48 [2023-12-18 18:35:10,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:35:10,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 95 [2023-12-18 18:35:10,951 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:35:10,951 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 252 treesize of output 244 [2023-12-18 18:35:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:10,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:10,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329485606] [2023-12-18 18:35:10,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:35:10,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882292017] [2023-12-18 18:35:10,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882292017] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:35:10,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:35:10,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2023-12-18 18:35:10,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564773257] [2023-12-18 18:35:10,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:35:10,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-18 18:35:10,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:10,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-18 18:35:10,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-12-18 18:35:10,998 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:11,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:11,395 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2023-12-18 18:35:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-18 18:35:11,395 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-18 18:35:11,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:11,396 INFO L225 Difference]: With dead ends: 57 [2023-12-18 18:35:11,396 INFO L226 Difference]: Without dead ends: 55 [2023-12-18 18:35:11,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2023-12-18 18:35:11,396 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 43 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:11,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 63 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 18:35:11,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-18 18:35:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 26. [2023-12-18 18:35:11,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:11,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2023-12-18 18:35:11,403 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2023-12-18 18:35:11,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:11,403 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2023-12-18 18:35:11,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2023-12-18 18:35:11,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-18 18:35:11,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:11,404 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:11,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-18 18:35:11,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:11,609 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:11,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:11,609 INFO L85 PathProgramCache]: Analyzing trace with hash 695472088, now seen corresponding path program 3 times [2023-12-18 18:35:11,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:11,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259094688] [2023-12-18 18:35:11,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:11,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:11,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:35:11,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525750143] [2023-12-18 18:35:11,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 18:35:11,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:11,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:11,638 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:11,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 18:35:11,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-18 18:35:11,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:35:11,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-18 18:35:11,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-18 18:35:11,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:35:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-18 18:35:11,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:11,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259094688] [2023-12-18 18:35:11,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:35:11,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525750143] [2023-12-18 18:35:11,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525750143] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:35:11,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:35:11,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-12-18 18:35:11,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123800373] [2023-12-18 18:35:11,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:35:11,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-18 18:35:11,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:11,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-18 18:35:11,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-18 18:35:11,788 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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) [2023-12-18 18:35:11,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:11,941 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2023-12-18 18:35:11,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-18 18:35:11,942 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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 15 [2023-12-18 18:35:11,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:11,950 INFO L225 Difference]: With dead ends: 65 [2023-12-18 18:35:11,950 INFO L226 Difference]: Without dead ends: 56 [2023-12-18 18:35:11,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-18 18:35:11,951 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 48 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:11,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 67 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 18:35:11,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-18 18:35:11,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 31. [2023-12-18 18:35:11,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-12-18 18:35:11,958 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 15 [2023-12-18 18:35:11,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:11,958 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-12-18 18:35:11,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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) [2023-12-18 18:35:11,958 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-12-18 18:35:11,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-18 18:35:11,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:11,959 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:11,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 18:35:12,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:12,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:12,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:12,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1365480648, now seen corresponding path program 4 times [2023-12-18 18:35:12,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:12,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058888541] [2023-12-18 18:35:12,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:12,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:12,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:35:12,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696344534] [2023-12-18 18:35:12,168 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 18:35:12,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:12,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:12,172 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:12,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 18:35:12,219 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 18:35:12,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:35:12,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-18 18:35:12,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:12,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:35:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:12,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:12,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058888541] [2023-12-18 18:35:12,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:35:12,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696344534] [2023-12-18 18:35:12,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696344534] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:35:12,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:35:12,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2023-12-18 18:35:12,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170256433] [2023-12-18 18:35:12,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:35:12,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-18 18:35:12,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:12,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-18 18:35:12,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-12-18 18:35:12,321 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:12,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:12,504 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2023-12-18 18:35:12,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-18 18:35:12,504 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-18 18:35:12,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:12,505 INFO L225 Difference]: With dead ends: 74 [2023-12-18 18:35:12,505 INFO L226 Difference]: Without dead ends: 68 [2023-12-18 18:35:12,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2023-12-18 18:35:12,505 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 63 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:12,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 107 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 18:35:12,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-18 18:35:12,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 32. [2023-12-18 18:35:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:12,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-12-18 18:35:12,516 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 16 [2023-12-18 18:35:12,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:12,516 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-12-18 18:35:12,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:12,516 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-12-18 18:35:12,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-18 18:35:12,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:12,517 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:12,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 18:35:12,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-18 18:35:12,723 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:12,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:12,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1426612968, now seen corresponding path program 5 times [2023-12-18 18:35:12,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:12,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24576758] [2023-12-18 18:35:12,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:12,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:12,743 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:35:12,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340312099] [2023-12-18 18:35:12,743 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 18:35:12,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:12,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:12,764 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:12,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 18:35:13,086 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-18 18:35:13,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:35:13,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-18 18:35:13,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-18 18:35:13,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:35:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-18 18:35:13,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:13,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24576758] [2023-12-18 18:35:13,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:35:13,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340312099] [2023-12-18 18:35:13,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340312099] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:35:13,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:35:13,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-12-18 18:35:13,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830577123] [2023-12-18 18:35:13,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:35:13,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-18 18:35:13,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:13,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-18 18:35:13,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-18 18:35:13,164 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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) [2023-12-18 18:35:13,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:13,234 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2023-12-18 18:35:13,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 18:35:13,236 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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 16 [2023-12-18 18:35:13,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:13,236 INFO L225 Difference]: With dead ends: 69 [2023-12-18 18:35:13,236 INFO L226 Difference]: Without dead ends: 55 [2023-12-18 18:35:13,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-12-18 18:35:13,237 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 51 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:13,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 35 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 18:35:13,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-18 18:35:13,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 38. [2023-12-18 18:35:13,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:13,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-12-18 18:35:13,244 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 16 [2023-12-18 18:35:13,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:13,244 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-12-18 18:35:13,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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) [2023-12-18 18:35:13,244 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-12-18 18:35:13,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-18 18:35:13,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:13,245 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:13,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-18 18:35:13,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:13,450 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:13,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:13,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1024533829, now seen corresponding path program 1 times [2023-12-18 18:35:13,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:13,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109558075] [2023-12-18 18:35:13,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:13,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:13,458 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:35:13,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679596599] [2023-12-18 18:35:13,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:13,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:13,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:13,474 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:13,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 18:35:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:35:13,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-18 18:35:13,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:13,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-18 18:35:13,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-18 18:35:13,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-12-18 18:35:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:13,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:35:13,893 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 52 treesize of output 48 [2023-12-18 18:35:13,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:35:13,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 95 [2023-12-18 18:35:13,929 INFO L349 Elim1Store]: treesize reduction 23, result has 39.5 percent of original size [2023-12-18 18:35:13,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 47 [2023-12-18 18:35:13,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:35:13,943 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 24 treesize of output 22 [2023-12-18 18:35:13,951 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:13,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:35:13,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109558075] [2023-12-18 18:35:13,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:35:13,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679596599] [2023-12-18 18:35:13,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679596599] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:35:13,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:35:13,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2023-12-18 18:35:13,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345794969] [2023-12-18 18:35:13,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:35:13,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-18 18:35:13,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:35:13,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-18 18:35:13,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-18 18:35:13,952 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:35:14,207 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2023-12-18 18:35:14,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-18 18:35:14,208 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-18 18:35:14,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:35:14,208 INFO L225 Difference]: With dead ends: 50 [2023-12-18 18:35:14,208 INFO L226 Difference]: Without dead ends: 38 [2023-12-18 18:35:14,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2023-12-18 18:35:14,209 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 18:35:14,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 80 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 18:35:14,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-18 18:35:14,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2023-12-18 18:35:14,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-12-18 18:35:14,214 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 16 [2023-12-18 18:35:14,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:35:14,214 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-12-18 18:35:14,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:35:14,214 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-12-18 18:35:14,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-18 18:35:14,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:35:14,214 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:35:14,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 18:35:14,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-18 18:35:14,419 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:35:14,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:35:14,420 INFO L85 PathProgramCache]: Analyzing trace with hash 660909528, now seen corresponding path program 6 times [2023-12-18 18:35:14,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:35:14,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590541576] [2023-12-18 18:35:14,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:35:14,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:35:14,439 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:35:14,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532071743] [2023-12-18 18:35:14,440 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 18:35:14,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:35:14,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:35:14,451 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:35:14,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 18:35:14,565 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-18 18:35:14,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:35:14,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-18 18:35:14,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:35:14,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-18 18:35:14,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:35:14,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:35:14,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:35:14,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-18 18:35:14,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:35:14,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:35:14,683 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:35:14,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 22 [2023-12-18 18:35:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:35:14,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:35:44,364 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse22 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse19 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse0 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse21 (* .cse19 8)) (.cse20 (* .cse22 8))) (let ((.cse9 (+ .cse20 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse10 (< .cse22 2147483648)) (.cse2 (< 2147483647 .cse22)) (.cse1 (< 2147483647 .cse19)) (.cse6 (+ .cse21 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse12 (+ .cse21 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse7 (+ .cse20 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse13 (< .cse19 2147483648)) (.cse14 (* 8 .cse0))) (and (or (< .cse0 2147483648) (let ((.cse4 (+ .cse14 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or .cse1 (and (or .cse2 (forall ((v_DerPreprocessor_12 Int) (v_DerPreprocessor_17 Int) (v_ArrVal_241 Int)) (let ((.cse3 (store (store .cse5 .cse6 v_DerPreprocessor_17) .cse7 v_DerPreprocessor_12))) (or (= (select (store .cse3 .cse4 v_ArrVal_241) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse3 .cse4) (+ v_ArrVal_241 2)))))) (or (forall ((v_prenex_15 Int) (v_DerPreprocessor_11 Int) (v_DerPreprocessor_17 Int)) (let ((.cse8 (store (store .cse5 .cse6 v_DerPreprocessor_17) .cse9 v_DerPreprocessor_11))) (or (= (select (store .cse8 .cse4 v_prenex_15) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse8 .cse4) (+ 2 v_prenex_15))))) .cse10))) (or (forall ((v_DerPreprocessor_11 Int) (v_prenex_14 Int) (v_DerPreprocessor_16 Int)) (let ((.cse11 (store (store .cse5 .cse12 v_DerPreprocessor_16) .cse9 v_DerPreprocessor_11))) (or (= (select (store .cse11 .cse4 v_prenex_14) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse11 .cse4) (+ 2 v_prenex_14))))) .cse13)))) (or (let ((.cse16 (+ .cse14 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or (forall ((v_DerPreprocessor_13 Int) (v_ArrVal_241 Int) (v_DerPreprocessor_10 Int)) (let ((.cse15 (store (store .cse5 .cse12 v_DerPreprocessor_13) .cse9 v_DerPreprocessor_10))) (or (= (select (store .cse15 .cse16 v_ArrVal_241) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse15 .cse16) (+ v_ArrVal_241 2))))) .cse10) (or .cse2 (and (or .cse1 (forall ((v_DerPreprocessor_14 Int) (v_DerPreprocessor_9 Int) (v_ArrVal_241 Int)) (let ((.cse17 (store (store .cse5 .cse6 v_DerPreprocessor_14) .cse7 v_DerPreprocessor_9))) (or (< (select .cse17 .cse16) (+ v_ArrVal_241 2)) (= (select (store .cse17 .cse16 v_ArrVal_241) |c_ULTIMATE.start_main_~a~0#1.offset|) 0))))) (or (forall ((v_DerPreprocessor_15 Int) (v_DerPreprocessor_9 Int) (v_ArrVal_241 Int)) (let ((.cse18 (store (store .cse5 .cse12 v_DerPreprocessor_15) .cse7 v_DerPreprocessor_9))) (or (< (select .cse18 .cse16) (+ v_ArrVal_241 2)) (= (select (store .cse18 .cse16 v_ArrVal_241) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)))) .cse13))))) (< 2147483647 .cse0)))))) is different from false [2023-12-18 18:36:21,725 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 52 treesize of output 48 [2023-12-18 18:36:21,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:36:21,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 95 [2023-12-18 18:36:22,018 INFO L349 Elim1Store]: treesize reduction 20, result has 54.5 percent of original size [2023-12-18 18:36:22,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1174 treesize of output 1133 [2023-12-18 18:36:22,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:36:22,368 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 1630 treesize of output 1595 [2023-12-18 18:36:22,463 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 15 refuted. 1 times theorem prover too weak. 0 trivial. 4 not checked. [2023-12-18 18:36:22,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:36:22,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590541576] [2023-12-18 18:36:22,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:36:22,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532071743] [2023-12-18 18:36:22,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532071743] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:36:22,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:36:22,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2023-12-18 18:36:22,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566151234] [2023-12-18 18:36:22,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:36:22,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-18 18:36:22,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:36:22,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-18 18:36:22,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=464, Unknown=11, NotChecked=44, Total=600 [2023-12-18 18:36:22,465 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 25 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:08,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-18 18:37:08,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:37:08,445 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2023-12-18 18:37:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-18 18:37:08,445 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-18 18:37:08,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:37:08,446 INFO L225 Difference]: With dead ends: 91 [2023-12-18 18:37:08,446 INFO L226 Difference]: Without dead ends: 89 [2023-12-18 18:37:08,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 105.9s TimeCoverageRelationStatistics Valid=557, Invalid=3588, Unknown=19, NotChecked=126, Total=4290 [2023-12-18 18:37:08,448 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 157 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 57 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-18 18:37:08,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 135 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 308 Invalid, 1 Unknown, 86 Unchecked, 5.9s Time] [2023-12-18 18:37:08,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-18 18:37:08,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 41. [2023-12-18 18:37:08,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.35) internal successors, (54), 40 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:08,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2023-12-18 18:37:08,459 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 17 [2023-12-18 18:37:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:37:08,460 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2023-12-18 18:37:08,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:08,460 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2023-12-18 18:37:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-18 18:37:08,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:37:08,460 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:37:08,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-18 18:37:08,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-18 18:37:08,666 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:37:08,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:37:08,666 INFO L85 PathProgramCache]: Analyzing trace with hash -688076970, now seen corresponding path program 2 times [2023-12-18 18:37:08,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:37:08,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567218591] [2023-12-18 18:37:08,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:37:08,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:37:08,700 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:37:08,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618150591] [2023-12-18 18:37:08,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 18:37:08,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:37:08,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:37:08,704 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:37:08,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-18 18:37:08,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 18:37:08,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:37:08,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-18 18:37:08,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:37:08,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-18 18:37:08,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-18 18:37:08,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-18 18:37:08,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-18 18:37:08,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-18 18:37:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:37:08,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:37:09,734 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 52 treesize of output 48 [2023-12-18 18:37:09,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:37:09,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 95 [2023-12-18 18:37:09,811 INFO L349 Elim1Store]: treesize reduction 22, result has 54.2 percent of original size [2023-12-18 18:37:09,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 175 treesize of output 144 [2023-12-18 18:37:09,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:37:09,899 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 105 [2023-12-18 18:37:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:37:09,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:37:09,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567218591] [2023-12-18 18:37:09,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:37:09,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618150591] [2023-12-18 18:37:09,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618150591] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:37:09,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:37:09,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-18 18:37:09,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232759360] [2023-12-18 18:37:09,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:37:09,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-18 18:37:09,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:37:09,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-18 18:37:09,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2023-12-18 18:37:09,994 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:11,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:37:11,884 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2023-12-18 18:37:11,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-18 18:37:11,884 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-18 18:37:11,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:37:11,885 INFO L225 Difference]: With dead ends: 96 [2023-12-18 18:37:11,885 INFO L226 Difference]: Without dead ends: 94 [2023-12-18 18:37:11,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=291, Invalid=1779, Unknown=0, NotChecked=0, Total=2070 [2023-12-18 18:37:11,886 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 109 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 18:37:11,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 110 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 18:37:11,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-18 18:37:11,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 53. [2023-12-18 18:37:11,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 52 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) [2023-12-18 18:37:11,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2023-12-18 18:37:11,903 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 18 [2023-12-18 18:37:11,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:37:11,903 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2023-12-18 18:37:11,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2023-12-18 18:37:11,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-18 18:37:11,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:37:11,904 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:37:11,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-18 18:37:12,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-18 18:37:12,110 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:37:12,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:37:12,110 INFO L85 PathProgramCache]: Analyzing trace with hash 731084312, now seen corresponding path program 7 times [2023-12-18 18:37:12,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:37:12,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566083091] [2023-12-18 18:37:12,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:37:12,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:37:12,125 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:37:12,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861296375] [2023-12-18 18:37:12,125 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 18:37:12,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:37:12,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:37:12,126 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:37:12,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-18 18:37:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:37:12,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-18 18:37:12,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:37:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:37:12,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:37:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:37:12,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:37:12,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566083091] [2023-12-18 18:37:12,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:37:12,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861296375] [2023-12-18 18:37:12,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861296375] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:37:12,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:37:12,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2023-12-18 18:37:12,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886263230] [2023-12-18 18:37:12,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:37:12,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-18 18:37:12,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:37:12,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-18 18:37:12,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2023-12-18 18:37:12,419 INFO L87 Difference]: Start difference. First operand 53 states and 69 transitions. Second operand has 25 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:12,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:37:12,925 INFO L93 Difference]: Finished difference Result 163 states and 183 transitions. [2023-12-18 18:37:12,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-18 18:37:12,925 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-18 18:37:12,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:37:12,926 INFO L225 Difference]: With dead ends: 163 [2023-12-18 18:37:12,926 INFO L226 Difference]: Without dead ends: 154 [2023-12-18 18:37:12,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=587, Invalid=1765, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 18:37:12,927 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 163 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 18:37:12,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 374 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 18:37:12,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-12-18 18:37:12,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 57. [2023-12-18 18:37:12,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 56 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2023-12-18 18:37:12,945 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 21 [2023-12-18 18:37:12,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:37:12,945 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2023-12-18 18:37:12,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:12,945 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2023-12-18 18:37:12,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-18 18:37:12,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:37:12,945 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:37:12,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-18 18:37:13,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-18 18:37:13,150 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:37:13,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:37:13,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1461035527, now seen corresponding path program 8 times [2023-12-18 18:37:13,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:37:13,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558903218] [2023-12-18 18:37:13,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:37:13,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:37:13,157 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:37:13,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049399272] [2023-12-18 18:37:13,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 18:37:13,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:37:13,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:37:13,162 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:37:13,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-18 18:37:13,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 18:37:13,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:37:13,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-18 18:37:13,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:37:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-18 18:37:13,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:37:13,333 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-18 18:37:13,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:37:13,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558903218] [2023-12-18 18:37:13,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:37:13,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049399272] [2023-12-18 18:37:13,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049399272] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:37:13,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:37:13,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2023-12-18 18:37:13,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617780398] [2023-12-18 18:37:13,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:37:13,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-18 18:37:13,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:37:13,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-18 18:37:13,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-12-18 18:37:13,335 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:13,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:37:13,463 INFO L93 Difference]: Finished difference Result 111 states and 132 transitions. [2023-12-18 18:37:13,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-18 18:37:13,464 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-18 18:37:13,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:37:13,464 INFO L225 Difference]: With dead ends: 111 [2023-12-18 18:37:13,464 INFO L226 Difference]: Without dead ends: 90 [2023-12-18 18:37:13,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2023-12-18 18:37:13,465 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 18:37:13,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 56 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 18:37:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-18 18:37:13,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 66. [2023-12-18 18:37:13,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 65 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:13,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2023-12-18 18:37:13,491 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 21 [2023-12-18 18:37:13,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:37:13,491 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2023-12-18 18:37:13,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:13,492 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2023-12-18 18:37:13,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-18 18:37:13,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:37:13,494 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:37:13,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-18 18:37:13,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:37:13,699 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:37:13,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:37:13,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1383114983, now seen corresponding path program 3 times [2023-12-18 18:37:13,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:37:13,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920789799] [2023-12-18 18:37:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:37:13,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:37:13,706 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:37:13,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505371505] [2023-12-18 18:37:13,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 18:37:13,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:37:13,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:37:13,707 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:37:13,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-18 18:37:13,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-18 18:37:13,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:37:13,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-18 18:37:13,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:37:14,005 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 [2023-12-18 18:37:14,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-18 18:37:14,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-18 18:37:14,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 98 [2023-12-18 18:37:14,097 INFO L349 Elim1Store]: treesize reduction 39, result has 2.5 percent of original size [2023-12-18 18:37:14,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 152 [2023-12-18 18:37:14,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 19 [2023-12-18 18:37:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:37:14,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:37:15,007 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 52 treesize of output 48 [2023-12-18 18:37:15,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:37:15,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 95 [2023-12-18 18:37:15,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 18:37:15,094 INFO L349 Elim1Store]: treesize reduction 22, result has 54.2 percent of original size [2023-12-18 18:37:15,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 137 treesize of output 100 [2023-12-18 18:37:15,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:37:15,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 72 [2023-12-18 18:37:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:37:15,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:37:15,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920789799] [2023-12-18 18:37:15,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:37:15,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505371505] [2023-12-18 18:37:15,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505371505] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:37:15,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:37:15,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-12-18 18:37:15,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547032926] [2023-12-18 18:37:15,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:37:15,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-18 18:37:15,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:37:15,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-18 18:37:15,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=767, Unknown=0, NotChecked=0, Total=930 [2023-12-18 18:37:15,357 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 31 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:17,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:37:17,289 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2023-12-18 18:37:17,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-18 18:37:17,289 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-18 18:37:17,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:37:17,289 INFO L225 Difference]: With dead ends: 85 [2023-12-18 18:37:17,289 INFO L226 Difference]: Without dead ends: 69 [2023-12-18 18:37:17,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=678, Invalid=3104, Unknown=0, NotChecked=0, Total=3782 [2023-12-18 18:37:17,291 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 96 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 18:37:17,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 106 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 18:37:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-18 18:37:17,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2023-12-18 18:37:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2023-12-18 18:37:17,315 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 21 [2023-12-18 18:37:17,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:37:17,315 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2023-12-18 18:37:17,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:17,315 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2023-12-18 18:37:17,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-18 18:37:17,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:37:17,316 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:37:17,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-18 18:37:17,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-18 18:37:17,521 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:37:17,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:37:17,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1614152950, now seen corresponding path program 4 times [2023-12-18 18:37:17,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:37:17,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691515396] [2023-12-18 18:37:17,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:37:17,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:37:17,531 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:37:17,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933777850] [2023-12-18 18:37:17,532 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 18:37:17,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:37:17,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:37:17,533 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:37:17,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-18 18:37:17,785 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 18:37:17,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:37:17,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-18 18:37:17,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:37:17,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-18 18:37:17,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:37:17,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:37:17,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:37:17,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-18 18:37:17,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-12-18 18:37:17,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:37:17,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:37:17,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:37:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:37:17,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:37:21,839 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 52 treesize of output 48 [2023-12-18 18:37:21,857 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:37:21,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 95 [2023-12-18 18:37:22,147 INFO L349 Elim1Store]: treesize reduction 22, result has 54.2 percent of original size [2023-12-18 18:37:22,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1798 treesize of output 1731 [2023-12-18 18:37:22,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:37:22,623 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 2027 treesize of output 1950 [2023-12-18 18:37:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:37:22,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:37:22,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691515396] [2023-12-18 18:37:22,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:37:22,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933777850] [2023-12-18 18:37:22,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933777850] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:37:22,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:37:22,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 30 [2023-12-18 18:37:22,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495889328] [2023-12-18 18:37:22,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:37:22,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-18 18:37:22,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:37:22,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-18 18:37:22,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2023-12-18 18:37:22,731 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 30 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:34,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:37:34,585 INFO L93 Difference]: Finished difference Result 145 states and 162 transitions. [2023-12-18 18:37:34,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-18 18:37:34,585 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-18 18:37:34,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:37:34,585 INFO L225 Difference]: With dead ends: 145 [2023-12-18 18:37:34,586 INFO L226 Difference]: Without dead ends: 143 [2023-12-18 18:37:34,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=566, Invalid=3466, Unknown=0, NotChecked=0, Total=4032 [2023-12-18 18:37:34,587 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 163 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-18 18:37:34,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 227 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-18 18:37:34,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-12-18 18:37:34,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 65. [2023-12-18 18:37:34,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:34,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2023-12-18 18:37:34,616 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 22 [2023-12-18 18:37:34,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:37:34,616 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2023-12-18 18:37:34,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:34,616 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2023-12-18 18:37:34,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-18 18:37:34,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:37:34,616 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:37:34,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-18 18:37:34,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-18 18:37:34,819 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:37:34,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:37:34,819 INFO L85 PathProgramCache]: Analyzing trace with hash 724269768, now seen corresponding path program 9 times [2023-12-18 18:37:34,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:37:34,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668179232] [2023-12-18 18:37:34,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:37:34,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:37:34,827 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:37:34,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339161056] [2023-12-18 18:37:34,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 18:37:34,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:37:34,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:37:34,835 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:37:34,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-18 18:37:35,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-18 18:37:35,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:37:35,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-18 18:37:35,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:37:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:37:35,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:37:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:37:35,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:37:35,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668179232] [2023-12-18 18:37:35,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:37:35,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339161056] [2023-12-18 18:37:35,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339161056] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:37:35,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:37:35,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2023-12-18 18:37:35,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528028683] [2023-12-18 18:37:35,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:37:35,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-18 18:37:35,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:37:35,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-18 18:37:35,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930 [2023-12-18 18:37:35,661 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand has 31 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:36,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:37:36,440 INFO L93 Difference]: Finished difference Result 286 states and 311 transitions. [2023-12-18 18:37:36,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-18 18:37:36,440 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-18 18:37:36,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:37:36,441 INFO L225 Difference]: With dead ends: 286 [2023-12-18 18:37:36,441 INFO L226 Difference]: Without dead ends: 254 [2023-12-18 18:37:36,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1000, Invalid=3422, Unknown=0, NotChecked=0, Total=4422 [2023-12-18 18:37:36,442 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 762 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 18:37:36,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 138 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 18:37:36,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-12-18 18:37:36,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 123. [2023-12-18 18:37:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 122 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:36,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2023-12-18 18:37:36,527 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 22 [2023-12-18 18:37:36,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:37:36,527 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2023-12-18 18:37:36,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:37:36,527 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2023-12-18 18:37:36,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-18 18:37:36,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:37:36,527 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:37:36,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-18 18:37:36,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-18 18:37:36,734 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:37:36,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:37:36,734 INFO L85 PathProgramCache]: Analyzing trace with hash -2114679112, now seen corresponding path program 5 times [2023-12-18 18:37:36,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:37:36,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212885785] [2023-12-18 18:37:36,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:37:36,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:37:36,740 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:37:36,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194364003] [2023-12-18 18:37:36,741 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 18:37:36,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:37:36,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:37:36,742 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:37:36,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-18 18:39:20,493 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-18 18:39:20,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:39:20,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-18 18:39:20,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:39:20,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-18 18:39:20,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:39:20,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-18 18:39:20,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:39:20,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-12-18 18:39:20,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:39:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:39:20,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:39:22,575 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 52 treesize of output 48 [2023-12-18 18:39:22,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:39:22,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 95 [2023-12-18 18:39:22,648 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:39:22,648 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 262 treesize of output 244 [2023-12-18 18:39:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:39:22,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:39:22,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212885785] [2023-12-18 18:39:22,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:39:22,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194364003] [2023-12-18 18:39:22,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194364003] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:39:22,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:39:22,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 27 [2023-12-18 18:39:22,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876284407] [2023-12-18 18:39:22,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:39:22,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-18 18:39:22,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:39:22,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-18 18:39:22,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2023-12-18 18:39:22,684 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:39:25,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:39:25,567 INFO L93 Difference]: Finished difference Result 177 states and 199 transitions. [2023-12-18 18:39:25,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-18 18:39:25,568 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-18 18:39:25,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:39:25,568 INFO L225 Difference]: With dead ends: 177 [2023-12-18 18:39:25,568 INFO L226 Difference]: Without dead ends: 175 [2023-12-18 18:39:25,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=200, Invalid=1440, Unknown=0, NotChecked=0, Total=1640 [2023-12-18 18:39:25,584 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 54 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-18 18:39:25,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 131 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-18 18:39:25,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-18 18:39:25,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 135. [2023-12-18 18:39:25,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.1492537313432836) internal successors, (154), 134 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:39:25,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 154 transitions. [2023-12-18 18:39:25,695 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 154 transitions. Word has length 23 [2023-12-18 18:39:25,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:39:25,695 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 154 transitions. [2023-12-18 18:39:25,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:39:25,695 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 154 transitions. [2023-12-18 18:39:25,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-18 18:39:25,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:39:25,699 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:39:25,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-18 18:39:25,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-18 18:39:25,904 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:39:25,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:39:25,905 INFO L85 PathProgramCache]: Analyzing trace with hash -416804328, now seen corresponding path program 10 times [2023-12-18 18:39:25,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:39:25,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675569241] [2023-12-18 18:39:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:39:25,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:39:25,915 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:39:25,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316401865] [2023-12-18 18:39:25,916 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 18:39:25,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:39:25,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:39:25,917 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:39:25,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-18 18:39:26,748 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 18:39:26,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:39:26,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 80 conjunts are in the unsatisfiable core [2023-12-18 18:39:26,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:39:26,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-18 18:39:26,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:39:26,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:39:26,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:39:26,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:39:26,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:39:26,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:39:26,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:39:26,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-18 18:39:26,893 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:39:26,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 22 [2023-12-18 18:39:26,912 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:39:26,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 22 [2023-12-18 18:39:26,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:39:26,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:39:26,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:39:26,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:39:27,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-18 18:39:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:39:27,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:39:43,167 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse51 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse56 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse55 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse52 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4) 4294967296)) (.cse54 (mod (+ 5 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse53 (mod (+ 6 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse0 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse45 (* .cse53 8)) (.cse46 (* .cse54 8)) (.cse47 (* .cse52 8)) (.cse48 (* .cse55 8)) (.cse49 (* 8 .cse56)) (.cse50 (* .cse51 8))) (let ((.cse13 (< 2147483647 .cse52)) (.cse30 (< .cse56 2147483648)) (.cse33 (< 2147483647 .cse56)) (.cse28 (< 2147483647 .cse55)) (.cse29 (< .cse55 2147483648)) (.cse24 (< 2147483647 .cse54)) (.cse22 (< .cse54 2147483648)) (.cse14 (< 2147483647 .cse53)) (.cse3 (+ .cse50 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse4 (+ .cse49 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse48)) (.cse6 (+ .cse47 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse7 (+ .cse46 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse8 (+ .cse45 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse26 (< .cse53 2147483648)) (.cse34 (< .cse52 2147483648)) (.cse11 (< .cse51 2147483648)) (.cse12 (< 2147483647 .cse51)) (.cse16 (+ .cse50 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse17 (+ .cse49 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse18 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse48)) (.cse19 (+ .cse47 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse20 (+ .cse46 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse21 (+ .cse45 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse35 (* .cse0 8))) (and (or (< 2147483647 .cse0) (let ((.cse10 (+ .cse35 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse1 (select .cse9 .cse10))) (and (or (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_99 Int) (v_DerPreprocessor_88 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_100 Int) (v_DerPreprocessor_86 Int) (v_prenex_218 Int)) (let ((.cse2 (store .cse9 .cse10 v_ArrVal_673))) (or (< .cse1 (+ v_ArrVal_673 2)) (= (select (store (store (store (store (store (store .cse2 .cse3 v_ArrVal_675) .cse4 v_DerPreprocessor_100) .cse5 v_DerPreprocessor_99) .cse6 v_DerPreprocessor_88) .cse7 v_DerPreprocessor_86) .cse8 v_prenex_218) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse2 .cse3) (+ v_ArrVal_675 2))))) .cse11) (or .cse12 (and (or .cse13 (and (or .cse14 (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_108 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_93 Int) (v_prenex_219 Int) (v_DerPreprocessor_85 Int)) (let ((.cse15 (store .cse9 .cse10 v_ArrVal_673))) (or (< .cse1 (+ v_ArrVal_673 2)) (< (select .cse15 .cse16) (+ v_ArrVal_675 2)) (= (select (store (store (store (store (store (store .cse15 .cse16 v_ArrVal_675) .cse17 v_DerPreprocessor_108) .cse18 v_DerPreprocessor_93) .cse19 v_DerPreprocessor_89) .cse20 v_DerPreprocessor_85) .cse21 v_prenex_219) |c_ULTIMATE.start_main_~a~0#1.offset|) 0))))) (or (and (or .cse22 (forall ((v_ArrVal_675 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_90 Int) (v_prenex_220 Int) (v_DerPreprocessor_110 Int) (v_DerPreprocessor_86 Int)) (let ((.cse23 (store .cse9 .cse10 v_ArrVal_673))) (or (= (select (store (store (store (store (store (store .cse23 .cse16 v_ArrVal_675) .cse17 v_DerPreprocessor_110) .cse18 v_DerPreprocessor_90) .cse19 v_DerPreprocessor_89) .cse7 v_DerPreprocessor_86) .cse8 v_prenex_220) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< .cse1 (+ v_ArrVal_673 2)) (< (select .cse23 .cse16) (+ v_ArrVal_675 2)))))) (or .cse24 (forall ((v_ArrVal_675 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_111 Int) (v_DerPreprocessor_83 Int) (v_DerPreprocessor_91 Int) (v_DerPreprocessor_87 Int)) (let ((.cse25 (store .cse9 .cse10 v_ArrVal_673))) (or (= (select (store (store (store (store (store (store .cse25 .cse16 v_ArrVal_675) .cse17 v_DerPreprocessor_111) .cse18 v_DerPreprocessor_91) .cse19 v_DerPreprocessor_89) .cse20 v_DerPreprocessor_87) .cse8 v_DerPreprocessor_83) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< .cse1 (+ v_ArrVal_673 2)) (< (select .cse25 .cse16) (+ v_ArrVal_675 2))))))) .cse26))) (or (and (or (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_88 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_102 Int) (v_DerPreprocessor_86 Int) (v_DerPreprocessor_98 Int) (v_prenex_218 Int)) (let ((.cse27 (store .cse9 .cse10 v_ArrVal_673))) (or (< .cse1 (+ v_ArrVal_673 2)) (< (select .cse27 .cse16) (+ v_ArrVal_675 2)) (= (select (store (store (store (store (store (store .cse27 .cse16 v_ArrVal_675) .cse17 v_DerPreprocessor_102) .cse18 v_DerPreprocessor_98) .cse6 v_DerPreprocessor_88) .cse7 v_DerPreprocessor_86) .cse8 v_prenex_218) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)))) .cse28) (or .cse29 (and (or .cse30 (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_99 Int) (v_DerPreprocessor_88 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_100 Int) (v_DerPreprocessor_86 Int) (v_prenex_218 Int)) (let ((.cse31 (store .cse9 .cse10 v_ArrVal_673))) (or (< .cse1 (+ v_ArrVal_673 2)) (= (select (store (store (store (store (store (store .cse31 .cse16 v_ArrVal_675) .cse4 v_DerPreprocessor_100) .cse5 v_DerPreprocessor_99) .cse6 v_DerPreprocessor_88) .cse7 v_DerPreprocessor_86) .cse8 v_prenex_218) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse31 .cse16) (+ v_ArrVal_675 2)))))) (or (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_99 Int) (v_DerPreprocessor_88 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_101 Int) (v_DerPreprocessor_86 Int) (v_prenex_218 Int)) (let ((.cse32 (store .cse9 .cse10 v_ArrVal_673))) (or (< .cse1 (+ v_ArrVal_673 2)) (< (select .cse32 .cse16) (+ v_ArrVal_675 2)) (= (select (store (store (store (store (store (store .cse32 .cse16 v_ArrVal_675) .cse17 v_DerPreprocessor_101) .cse5 v_DerPreprocessor_99) .cse6 v_DerPreprocessor_88) .cse7 v_DerPreprocessor_86) .cse8 v_prenex_218) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)))) .cse33)))) .cse34))))))) (or (let ((.cse38 (+ .cse35 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (let ((.cse37 (select .cse9 .cse38))) (and (or (and (or .cse13 (and (or (and (or .cse30 (forall ((v_DerPreprocessor_107 Int) (v_ArrVal_675 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_93 Int) (v_prenex_219 Int) (v_DerPreprocessor_85 Int)) (let ((.cse36 (store .cse9 .cse38 v_ArrVal_673))) (or (= (select (store (store (store (store (store (store .cse36 .cse3 v_ArrVal_675) .cse4 v_DerPreprocessor_107) .cse18 v_DerPreprocessor_93) .cse19 v_DerPreprocessor_89) .cse20 v_DerPreprocessor_85) .cse21 v_prenex_219) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse36 .cse3) (+ v_ArrVal_675 2)) (< .cse37 (+ v_ArrVal_673 2)))))) (or (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_108 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_93 Int) (v_prenex_219 Int) (v_DerPreprocessor_85 Int)) (let ((.cse39 (store .cse9 .cse38 v_ArrVal_673))) (or (= (select (store (store (store (store (store (store .cse39 .cse3 v_ArrVal_675) .cse17 v_DerPreprocessor_108) .cse18 v_DerPreprocessor_93) .cse19 v_DerPreprocessor_89) .cse20 v_DerPreprocessor_85) .cse21 v_prenex_219) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse39 .cse3) (+ v_ArrVal_675 2)) (< .cse37 (+ v_ArrVal_673 2))))) .cse33)) .cse28) (or (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_109 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_92 Int) (v_prenex_219 Int) (v_DerPreprocessor_85 Int)) (let ((.cse40 (store .cse9 .cse38 v_ArrVal_673))) (or (= (select (store (store (store (store (store (store .cse40 .cse3 v_ArrVal_675) .cse4 v_DerPreprocessor_109) .cse5 v_DerPreprocessor_92) .cse19 v_DerPreprocessor_89) .cse20 v_DerPreprocessor_85) .cse21 v_prenex_219) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse40 .cse3) (+ v_ArrVal_675 2)) (< .cse37 (+ v_ArrVal_673 2))))) .cse29))) (or (and (or (and (or .cse24 (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_88 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_97 Int) (v_DerPreprocessor_104 Int) (v_prenex_217 Int) (v_DerPreprocessor_85 Int)) (let ((.cse41 (store .cse9 .cse38 v_ArrVal_673))) (or (< (select .cse41 .cse3) (+ v_ArrVal_675 2)) (< .cse37 (+ v_ArrVal_673 2)) (= (select (store (store (store (store (store (store .cse41 .cse3 v_ArrVal_675) .cse4 v_DerPreprocessor_104) .cse5 v_DerPreprocessor_97) .cse6 v_DerPreprocessor_88) .cse20 v_DerPreprocessor_85) .cse21 v_prenex_217) |c_ULTIMATE.start_main_~a~0#1.offset|) 0))))) (or .cse22 (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_88 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_82 Int) (v_DerPreprocessor_95 Int) (v_DerPreprocessor_84 Int) (v_DerPreprocessor_106 Int)) (let ((.cse42 (store .cse9 .cse38 v_ArrVal_673))) (or (< (select .cse42 .cse3) (+ v_ArrVal_675 2)) (< .cse37 (+ v_ArrVal_673 2)) (= (select (store (store (store (store (store (store .cse42 .cse3 v_ArrVal_675) .cse4 v_DerPreprocessor_106) .cse5 v_DerPreprocessor_95) .cse6 v_DerPreprocessor_88) .cse7 v_DerPreprocessor_84) .cse21 v_DerPreprocessor_82) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)))))) .cse14) (or (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_99 Int) (v_DerPreprocessor_88 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_100 Int) (v_DerPreprocessor_86 Int) (v_prenex_218 Int)) (let ((.cse43 (store .cse9 .cse38 v_ArrVal_673))) (or (< (select .cse43 .cse3) (+ v_ArrVal_675 2)) (< .cse37 (+ v_ArrVal_673 2)) (= (select (store (store (store (store (store (store .cse43 .cse3 v_ArrVal_675) .cse4 v_DerPreprocessor_100) .cse5 v_DerPreprocessor_99) .cse6 v_DerPreprocessor_88) .cse7 v_DerPreprocessor_86) .cse8 v_prenex_218) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)))) .cse26)) .cse34)) .cse11) (or .cse12 (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_108 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_93 Int) (v_prenex_219 Int) (v_DerPreprocessor_85 Int)) (let ((.cse44 (store .cse9 .cse38 v_ArrVal_673))) (or (< (select .cse44 .cse16) (+ v_ArrVal_675 2)) (= (select (store (store (store (store (store (store .cse44 .cse16 v_ArrVal_675) .cse17 v_DerPreprocessor_108) .cse18 v_DerPreprocessor_93) .cse19 v_DerPreprocessor_89) .cse20 v_DerPreprocessor_85) .cse21 v_prenex_219) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< .cse37 (+ v_ArrVal_673 2))))))))) (< .cse0 2147483648)))))) is different from false [2023-12-18 18:39:51,132 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse66 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse63 (mod (+ 5 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse65 (mod (+ 6 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse64 (mod (+ 7 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse62 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse61 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4) 4294967296)) (.cse54 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse0 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse55 (* 8 .cse54)) (.cse59 (* .cse61 8)) (.cse60 (* .cse62 8)) (.cse56 (* .cse64 8)) (.cse57 (* .cse65 8)) (.cse58 (* .cse63 8)) (.cse53 (* .cse66 8))) (let ((.cse1 (< 2147483647 .cse66)) (.cse12 (+ .cse53 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse38 (< .cse66 2147483648)) (.cse2 (< .cse54 2147483648)) (.cse27 (< .cse63 2147483648)) (.cse23 (< 2147483647 .cse65)) (.cse26 (< .cse65 2147483648)) (.cse21 (< 2147483647 .cse64)) (.cse7 (+ .cse58 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse8 (+ .cse57 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse9 (+ .cse56 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse22 (< .cse64 2147483648)) (.cse13 (< 2147483647 .cse63)) (.cse34 (< 2147483647 .cse61)) (.cse29 (< 2147483647 .cse62)) (.cse30 (< .cse62 2147483648)) (.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse60)) (.cse6 (+ .cse59 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse4 (+ .cse55 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse32 (< .cse61 2147483648)) (.cse16 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse60)) (.cse17 (+ .cse59 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse18 (+ .cse58 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse19 (+ .cse57 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse20 (+ .cse56 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse15 (+ .cse55 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse35 (< 2147483647 .cse54)) (.cse36 (+ .cse53 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse39 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse41 (* .cse0 8))) (and (or (< 2147483647 .cse0) (let ((.cse11 (let ((.cse40 (+ .cse41 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse39 .cse40 (+ (select .cse39 .cse40) (- 2)))))) (and (or .cse1 (let ((.cse10 (select .cse11 .cse12))) (and (or .cse2 (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_99 Int) (v_DerPreprocessor_88 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_100 Int) (v_DerPreprocessor_86 Int) (v_prenex_218 Int)) (let ((.cse3 (store .cse11 .cse12 v_ArrVal_673))) (or (= (select (store (store (store (store (store (store .cse3 .cse4 v_ArrVal_675) .cse5 v_DerPreprocessor_100) .cse6 v_DerPreprocessor_99) .cse7 v_DerPreprocessor_88) .cse8 v_DerPreprocessor_86) .cse9 v_prenex_218) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< .cse10 (+ v_ArrVal_673 2)) (< (select .cse3 .cse4) (+ v_ArrVal_675 2)))))) (or (and (or .cse13 (and (or (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_108 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_93 Int) (v_prenex_219 Int) (v_DerPreprocessor_85 Int)) (let ((.cse14 (store .cse11 .cse12 v_ArrVal_673))) (or (< (select .cse14 .cse15) (+ v_ArrVal_675 2)) (< .cse10 (+ v_ArrVal_673 2)) (= (select (store (store (store (store (store (store .cse14 .cse15 v_ArrVal_675) .cse16 v_DerPreprocessor_108) .cse17 v_DerPreprocessor_93) .cse18 v_DerPreprocessor_89) .cse19 v_DerPreprocessor_85) .cse20 v_prenex_219) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)))) .cse21) (or .cse22 (and (or .cse23 (forall ((v_ArrVal_675 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_111 Int) (v_DerPreprocessor_83 Int) (v_DerPreprocessor_91 Int) (v_DerPreprocessor_87 Int)) (let ((.cse24 (store .cse11 .cse12 v_ArrVal_673))) (or (= (select (store (store (store (store (store (store .cse24 .cse15 v_ArrVal_675) .cse16 v_DerPreprocessor_111) .cse17 v_DerPreprocessor_91) .cse18 v_DerPreprocessor_89) .cse19 v_DerPreprocessor_87) .cse9 v_DerPreprocessor_83) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse24 .cse15) (+ v_ArrVal_675 2)) (< .cse10 (+ v_ArrVal_673 2)))))) (or (forall ((v_ArrVal_675 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_90 Int) (v_prenex_220 Int) (v_DerPreprocessor_110 Int) (v_DerPreprocessor_86 Int)) (let ((.cse25 (store .cse11 .cse12 v_ArrVal_673))) (or (= (select (store (store (store (store (store (store .cse25 .cse15 v_ArrVal_675) .cse16 v_DerPreprocessor_110) .cse17 v_DerPreprocessor_90) .cse18 v_DerPreprocessor_89) .cse8 v_DerPreprocessor_86) .cse9 v_prenex_220) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse25 .cse15) (+ v_ArrVal_675 2)) (< .cse10 (+ v_ArrVal_673 2))))) .cse26))))) (or .cse27 (and (or (and (or (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_99 Int) (v_DerPreprocessor_88 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_101 Int) (v_DerPreprocessor_86 Int) (v_prenex_218 Int)) (let ((.cse28 (store .cse11 .cse12 v_ArrVal_673))) (or (< (select .cse28 .cse15) (+ v_ArrVal_675 2)) (< .cse10 (+ v_ArrVal_673 2)) (= (select (store (store (store (store (store (store .cse28 .cse15 v_ArrVal_675) .cse16 v_DerPreprocessor_101) .cse6 v_DerPreprocessor_99) .cse7 v_DerPreprocessor_88) .cse8 v_DerPreprocessor_86) .cse9 v_prenex_218) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)))) .cse29) (or .cse30 (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_99 Int) (v_DerPreprocessor_88 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_100 Int) (v_DerPreprocessor_86 Int) (v_prenex_218 Int)) (let ((.cse31 (store .cse11 .cse12 v_ArrVal_673))) (or (< (select .cse31 .cse15) (+ v_ArrVal_675 2)) (= (select (store (store (store (store (store (store .cse31 .cse15 v_ArrVal_675) .cse5 v_DerPreprocessor_100) .cse6 v_DerPreprocessor_99) .cse7 v_DerPreprocessor_88) .cse8 v_DerPreprocessor_86) .cse9 v_prenex_218) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< .cse10 (+ v_ArrVal_673 2))))))) .cse32) (or (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_88 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_102 Int) (v_DerPreprocessor_86 Int) (v_DerPreprocessor_98 Int) (v_prenex_218 Int)) (let ((.cse33 (store .cse11 .cse12 v_ArrVal_673))) (or (< (select .cse33 .cse15) (+ v_ArrVal_675 2)) (< .cse10 (+ v_ArrVal_673 2)) (= (select (store (store (store (store (store (store .cse33 .cse15 v_ArrVal_675) .cse16 v_DerPreprocessor_102) .cse17 v_DerPreprocessor_98) .cse7 v_DerPreprocessor_88) .cse8 v_DerPreprocessor_86) .cse9 v_prenex_218) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)))) .cse34)))) .cse35)))) (or (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_99 Int) (v_DerPreprocessor_88 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_100 Int) (v_DerPreprocessor_86 Int) (v_prenex_218 Int)) (let ((.cse37 (store .cse11 .cse36 v_ArrVal_673))) (or (< (select .cse11 .cse36) (+ v_ArrVal_673 2)) (< (select .cse37 .cse4) (+ v_ArrVal_675 2)) (= (select (store (store (store (store (store (store .cse37 .cse4 v_ArrVal_675) .cse5 v_DerPreprocessor_100) .cse6 v_DerPreprocessor_99) .cse7 v_DerPreprocessor_88) .cse8 v_DerPreprocessor_86) .cse9 v_prenex_218) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)))) .cse38)))) (or (let ((.cse43 (let ((.cse52 (+ .cse41 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (store .cse39 .cse52 (+ (- 2) (select .cse39 .cse52)))))) (and (or .cse1 (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_108 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_93 Int) (v_prenex_219 Int) (v_DerPreprocessor_85 Int)) (let ((.cse42 (store .cse43 .cse12 v_ArrVal_673))) (or (< (select .cse42 .cse15) (+ v_ArrVal_675 2)) (= (select (store (store (store (store (store (store .cse42 .cse15 v_ArrVal_675) .cse16 v_DerPreprocessor_108) .cse17 v_DerPreprocessor_93) .cse18 v_DerPreprocessor_89) .cse19 v_DerPreprocessor_85) .cse20 v_prenex_219) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse43 .cse12) (+ v_ArrVal_673 2)))))) (or .cse38 (let ((.cse45 (select .cse43 .cse36))) (and (or .cse2 (and (or .cse27 (and (or (and (or .cse23 (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_88 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_97 Int) (v_DerPreprocessor_104 Int) (v_prenex_217 Int) (v_DerPreprocessor_85 Int)) (let ((.cse44 (store .cse43 .cse36 v_ArrVal_673))) (or (< (select .cse44 .cse4) (+ v_ArrVal_675 2)) (< .cse45 (+ v_ArrVal_673 2)) (= (select (store (store (store (store (store (store .cse44 .cse4 v_ArrVal_675) .cse5 v_DerPreprocessor_104) .cse6 v_DerPreprocessor_97) .cse7 v_DerPreprocessor_88) .cse19 v_DerPreprocessor_85) .cse20 v_prenex_217) |c_ULTIMATE.start_main_~a~0#1.offset|) 0))))) (or (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_88 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_82 Int) (v_DerPreprocessor_95 Int) (v_DerPreprocessor_84 Int) (v_DerPreprocessor_106 Int)) (let ((.cse46 (store .cse43 .cse36 v_ArrVal_673))) (or (< (select .cse46 .cse4) (+ v_ArrVal_675 2)) (< .cse45 (+ v_ArrVal_673 2)) (= (select (store (store (store (store (store (store .cse46 .cse4 v_ArrVal_675) .cse5 v_DerPreprocessor_106) .cse6 v_DerPreprocessor_95) .cse7 v_DerPreprocessor_88) .cse8 v_DerPreprocessor_84) .cse20 v_DerPreprocessor_82) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)))) .cse26)) .cse21) (or (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_99 Int) (v_DerPreprocessor_88 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_100 Int) (v_DerPreprocessor_86 Int) (v_prenex_218 Int)) (let ((.cse47 (store .cse43 .cse36 v_ArrVal_673))) (or (= (select (store (store (store (store (store (store .cse47 .cse4 v_ArrVal_675) .cse5 v_DerPreprocessor_100) .cse6 v_DerPreprocessor_99) .cse7 v_DerPreprocessor_88) .cse8 v_DerPreprocessor_86) .cse9 v_prenex_218) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse47 .cse4) (+ v_ArrVal_675 2)) (< .cse45 (+ v_ArrVal_673 2))))) .cse22))) (or .cse13 (and (or .cse34 (and (or (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_108 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_93 Int) (v_prenex_219 Int) (v_DerPreprocessor_85 Int)) (let ((.cse48 (store .cse43 .cse36 v_ArrVal_673))) (or (< (select .cse48 .cse4) (+ v_ArrVal_675 2)) (< .cse45 (+ v_ArrVal_673 2)) (= (select (store (store (store (store (store (store .cse48 .cse4 v_ArrVal_675) .cse16 v_DerPreprocessor_108) .cse17 v_DerPreprocessor_93) .cse18 v_DerPreprocessor_89) .cse19 v_DerPreprocessor_85) .cse20 v_prenex_219) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)))) .cse29) (or .cse30 (forall ((v_DerPreprocessor_107 Int) (v_ArrVal_675 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_93 Int) (v_prenex_219 Int) (v_DerPreprocessor_85 Int)) (let ((.cse49 (store .cse43 .cse36 v_ArrVal_673))) (or (= (select (store (store (store (store (store (store .cse49 .cse4 v_ArrVal_675) .cse5 v_DerPreprocessor_107) .cse17 v_DerPreprocessor_93) .cse18 v_DerPreprocessor_89) .cse19 v_DerPreprocessor_85) .cse20 v_prenex_219) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse49 .cse4) (+ v_ArrVal_675 2)) (< .cse45 (+ v_ArrVal_673 2)))))))) (or (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_109 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_92 Int) (v_prenex_219 Int) (v_DerPreprocessor_85 Int)) (let ((.cse50 (store .cse43 .cse36 v_ArrVal_673))) (or (= (select (store (store (store (store (store (store .cse50 .cse4 v_ArrVal_675) .cse5 v_DerPreprocessor_109) .cse6 v_DerPreprocessor_92) .cse18 v_DerPreprocessor_89) .cse19 v_DerPreprocessor_85) .cse20 v_prenex_219) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse50 .cse4) (+ v_ArrVal_675 2)) (< .cse45 (+ v_ArrVal_673 2))))) .cse32))))) (or (forall ((v_ArrVal_675 Int) (v_DerPreprocessor_108 Int) (v_ArrVal_673 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_93 Int) (v_prenex_219 Int) (v_DerPreprocessor_85 Int)) (let ((.cse51 (store .cse43 .cse36 v_ArrVal_673))) (or (= (select (store (store (store (store (store (store .cse51 .cse15 v_ArrVal_675) .cse16 v_DerPreprocessor_108) .cse17 v_DerPreprocessor_93) .cse18 v_DerPreprocessor_89) .cse19 v_DerPreprocessor_85) .cse20 v_prenex_219) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (< (select .cse51 .cse15) (+ v_ArrVal_675 2)) (< .cse45 (+ v_ArrVal_673 2))))) .cse35)))))) (< .cse0 2147483648)))))) is different from false [2023-12-18 18:40:05,670 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 52 treesize of output 48 [2023-12-18 18:40:05,694 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:40:05,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 95 [2023-12-18 18:40:16,593 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:40:16,762 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 45018931597 treesize of output 45002137328 [2023-12-18 18:40:24,715 WARN L293 SmtUtils]: Spent 7.68s on a formula simplification. DAG size of input: 96370 DAG size of output: 744 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-18 18:40:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2023-12-18 18:40:33,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:40:33,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675569241] [2023-12-18 18:40:33,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:40:33,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316401865] [2023-12-18 18:40:33,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316401865] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:40:33,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:40:33,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 39 [2023-12-18 18:40:33,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701486957] [2023-12-18 18:40:33,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:40:33,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-18 18:40:33,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:40:33,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-18 18:40:33,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1103, Unknown=2, NotChecked=142, Total=1482 [2023-12-18 18:40:33,243 INFO L87 Difference]: Start difference. First operand 135 states and 154 transitions. Second operand has 39 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:50,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:40:50,228 INFO L93 Difference]: Finished difference Result 313 states and 362 transitions. [2023-12-18 18:40:50,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-18 18:40:50,228 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-18 18:40:50,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:40:50,229 INFO L225 Difference]: With dead ends: 313 [2023-12-18 18:40:50,229 INFO L226 Difference]: Without dead ends: 311 [2023-12-18 18:40:50,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=445, Invalid=2317, Unknown=2, NotChecked=206, Total=2970 [2023-12-18 18:40:50,231 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 240 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 319 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-18 18:40:50,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 367 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 714 Invalid, 0 Unknown, 319 Unchecked, 7.6s Time] [2023-12-18 18:40:50,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-18 18:40:50,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 164. [2023-12-18 18:40:50,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.2024539877300613) internal successors, (196), 163 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:50,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 196 transitions. [2023-12-18 18:40:50,358 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 196 transitions. Word has length 25 [2023-12-18 18:40:50,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:40:50,358 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 196 transitions. [2023-12-18 18:40:50,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:50,358 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 196 transitions. [2023-12-18 18:40:50,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-18 18:40:50,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:40:50,359 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:40:50,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-18 18:40:50,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:40:50,565 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:40:50,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:40:50,566 INFO L85 PathProgramCache]: Analyzing trace with hash -559638648, now seen corresponding path program 6 times [2023-12-18 18:40:50,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:40:50,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180438752] [2023-12-18 18:40:50,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:40:50,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:40:50,573 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:40:50,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186241366] [2023-12-18 18:40:50,573 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 18:40:50,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:40:50,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:40:50,575 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:40:50,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-18 18:40:51,837 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-18 18:40:51,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:40:51,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-18 18:40:51,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:40:52,252 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-18 18:40:52,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:40:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-18 18:40:52,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:40:52,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180438752] [2023-12-18 18:40:52,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:40:52,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186241366] [2023-12-18 18:40:52,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186241366] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:40:52,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:40:52,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2023-12-18 18:40:52,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641933593] [2023-12-18 18:40:52,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:40:52,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-18 18:40:52,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:40:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-18 18:40:52,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2023-12-18 18:40:52,616 INFO L87 Difference]: Start difference. First operand 164 states and 196 transitions. Second operand has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 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) [2023-12-18 18:40:54,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:40:54,039 INFO L93 Difference]: Finished difference Result 243 states and 282 transitions. [2023-12-18 18:40:54,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-18 18:40:54,044 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 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) Word has length 26 [2023-12-18 18:40:54,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:40:54,045 INFO L225 Difference]: With dead ends: 243 [2023-12-18 18:40:54,045 INFO L226 Difference]: Without dead ends: 226 [2023-12-18 18:40:54,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=290, Invalid=900, Unknown=0, NotChecked=0, Total=1190 [2023-12-18 18:40:54,045 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 110 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 18:40:54,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 182 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 18:40:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-18 18:40:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 158. [2023-12-18 18:40:54,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.197452229299363) internal successors, (188), 157 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:40:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2023-12-18 18:40:54,165 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 26 [2023-12-18 18:40:54,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:40:54,165 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2023-12-18 18:40:54,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 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) [2023-12-18 18:40:54,165 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2023-12-18 18:40:54,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-18 18:40:54,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:40:54,166 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:40:54,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-18 18:40:54,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:40:54,369 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:40:54,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:40:54,369 INFO L85 PathProgramCache]: Analyzing trace with hash 180096581, now seen corresponding path program 7 times [2023-12-18 18:40:54,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:40:54,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071757328] [2023-12-18 18:40:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:40:54,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:40:54,376 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:40:54,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207002352] [2023-12-18 18:40:54,376 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 18:40:54,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:40:54,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:40:54,377 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:40:54,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-18 18:40:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:40:54,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-18 18:40:54,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:40:54,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-18 18:40:54,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:40:54,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22 [2023-12-18 18:40:54,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:40:54,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 24 [2023-12-18 18:40:54,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:40:54,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-12-18 18:40:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:40:55,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:41:17,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2023-12-18 18:41:17,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:41:17,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 95 [2023-12-18 18:41:17,549 INFO L349 Elim1Store]: treesize reduction 23, result has 39.5 percent of original size [2023-12-18 18:41:17,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 47 [2023-12-18 18:41:17,678 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:41:17,679 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 24 treesize of output 22 [2023-12-18 18:41:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:41:17,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:41:17,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071757328] [2023-12-18 18:41:17,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:41:17,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207002352] [2023-12-18 18:41:17,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207002352] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:41:17,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:41:17,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 28 [2023-12-18 18:41:17,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530238256] [2023-12-18 18:41:17,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:41:17,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-18 18:41:17,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:41:17,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-18 18:41:17,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=660, Unknown=4, NotChecked=0, Total=756 [2023-12-18 18:41:17,750 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand has 28 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 28 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:41:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:41:24,862 INFO L93 Difference]: Finished difference Result 201 states and 235 transitions. [2023-12-18 18:41:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-18 18:41:24,863 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 28 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-18 18:41:24,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:41:24,863 INFO L225 Difference]: With dead ends: 201 [2023-12-18 18:41:24,863 INFO L226 Difference]: Without dead ends: 181 [2023-12-18 18:41:24,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 26.1s TimeCoverageRelationStatistics Valid=176, Invalid=1460, Unknown=4, NotChecked=0, Total=1640 [2023-12-18 18:41:24,864 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 28 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-18 18:41:24,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 186 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-18 18:41:24,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-18 18:41:24,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 143. [2023-12-18 18:41:24,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.2112676056338028) internal successors, (172), 142 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:41:24,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 172 transitions. [2023-12-18 18:41:24,991 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 172 transitions. Word has length 26 [2023-12-18 18:41:24,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:41:24,991 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 172 transitions. [2023-12-18 18:41:24,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 28 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:41:24,991 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 172 transitions. [2023-12-18 18:41:24,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-18 18:41:24,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:41:24,992 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:41:25,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-18 18:41:25,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:41:25,200 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:41:25,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:41:25,201 INFO L85 PathProgramCache]: Analyzing trace with hash -845597480, now seen corresponding path program 8 times [2023-12-18 18:41:25,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:41:25,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300840122] [2023-12-18 18:41:25,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:41:25,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:41:25,216 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:41:25,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953809654] [2023-12-18 18:41:25,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 18:41:25,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:41:25,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:41:25,217 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:41:25,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-18 18:41:25,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 18:41:25,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:41:25,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-18 18:41:25,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:41:25,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-18 18:41:25,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:41:25,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:41:25,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:41:25,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-18 18:41:25,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:41:26,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-12-18 18:41:26,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:41:26,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:41:26,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:41:26,718 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:41:26,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:41:38,423 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 52 treesize of output 48 [2023-12-18 18:41:38,472 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:41:38,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 95 [2023-12-18 18:41:39,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:41:39,002 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 2747 treesize of output 2666 [2023-12-18 18:41:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:41:39,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:41:39,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300840122] [2023-12-18 18:41:39,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:41:39,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953809654] [2023-12-18 18:41:39,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953809654] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:41:39,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:41:39,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 35 [2023-12-18 18:41:39,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646555711] [2023-12-18 18:41:39,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:41:39,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-18 18:41:39,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:41:39,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-18 18:41:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1045, Unknown=0, NotChecked=0, Total=1190 [2023-12-18 18:41:39,424 INFO L87 Difference]: Start difference. First operand 143 states and 172 transitions. Second operand has 35 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:18,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:42:18,821 INFO L93 Difference]: Finished difference Result 296 states and 344 transitions. [2023-12-18 18:42:18,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-18 18:42:18,821 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 0 states have call successors, (0), 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 [2023-12-18 18:42:18,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:42:18,822 INFO L225 Difference]: With dead ends: 296 [2023-12-18 18:42:18,822 INFO L226 Difference]: Without dead ends: 294 [2023-12-18 18:42:18,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 41.4s TimeCoverageRelationStatistics Valid=529, Invalid=3893, Unknown=0, NotChecked=0, Total=4422 [2023-12-18 18:42:18,823 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 163 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-18 18:42:18,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 286 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-18 18:42:18,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-18 18:42:18,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 179. [2023-12-18 18:42:18,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.2078651685393258) internal successors, (215), 178 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:18,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 215 transitions. [2023-12-18 18:42:18,992 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 215 transitions. Word has length 27 [2023-12-18 18:42:18,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:42:18,992 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 215 transitions. [2023-12-18 18:42:18,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:18,992 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 215 transitions. [2023-12-18 18:42:18,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-18 18:42:18,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:42:18,992 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:42:19,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-18 18:42:19,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:42:19,199 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:42:19,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:42:19,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1960601770, now seen corresponding path program 9 times [2023-12-18 18:42:19,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:42:19,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723754610] [2023-12-18 18:42:19,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:42:19,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:42:19,205 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:42:19,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488563480] [2023-12-18 18:42:19,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 18:42:19,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:42:19,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:42:19,207 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:42:19,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-18 18:42:20,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-18 18:42:20,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:42:20,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-18 18:42:20,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:42:20,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-18 18:42:20,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:42:20,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-18 18:42:20,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:42:20,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-18 18:42:20,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2023-12-18 18:42:20,762 INFO L349 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2023-12-18 18:42:20,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 106 treesize of output 166 [2023-12-18 18:42:20,924 INFO L349 Elim1Store]: treesize reduction 30, result has 50.0 percent of original size [2023-12-18 18:42:20,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 114 treesize of output 65 [2023-12-18 18:42:21,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 82 [2023-12-18 18:42:21,062 INFO L349 Elim1Store]: treesize reduction 31, result has 3.1 percent of original size [2023-12-18 18:42:21,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 132 [2023-12-18 18:42:21,227 INFO L349 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2023-12-18 18:42:21,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 56 [2023-12-18 18:42:22,027 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:42:22,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:42:33,491 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 52 treesize of output 48 [2023-12-18 18:42:33,513 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 18:42:33,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 95 [2023-12-18 18:42:34,150 INFO L349 Elim1Store]: treesize reduction 20, result has 45.9 percent of original size [2023-12-18 18:42:34,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 504 treesize of output 466 [2023-12-18 18:42:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:42:35,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:42:35,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723754610] [2023-12-18 18:42:35,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:42:35,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488563480] [2023-12-18 18:42:35,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488563480] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:42:35,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:42:35,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2023-12-18 18:42:35,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270575151] [2023-12-18 18:42:35,658 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:42:35,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-18 18:42:35,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:42:35,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-18 18:42:35,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1358, Unknown=0, NotChecked=0, Total=1560 [2023-12-18 18:42:35,659 INFO L87 Difference]: Start difference. First operand 179 states and 215 transitions. Second operand has 40 states, 40 states have (on average 1.375) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:45,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:42:45,129 INFO L93 Difference]: Finished difference Result 219 states and 256 transitions. [2023-12-18 18:42:45,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-18 18:42:45,129 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.375) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-18 18:42:45,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:42:45,131 INFO L225 Difference]: With dead ends: 219 [2023-12-18 18:42:45,131 INFO L226 Difference]: Without dead ends: 217 [2023-12-18 18:42:45,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1762 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=872, Invalid=6100, Unknown=0, NotChecked=0, Total=6972 [2023-12-18 18:42:45,133 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 168 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-18 18:42:45,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 217 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-18 18:42:45,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-18 18:42:45,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 182. [2023-12-18 18:42:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.2044198895027625) internal successors, (218), 181 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 218 transitions. [2023-12-18 18:42:45,307 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 218 transitions. Word has length 28 [2023-12-18 18:42:45,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:42:45,307 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 218 transitions. [2023-12-18 18:42:45,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.375) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 218 transitions. [2023-12-18 18:42:45,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-18 18:42:45,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:42:45,308 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:42:45,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-18 18:42:45,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:42:45,519 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:42:45,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:42:45,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1723118844, now seen corresponding path program 10 times [2023-12-18 18:42:45,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:42:45,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169244872] [2023-12-18 18:42:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:42:45,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:42:45,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:42:45,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739713227] [2023-12-18 18:42:45,527 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 18:42:45,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:42:45,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:42:45,528 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:42:45,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-18 18:42:45,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 18:42:45,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:42:45,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-18 18:42:45,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:42:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 18:42:46,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:42:47,036 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 18:42:47,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:42:47,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169244872] [2023-12-18 18:42:47,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:42:47,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739713227] [2023-12-18 18:42:47,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739713227] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:42:47,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 18:42:47,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2023-12-18 18:42:47,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918849496] [2023-12-18 18:42:47,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 18:42:47,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-18 18:42:47,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:42:47,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-18 18:42:47,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2023-12-18 18:42:47,038 INFO L87 Difference]: Start difference. First operand 182 states and 218 transitions. Second operand has 30 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:49,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:42:49,035 INFO L93 Difference]: Finished difference Result 283 states and 322 transitions. [2023-12-18 18:42:49,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-18 18:42:49,036 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 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 29 [2023-12-18 18:42:49,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:42:49,037 INFO L225 Difference]: With dead ends: 283 [2023-12-18 18:42:49,037 INFO L226 Difference]: Without dead ends: 245 [2023-12-18 18:42:49,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 18 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=563, Invalid=1887, Unknown=0, NotChecked=0, Total=2450 [2023-12-18 18:42:49,038 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 178 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-18 18:42:49,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 339 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-18 18:42:49,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-18 18:42:49,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 164. [2023-12-18 18:42:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.1840490797546013) internal successors, (193), 163 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 193 transitions. [2023-12-18 18:42:49,193 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 193 transitions. Word has length 29 [2023-12-18 18:42:49,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:42:49,193 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 193 transitions. [2023-12-18 18:42:49,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:42:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 193 transitions. [2023-12-18 18:42:49,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-18 18:42:49,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:42:49,194 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 18:42:49,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-18 18:42:49,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:42:49,400 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:42:49,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:42:49,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1418921930, now seen corresponding path program 11 times [2023-12-18 18:42:49,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:42:49,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354898643] [2023-12-18 18:42:49,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:42:49,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:42:49,407 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 18:42:49,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041766726] [2023-12-18 18:42:49,408 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 18:42:49,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:42:49,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:42:49,409 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:42:49,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process Received shutdown request... [2023-12-18 18:49:46,823 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 18:49:46,856 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 18:49:48,024 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-18 18:49:48,056 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forcibly destroying the process [2023-12-18 18:49:48,069 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-18 18:49:48,070 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-18 18:49:48,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-18 18:49:48,077 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forcibly destroying the process [2023-12-18 18:49:48,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-18 18:49:48,078 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 31 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-18 18:49:48,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 137 [2023-12-18 18:49:48,081 INFO L445 BasicCegarLoop]: Path program histogram: [11, 10, 2, 1, 1] [2023-12-18 18:49:48,083 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 18:49:48,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 06:49:48 BoogieIcfgContainer [2023-12-18 18:49:48,084 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 18:49:48,084 INFO L158 Benchmark]: Toolchain (without parser) took 880555.17ms. Allocated memory was 182.5MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 147.2MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-18 18:49:48,084 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 182.5MB. Free memory is still 140.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 18:49:48,085 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.84ms. Allocated memory is still 182.5MB. Free memory was 147.2MB in the beginning and 135.6MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-18 18:49:48,085 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.45ms. Allocated memory is still 182.5MB. Free memory was 135.6MB in the beginning and 134.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-18 18:49:48,085 INFO L158 Benchmark]: Boogie Preprocessor took 46.10ms. Allocated memory is still 182.5MB. Free memory was 134.1MB in the beginning and 132.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 18:49:48,085 INFO L158 Benchmark]: RCFGBuilder took 286.97ms. Allocated memory is still 182.5MB. Free memory was 132.1MB in the beginning and 118.9MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-18 18:49:48,085 INFO L158 Benchmark]: TraceAbstraction took 880019.40ms. Allocated memory was 182.5MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 118.4MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-18 18:49:48,085 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 182.5MB. Free memory is still 140.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 161.84ms. Allocated memory is still 182.5MB. Free memory was 147.2MB in the beginning and 135.6MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.45ms. Allocated memory is still 182.5MB. Free memory was 135.6MB in the beginning and 134.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.10ms. Allocated memory is still 182.5MB. Free memory was 134.1MB in the beginning and 132.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 286.97ms. Allocated memory is still 182.5MB. Free memory was 132.1MB in the beginning and 118.9MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 880019.40ms. Allocated memory was 182.5MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 118.4MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 8). Cancelled while NwaCegarLoop was analyzing trace of length 31 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 880.0s, OverallIterations: 25, TraceHistogramMax: 9, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 143.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 2710 SdHoareTripleChecker+Valid, 32.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2710 mSDsluCounter, 3269 SdHoareTripleChecker+Invalid, 31.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 405 IncrementalHoareTripleChecker+Unchecked, 2833 mSDsCounter, 993 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6603 IncrementalHoareTripleChecker+Invalid, 8002 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 993 mSolverCounterUnsat, 436 mSDtfsCounter, 6603 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1218 GetRequests, 336 SyntacticMatches, 52 SemanticMatches, 830 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 11106 ImplicationChecksByTransitivity, 251.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=182occurred in iteration=23, InterpolantAutomatonStates: 632, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 1092 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 108.5s SatisfiabilityAnalysisTime, 201.2s InterpolantComputationTime, 471 NumberOfCodeBlocks, 469 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 832 ConstructedInterpolants, 65 QuantifiedInterpolants, 41743 SizeOfPredicates, 162 NumberOfNonLiveVariables, 3199 ConjunctsInSsa, 709 ConjunctsInUnsatCore, 45 InterpolantComputations, 3 PerfectInterpolantSequences, 415/1317 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