/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/heap-data/min_max.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 17:15:22,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 17:15:22,103 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 17:15:22,107 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 17:15:22,108 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 17:15:22,134 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 17:15:22,135 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 17:15:22,135 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 17:15:22,217 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 17:15:22,221 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 17:15:22,221 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 17:15:22,221 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 17:15:22,222 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 17:15:22,223 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 17:15:22,223 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 17:15:22,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 17:15:22,224 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 17:15:22,224 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 17:15:22,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 17:15:22,224 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 17:15:22,225 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 17:15:22,225 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 17:15:22,225 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 17:15:22,225 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 17:15:22,225 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 17:15:22,226 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 17:15:22,226 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 17:15:22,226 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 17:15:22,227 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 17:15:22,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 17:15:22,228 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 17:15:22,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 17:15:22,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 17:15:22,228 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 17:15:22,228 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 17:15:22,228 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 17:15:22,229 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 17:15:22,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 17:15:22,229 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 17:15:22,229 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 17:15:22,229 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 17:15:22,229 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 17:15:22,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 17:15:22,230 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 17:15:22,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 17:15:22,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 17:15:22,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 17:15:22,463 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 17:15:22,463 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 17:15:22,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/min_max.i [2023-12-19 17:15:23,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 17:15:23,784 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 17:15:23,785 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/min_max.i [2023-12-19 17:15:23,800 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a77d5aca/cdb2e7755ebb40fcb763f738dfc5f95f/FLAG13707fe2a [2023-12-19 17:15:23,810 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a77d5aca/cdb2e7755ebb40fcb763f738dfc5f95f [2023-12-19 17:15:23,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 17:15:23,813 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 17:15:23,814 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 17:15:23,814 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 17:15:23,818 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 17:15:23,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:15:23" (1/1) ... [2023-12-19 17:15:23,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b6239a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:23, skipping insertion in model container [2023-12-19 17:15:23,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:15:23" (1/1) ... [2023-12-19 17:15:23,850 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 17:15:24,097 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-data/min_max.i[23535,23548] [2023-12-19 17:15:24,100 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-data/min_max.i[23590,23603] [2023-12-19 17:15:24,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 17:15:24,113 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 17:15:24,146 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-data/min_max.i[23535,23548] [2023-12-19 17:15:24,147 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-data/min_max.i[23590,23603] [2023-12-19 17:15:24,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 17:15:24,170 INFO L206 MainTranslator]: Completed translation [2023-12-19 17:15:24,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:24 WrapperNode [2023-12-19 17:15:24,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 17:15:24,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 17:15:24,172 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 17:15:24,172 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 17:15:24,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:24" (1/1) ... [2023-12-19 17:15:24,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:24" (1/1) ... [2023-12-19 17:15:24,214 INFO L138 Inliner]: procedures = 121, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 61 [2023-12-19 17:15:24,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 17:15:24,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 17:15:24,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 17:15:24,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 17:15:24,224 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:24" (1/1) ... [2023-12-19 17:15:24,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:24" (1/1) ... [2023-12-19 17:15:24,228 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:24" (1/1) ... [2023-12-19 17:15:24,238 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2023-12-19 17:15:24,238 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:24" (1/1) ... [2023-12-19 17:15:24,238 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:24" (1/1) ... [2023-12-19 17:15:24,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:24" (1/1) ... [2023-12-19 17:15:24,257 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:24" (1/1) ... [2023-12-19 17:15:24,259 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:24" (1/1) ... [2023-12-19 17:15:24,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:24" (1/1) ... [2023-12-19 17:15:24,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 17:15:24,262 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 17:15:24,262 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 17:15:24,263 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 17:15:24,263 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:24" (1/1) ... [2023-12-19 17:15:24,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 17:15:24,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:24,297 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) [2023-12-19 17:15:24,299 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 [2023-12-19 17:15:24,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-19 17:15:24,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-19 17:15:24,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-19 17:15:24,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-19 17:15:24,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-19 17:15:24,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 17:15:24,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-12-19 17:15:24,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-12-19 17:15:24,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-12-19 17:15:24,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-12-19 17:15:24,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 17:15:24,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 17:15:24,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 17:15:24,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 17:15:24,412 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 17:15:24,414 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 17:15:24,538 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 17:15:24,565 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 17:15:24,565 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 17:15:24,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:15:24 BoogieIcfgContainer [2023-12-19 17:15:24,566 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 17:15:24,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 17:15:24,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 17:15:24,571 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 17:15:24,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 05:15:23" (1/3) ... [2023-12-19 17:15:24,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9813e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:15:24, skipping insertion in model container [2023-12-19 17:15:24,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:24" (2/3) ... [2023-12-19 17:15:24,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9813e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:15:24, skipping insertion in model container [2023-12-19 17:15:24,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:15:24" (3/3) ... [2023-12-19 17:15:24,573 INFO L112 eAbstractionObserver]: Analyzing ICFG min_max.i [2023-12-19 17:15:24,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 17:15:24,591 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 17:15:24,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 17:15:24,627 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;@37a20a7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 17:15:24,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 17:15:24,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 16 states have (on average 1.625) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:24,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-19 17:15:24,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:24,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-19 17:15:24,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:24,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:24,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1577035960, now seen corresponding path program 1 times [2023-12-19 17:15:24,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:24,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191943235] [2023-12-19 17:15:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:24,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:24,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:24,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191943235] [2023-12-19 17:15:24,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191943235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:15:24,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:15:24,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 17:15:24,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724679158] [2023-12-19 17:15:24,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:15:24,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 17:15:24,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:24,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 17:15:24,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 17:15:24,830 INFO L87 Difference]: Start difference. First operand has 19 states, 16 states have (on average 1.625) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:24,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:24,854 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2023-12-19 17:15:24,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 17:15:24,856 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-19 17:15:24,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:24,863 INFO L225 Difference]: With dead ends: 31 [2023-12-19 17:15:24,863 INFO L226 Difference]: Without dead ends: 17 [2023-12-19 17:15:24,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 17:15:24,870 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:24,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:15:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-19 17:15:24,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-19 17:15:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2023-12-19 17:15:24,922 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 6 [2023-12-19 17:15:24,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:24,922 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2023-12-19 17:15:24,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:24,923 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-12-19 17:15:24,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-19 17:15:24,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:24,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:24,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 17:15:24,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:24,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:24,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2031539211, now seen corresponding path program 1 times [2023-12-19 17:15:24,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:24,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604741797] [2023-12-19 17:15:24,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:24,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:25,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:25,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604741797] [2023-12-19 17:15:25,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604741797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:15:25,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:15:25,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 17:15:25,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236472467] [2023-12-19 17:15:25,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:15:25,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 17:15:25,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:25,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 17:15:25,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 17:15:25,111 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:25,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:25,157 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2023-12-19 17:15:25,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 17:15:25,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-19 17:15:25,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:25,158 INFO L225 Difference]: With dead ends: 30 [2023-12-19 17:15:25,158 INFO L226 Difference]: Without dead ends: 19 [2023-12-19 17:15:25,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 17:15:25,160 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:25,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 48 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:15:25,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-19 17:15:25,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-19 17:15:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 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) [2023-12-19 17:15:25,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2023-12-19 17:15:25,166 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 7 [2023-12-19 17:15:25,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:25,166 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2023-12-19 17:15:25,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:25,167 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2023-12-19 17:15:25,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-19 17:15:25,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:25,167 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:25,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 17:15:25,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:25,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:25,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1475214358, now seen corresponding path program 1 times [2023-12-19 17:15:25,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:25,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516552617] [2023-12-19 17:15:25,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:25,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:25,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:25,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516552617] [2023-12-19 17:15:25,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516552617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:15:25,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:15:25,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 17:15:25,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126280200] [2023-12-19 17:15:25,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:15:25,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 17:15:25,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:25,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 17:15:25,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 17:15:25,419 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2023-12-19 17:15:25,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:25,509 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2023-12-19 17:15:25,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 17:15:25,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-19 17:15:25,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:25,511 INFO L225 Difference]: With dead ends: 28 [2023-12-19 17:15:25,511 INFO L226 Difference]: Without dead ends: 26 [2023-12-19 17:15:25,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 17:15:25,517 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 25 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:25,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 45 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:15:25,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-19 17:15:25,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2023-12-19 17:15:25,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:25,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2023-12-19 17:15:25,526 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2023-12-19 17:15:25,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:25,526 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2023-12-19 17:15:25,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2023-12-19 17:15:25,527 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-12-19 17:15:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-19 17:15:25,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:25,527 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:25,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 17:15:25,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:25,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash 341915960, now seen corresponding path program 1 times [2023-12-19 17:15:25,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:25,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153907002] [2023-12-19 17:15:25,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:25,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:25,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:25,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153907002] [2023-12-19 17:15:25,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153907002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:15:25,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:15:25,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 17:15:25,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96492005] [2023-12-19 17:15:25,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:15:25,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 17:15:25,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:25,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 17:15:25,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 17:15:25,795 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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) [2023-12-19 17:15:25,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:25,934 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2023-12-19 17:15:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 17:15:25,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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) Word has length 15 [2023-12-19 17:15:25,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:25,936 INFO L225 Difference]: With dead ends: 41 [2023-12-19 17:15:25,936 INFO L226 Difference]: Without dead ends: 39 [2023-12-19 17:15:25,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-19 17:15:25,944 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:25,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 54 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:15:25,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-19 17:15:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2023-12-19 17:15:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 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) [2023-12-19 17:15:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-12-19 17:15:25,956 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 15 [2023-12-19 17:15:25,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:25,957 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-12-19 17:15:25,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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) [2023-12-19 17:15:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-12-19 17:15:25,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-19 17:15:25,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:25,958 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:25,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 17:15:25,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:25,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:25,959 INFO L85 PathProgramCache]: Analyzing trace with hash -51111050, now seen corresponding path program 1 times [2023-12-19 17:15:25,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:25,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154636253] [2023-12-19 17:15:25,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:25,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:26,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:26,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:26,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154636253] [2023-12-19 17:15:26,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154636253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:15:26,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:15:26,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 17:15:26,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511359709] [2023-12-19 17:15:26,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:15:26,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 17:15:26,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:26,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 17:15:26,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 17:15:26,068 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 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) [2023-12-19 17:15:26,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:26,138 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2023-12-19 17:15:26,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 17:15:26,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 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) Word has length 15 [2023-12-19 17:15:26,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:26,145 INFO L225 Difference]: With dead ends: 58 [2023-12-19 17:15:26,145 INFO L226 Difference]: Without dead ends: 32 [2023-12-19 17:15:26,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-19 17:15:26,148 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:26,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:15:26,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-19 17:15:26,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-19 17:15:26,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:26,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2023-12-19 17:15:26,156 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 15 [2023-12-19 17:15:26,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:26,156 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2023-12-19 17:15:26,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 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) [2023-12-19 17:15:26,157 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2023-12-19 17:15:26,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-19 17:15:26,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:26,157 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:26,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 17:15:26,158 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:26,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:26,158 INFO L85 PathProgramCache]: Analyzing trace with hash -309276488, now seen corresponding path program 1 times [2023-12-19 17:15:26,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:26,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59786111] [2023-12-19 17:15:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:26,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:26,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:26,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59786111] [2023-12-19 17:15:26,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59786111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:15:26,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:15:26,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 17:15:26,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531501824] [2023-12-19 17:15:26,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:15:26,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 17:15:26,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:26,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 17:15:26,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-19 17:15:26,381 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) [2023-12-19 17:15:26,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:26,509 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2023-12-19 17:15:26,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 17:15:26,514 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) Word has length 15 [2023-12-19 17:15:26,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:26,515 INFO L225 Difference]: With dead ends: 37 [2023-12-19 17:15:26,515 INFO L226 Difference]: Without dead ends: 35 [2023-12-19 17:15:26,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-19 17:15:26,516 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 21 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:26,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 44 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:15:26,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-19 17:15:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2023-12-19 17:15:26,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-12-19 17:15:26,523 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 15 [2023-12-19 17:15:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:26,524 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-12-19 17:15:26,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) [2023-12-19 17:15:26,524 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-12-19 17:15:26,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-19 17:15:26,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:26,525 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:26,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 17:15:26,526 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:26,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:26,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1640179889, now seen corresponding path program 1 times [2023-12-19 17:15:26,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:26,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224393354] [2023-12-19 17:15:26,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:26,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:26,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:26,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224393354] [2023-12-19 17:15:26,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224393354] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:26,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873384009] [2023-12-19 17:15:26,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:26,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:26,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:26,728 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) [2023-12-19 17:15:26,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 17:15:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:26,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 17:15:26,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:26,887 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 [2023-12-19 17:15:26,892 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 [2023-12-19 17:15:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:27,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:27,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873384009] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:27,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:27,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-12-19 17:15:27,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84533098] [2023-12-19 17:15:27,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:27,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 17:15:27,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:27,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 17:15:27,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 17:15:27,101 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:27,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:27,187 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2023-12-19 17:15:27,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 17:15:27,188 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-19 17:15:27,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:27,188 INFO L225 Difference]: With dead ends: 47 [2023-12-19 17:15:27,188 INFO L226 Difference]: Without dead ends: 31 [2023-12-19 17:15:27,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-19 17:15:27,189 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:27,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 90 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:15:27,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-19 17:15:27,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-19 17:15:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:27,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2023-12-19 17:15:27,193 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2023-12-19 17:15:27,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:27,193 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2023-12-19 17:15:27,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:27,194 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2023-12-19 17:15:27,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-19 17:15:27,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:27,194 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:27,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 17:15:27,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:27,410 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:27,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:27,410 INFO L85 PathProgramCache]: Analyzing trace with hash -109131164, now seen corresponding path program 2 times [2023-12-19 17:15:27,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:27,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047934579] [2023-12-19 17:15:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:27,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:15:27,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:27,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047934579] [2023-12-19 17:15:27,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047934579] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:27,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101265142] [2023-12-19 17:15:27,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:15:27,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:27,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:27,606 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) [2023-12-19 17:15:27,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 17:15:27,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:15:27,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:15:27,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 17:15:27,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:27,829 INFO L349 Elim1Store]: treesize reduction 58, result has 31.0 percent of original size [2023-12-19 17:15:27,830 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 1 case distinctions, treesize of input 45 treesize of output 33 [2023-12-19 17:15:27,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-12-19 17:15:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:15:27,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:27,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-12-19 17:15:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:15:27,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101265142] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:27,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:27,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2023-12-19 17:15:27,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748799207] [2023-12-19 17:15:27,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:27,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 17:15:27,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:27,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 17:15:27,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-19 17:15:27,969 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:28,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:28,194 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2023-12-19 17:15:28,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 17:15:28,194 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-19 17:15:28,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:28,195 INFO L225 Difference]: With dead ends: 96 [2023-12-19 17:15:28,195 INFO L226 Difference]: Without dead ends: 76 [2023-12-19 17:15:28,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-12-19 17:15:28,196 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 66 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:28,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 86 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:15:28,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-19 17:15:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 40. [2023-12-19 17:15:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.236842105263158) internal successors, (47), 39 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) [2023-12-19 17:15:28,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2023-12-19 17:15:28,202 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 24 [2023-12-19 17:15:28,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:28,203 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2023-12-19 17:15:28,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:28,203 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2023-12-19 17:15:28,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-19 17:15:28,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:28,203 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:28,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 17:15:28,409 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,SelfDestructingSolverStorable7 [2023-12-19 17:15:28,410 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:28,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:28,411 INFO L85 PathProgramCache]: Analyzing trace with hash -695937178, now seen corresponding path program 1 times [2023-12-19 17:15:28,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:28,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54114552] [2023-12-19 17:15:28,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:28,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:28,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:28,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54114552] [2023-12-19 17:15:28,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54114552] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:28,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862422375] [2023-12-19 17:15:28,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:28,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:28,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:28,860 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) [2023-12-19 17:15:28,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 17:15:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:28,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-19 17:15:28,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:28,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-19 17:15:29,033 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-12-19 17:15:29,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2023-12-19 17:15:29,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-19 17:15:29,064 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-12-19 17:15:29,064 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 15 treesize of output 15 [2023-12-19 17:15:29,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 17:15:29,078 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 [2023-12-19 17:15:29,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-19 17:15:29,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-19 17:15:29,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-19 17:15:29,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:29,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:29,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862422375] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:29,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:29,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 18 [2023-12-19 17:15:29,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663900424] [2023-12-19 17:15:29,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:29,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 17:15:29,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:29,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 17:15:29,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-12-19 17:15:29,430 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:29,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:29,755 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2023-12-19 17:15:29,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 17:15:29,756 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-19 17:15:29,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:29,757 INFO L225 Difference]: With dead ends: 50 [2023-12-19 17:15:29,757 INFO L226 Difference]: Without dead ends: 48 [2023-12-19 17:15:29,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2023-12-19 17:15:29,758 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 62 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:29,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 121 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:15:29,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-19 17:15:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2023-12-19 17:15:29,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2023-12-19 17:15:29,764 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 24 [2023-12-19 17:15:29,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:29,764 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2023-12-19 17:15:29,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:29,764 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2023-12-19 17:15:29,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-19 17:15:29,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:29,765 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:29,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 17:15:29,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:29,971 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:29,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:29,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1219395720, now seen corresponding path program 1 times [2023-12-19 17:15:29,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:29,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786293434] [2023-12-19 17:15:29,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:29,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:30,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:30,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786293434] [2023-12-19 17:15:30,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786293434] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:30,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305413063] [2023-12-19 17:15:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:30,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:30,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:30,454 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) [2023-12-19 17:15:30,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 17:15:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:30,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-19 17:15:30,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:30,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-19 17:15:30,593 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 [2023-12-19 17:15:30,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 17:15:30,602 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-12-19 17:15:30,602 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 15 treesize of output 15 [2023-12-19 17:15:30,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-19 17:15:30,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-19 17:15:30,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-19 17:15:30,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-19 17:15:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:30,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:30,864 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:30,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2023-12-19 17:15:30,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-19 17:15:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:30,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305413063] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:30,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:30,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 18 [2023-12-19 17:15:30,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000420578] [2023-12-19 17:15:30,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:30,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 17:15:30,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:30,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 17:15:30,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-12-19 17:15:30,951 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 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) [2023-12-19 17:15:31,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:31,339 INFO L93 Difference]: Finished difference Result 100 states and 113 transitions. [2023-12-19 17:15:31,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 17:15:31,340 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 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) Word has length 26 [2023-12-19 17:15:31,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:31,340 INFO L225 Difference]: With dead ends: 100 [2023-12-19 17:15:31,340 INFO L226 Difference]: Without dead ends: 98 [2023-12-19 17:15:31,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2023-12-19 17:15:31,341 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 91 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:31,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 138 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:15:31,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-19 17:15:31,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 71. [2023-12-19 17:15:31,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 70 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:31,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2023-12-19 17:15:31,349 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 26 [2023-12-19 17:15:31,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:31,349 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2023-12-19 17:15:31,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 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) [2023-12-19 17:15:31,350 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2023-12-19 17:15:31,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-19 17:15:31,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:31,350 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:31,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 17:15:31,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:31,551 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:31,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:31,552 INFO L85 PathProgramCache]: Analyzing trace with hash 9730436, now seen corresponding path program 1 times [2023-12-19 17:15:31,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:31,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803475136] [2023-12-19 17:15:31,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:31,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:31,970 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:31,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:31,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803475136] [2023-12-19 17:15:31,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803475136] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:31,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832132866] [2023-12-19 17:15:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:31,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:31,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:31,972 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) [2023-12-19 17:15:31,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 17:15:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:32,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-19 17:15:32,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:32,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-19 17:15:32,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 17:15:32,112 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-12-19 17:15:32,112 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 15 treesize of output 15 [2023-12-19 17:15:32,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-19 17:15:32,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-19 17:15:32,299 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 7 treesize of output 3 [2023-12-19 17:15:32,302 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 25 treesize of output 17 [2023-12-19 17:15:32,349 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-19 17:15:32,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2023-12-19 17:15:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:32,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:32,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:32,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2023-12-19 17:15:32,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:32,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2023-12-19 17:15:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:32,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832132866] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:32,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:32,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 26 [2023-12-19 17:15:32,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125252889] [2023-12-19 17:15:32,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:32,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 17:15:32,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:32,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 17:15:32,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2023-12-19 17:15:32,790 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:33,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:33,512 INFO L93 Difference]: Finished difference Result 123 states and 137 transitions. [2023-12-19 17:15:33,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 17:15:33,513 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-19 17:15:33,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:33,514 INFO L225 Difference]: With dead ends: 123 [2023-12-19 17:15:33,514 INFO L226 Difference]: Without dead ends: 121 [2023-12-19 17:15:33,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=263, Invalid=1459, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 17:15:33,515 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 79 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:33,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 259 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 17:15:33,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-19 17:15:33,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 74. [2023-12-19 17:15:33,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.2222222222222223) internal successors, (88), 73 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2023-12-19 17:15:33,524 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 26 [2023-12-19 17:15:33,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:33,524 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2023-12-19 17:15:33,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:33,525 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2023-12-19 17:15:33,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-19 17:15:33,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:33,525 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:33,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 17:15:33,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 17:15:33,733 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:33,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:33,734 INFO L85 PathProgramCache]: Analyzing trace with hash 432432262, now seen corresponding path program 1 times [2023-12-19 17:15:33,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:33,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868229984] [2023-12-19 17:15:33,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:33,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:34,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:34,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868229984] [2023-12-19 17:15:34,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868229984] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:34,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370635429] [2023-12-19 17:15:34,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:34,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:34,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:34,177 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) [2023-12-19 17:15:34,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 17:15:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:34,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-19 17:15:34,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:34,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-19 17:15:34,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 17:15:34,440 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 [2023-12-19 17:15:34,456 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-12-19 17:15:34,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2023-12-19 17:15:34,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-19 17:15:34,473 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-12-19 17:15:34,474 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 15 treesize of output 15 [2023-12-19 17:15:34,719 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 31 treesize of output 19 [2023-12-19 17:15:34,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-19 17:15:34,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2023-12-19 17:15:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:34,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:35,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:35,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2023-12-19 17:15:35,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:35,095 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 29 treesize of output 27 [2023-12-19 17:15:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:35,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370635429] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:35,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:35,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 29 [2023-12-19 17:15:35,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703132681] [2023-12-19 17:15:35,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:35,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 17:15:35,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:35,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 17:15:35,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=731, Unknown=1, NotChecked=0, Total=812 [2023-12-19 17:15:35,208 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:37,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:37,823 INFO L93 Difference]: Finished difference Result 279 states and 316 transitions. [2023-12-19 17:15:37,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-19 17:15:37,824 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 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 [2023-12-19 17:15:37,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:37,825 INFO L225 Difference]: With dead ends: 279 [2023-12-19 17:15:37,826 INFO L226 Difference]: Without dead ends: 277 [2023-12-19 17:15:37,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1469 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=798, Invalid=6007, Unknown=1, NotChecked=0, Total=6806 [2023-12-19 17:15:37,828 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 193 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:37,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 477 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 17:15:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-12-19 17:15:37,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 45. [2023-12-19 17:15:37,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2023-12-19 17:15:37,837 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 26 [2023-12-19 17:15:37,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:37,838 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2023-12-19 17:15:37,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:37,838 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2023-12-19 17:15:37,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-19 17:15:37,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:37,842 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:37,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 17:15:38,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:38,043 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:38,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:38,043 INFO L85 PathProgramCache]: Analyzing trace with hash 188386815, now seen corresponding path program 2 times [2023-12-19 17:15:38,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:38,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124410696] [2023-12-19 17:15:38,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:38,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:38,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:38,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124410696] [2023-12-19 17:15:38,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124410696] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:38,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613014244] [2023-12-19 17:15:38,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:15:38,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:38,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:38,360 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) [2023-12-19 17:15:38,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 17:15:38,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:15:38,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:15:38,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-19 17:15:38,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:38,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-19 17:15:38,476 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 [2023-12-19 17:15:38,480 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 [2023-12-19 17:15:38,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:15:38,544 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-12-19 17:15:38,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2023-12-19 17:15:38,554 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-12-19 17:15:38,555 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 15 treesize of output 15 [2023-12-19 17:15:38,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-12-19 17:15:38,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:15:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:38,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:38,836 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:38,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2023-12-19 17:15:38,841 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:38,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2023-12-19 17:15:38,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-19 17:15:38,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-19 17:15:38,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:38,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2023-12-19 17:15:38,997 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:38,998 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 20 treesize of output 8 [2023-12-19 17:15:39,004 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:39,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-12-19 17:15:39,006 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:39,007 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 16 treesize of output 8 [2023-12-19 17:15:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:39,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613014244] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:39,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:39,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2023-12-19 17:15:39,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468612405] [2023-12-19 17:15:39,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:39,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 17:15:39,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:39,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 17:15:39,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-12-19 17:15:39,014 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:39,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:39,271 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2023-12-19 17:15:39,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 17:15:39,271 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 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 [2023-12-19 17:15:39,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:39,272 INFO L225 Difference]: With dead ends: 78 [2023-12-19 17:15:39,272 INFO L226 Difference]: Without dead ends: 57 [2023-12-19 17:15:39,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-12-19 17:15:39,273 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:39,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 171 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:15:39,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-19 17:15:39,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-12-19 17:15:39,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 56 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:39,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2023-12-19 17:15:39,280 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 29 [2023-12-19 17:15:39,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:39,280 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2023-12-19 17:15:39,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:39,280 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2023-12-19 17:15:39,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-19 17:15:39,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:39,281 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:39,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 17:15:39,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:39,482 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:39,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:39,482 INFO L85 PathProgramCache]: Analyzing trace with hash 115894664, now seen corresponding path program 3 times [2023-12-19 17:15:39,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:39,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978660969] [2023-12-19 17:15:39,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:39,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:40,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:40,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978660969] [2023-12-19 17:15:40,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978660969] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:40,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804089929] [2023-12-19 17:15:40,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:15:40,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:40,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:40,103 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) [2023-12-19 17:15:40,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 17:15:40,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-19 17:15:40,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:15:40,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-19 17:15:40,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:40,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-19 17:15:40,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 17:15:40,336 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-12-19 17:15:40,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2023-12-19 17:15:40,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-19 17:15:40,345 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 [2023-12-19 17:15:40,361 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-12-19 17:15:40,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-12-19 17:15:40,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:15:40,475 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2023-12-19 17:15:40,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2023-12-19 17:15:40,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:15:40,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:40,486 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 53 treesize of output 36 [2023-12-19 17:15:40,499 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2023-12-19 17:15:40,499 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 1 case distinctions, treesize of input 24 treesize of output 31 [2023-12-19 17:15:40,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-19 17:15:40,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:40,513 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-12-19 17:15:40,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-12-19 17:15:40,836 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-19 17:15:40,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33 [2023-12-19 17:15:40,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-19 17:15:40,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-19 17:15:40,870 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:40,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:40,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:40,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2023-12-19 17:15:40,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:40,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2023-12-19 17:15:41,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:41,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2023-12-19 17:15:41,073 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:41,075 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 57 treesize of output 45 [2023-12-19 17:15:41,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2023-12-19 17:15:41,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:41,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-12-19 17:15:41,084 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:41,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-12-19 17:15:41,184 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_512 (Array Int Int)) (v_ArrVal_507 (Array Int Int)) (v_arrayElimCell_68 Int) (|v_ULTIMATE.start_main_~l~0#1.base_33| Int)) (or (not (= (select |c_#valid| v_arrayElimCell_68) 0)) (not (= (select (store |c_#valid| v_arrayElimCell_68 1) |v_ULTIMATE.start_main_~l~0#1.base_33|) 0)) (< |c_ULTIMATE.start_main_#t~mem6#1| (+ (select (select (store (store |c_#memory_int#1| v_arrayElimCell_68 v_ArrVal_507) |v_ULTIMATE.start_main_~l~0#1.base_33| v_ArrVal_512) |c_ULTIMATE.start_main_~l~0#1.base|) (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 1)))) is different from false [2023-12-19 17:15:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-12-19 17:15:41,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804089929] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:41,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:41,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 23 [2023-12-19 17:15:41,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880370837] [2023-12-19 17:15:41,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:41,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 17:15:41,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:41,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 17:15:41,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=407, Unknown=1, NotChecked=40, Total=506 [2023-12-19 17:15:41,202 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 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) [2023-12-19 17:15:41,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:41,976 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2023-12-19 17:15:41,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 17:15:41,977 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 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) Word has length 35 [2023-12-19 17:15:41,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:41,977 INFO L225 Difference]: With dead ends: 67 [2023-12-19 17:15:41,977 INFO L226 Difference]: Without dead ends: 65 [2023-12-19 17:15:41,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=244, Invalid=1019, Unknown=1, NotChecked=68, Total=1332 [2023-12-19 17:15:41,978 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 237 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:41,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 164 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 254 Invalid, 0 Unknown, 50 Unchecked, 0.2s Time] [2023-12-19 17:15:41,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-19 17:15:41,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2023-12-19 17:15:41,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 58 states have (on average 1.206896551724138) internal successors, (70), 59 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2023-12-19 17:15:41,987 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 35 [2023-12-19 17:15:41,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:41,987 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2023-12-19 17:15:41,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 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) [2023-12-19 17:15:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2023-12-19 17:15:41,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-19 17:15:41,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:41,988 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:41,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 17:15:42,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-19 17:15:42,194 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:42,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:42,194 INFO L85 PathProgramCache]: Analyzing trace with hash -294251990, now seen corresponding path program 2 times [2023-12-19 17:15:42,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:42,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103869654] [2023-12-19 17:15:42,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:42,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:42,981 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:42,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:42,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103869654] [2023-12-19 17:15:42,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103869654] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:42,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475152187] [2023-12-19 17:15:42,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:15:42,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:42,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:42,983 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) [2023-12-19 17:15:43,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 17:15:43,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:15:43,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:15:43,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-19 17:15:43,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:43,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-19 17:15:43,155 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-12-19 17:15:43,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2023-12-19 17:15:43,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-19 17:15:43,165 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 [2023-12-19 17:15:43,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 17:15:43,185 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-12-19 17:15:43,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-12-19 17:15:43,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:15:43,303 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2023-12-19 17:15:43,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2023-12-19 17:15:43,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:15:43,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:43,315 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 53 treesize of output 36 [2023-12-19 17:15:43,329 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2023-12-19 17:15:43,329 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 1 case distinctions, treesize of input 24 treesize of output 31 [2023-12-19 17:15:43,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-19 17:15:43,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:43,345 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-12-19 17:15:43,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-12-19 17:15:43,689 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-19 17:15:43,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33 [2023-12-19 17:15:43,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-19 17:15:43,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-19 17:15:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:43,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:43,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:43,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2023-12-19 17:15:43,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:43,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2023-12-19 17:15:43,837 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_601 (Array Int Int)) (v_arrayElimArr_13 (Array Int Int)) (v_arrayElimArr_12 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_38| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_38|) 0)) (not (= (select v_arrayElimArr_12 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_13 0))) (< (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_main_~l~0#1.base_38| v_ArrVal_601) (select (select (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_main_~l~0#1.base_38| v_arrayElimArr_12) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (+ (select (select (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_main_~l~0#1.base_38| v_arrayElimArr_13) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|) 4)) (+ |c_ULTIMATE.start_main_~max~0#1| 1)))) is different from false [2023-12-19 17:15:43,916 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:43,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2023-12-19 17:15:43,919 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:43,921 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 57 treesize of output 45 [2023-12-19 17:15:43,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2023-12-19 17:15:43,928 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:43,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-12-19 17:15:43,930 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:43,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-12-19 17:15:44,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:44,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 73 [2023-12-19 17:15:44,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-12-19 17:15:44,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-12-19 17:15:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2023-12-19 17:15:44,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475152187] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:44,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:44,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 26 [2023-12-19 17:15:44,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451980905] [2023-12-19 17:15:44,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:44,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 17:15:44,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:44,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 17:15:44,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=533, Unknown=1, NotChecked=46, Total=650 [2023-12-19 17:15:44,147 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 26 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 26 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:45,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:45,346 INFO L93 Difference]: Finished difference Result 164 states and 185 transitions. [2023-12-19 17:15:45,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-19 17:15:45,346 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 26 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-19 17:15:45,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:45,348 INFO L225 Difference]: With dead ends: 164 [2023-12-19 17:15:45,348 INFO L226 Difference]: Without dead ends: 162 [2023-12-19 17:15:45,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=270, Invalid=1895, Unknown=1, NotChecked=90, Total=2256 [2023-12-19 17:15:45,351 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 180 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:45,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 296 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 674 Invalid, 0 Unknown, 96 Unchecked, 0.4s Time] [2023-12-19 17:15:45,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-19 17:15:45,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 108. [2023-12-19 17:15:45,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 107 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:45,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2023-12-19 17:15:45,377 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 37 [2023-12-19 17:15:45,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:45,378 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2023-12-19 17:15:45,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 26 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:45,378 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2023-12-19 17:15:45,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-19 17:15:45,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:45,381 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:45,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 17:15:45,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 17:15:45,587 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:45,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:45,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1589627152, now seen corresponding path program 2 times [2023-12-19 17:15:45,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:45,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638996350] [2023-12-19 17:15:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:45,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:46,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:46,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638996350] [2023-12-19 17:15:46,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638996350] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:46,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640312442] [2023-12-19 17:15:46,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:15:46,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:46,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:46,571 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) [2023-12-19 17:15:46,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 17:15:46,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:15:46,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:15:46,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-19 17:15:46,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:46,715 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 8 treesize of output 1 [2023-12-19 17:15:46,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-19 17:15:46,751 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 [2023-12-19 17:15:46,767 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-12-19 17:15:46,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-12-19 17:15:46,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 17:15:46,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-19 17:15:46,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:15:46,965 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2023-12-19 17:15:46,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2023-12-19 17:15:46,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:15:46,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:46,984 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 47 treesize of output 36 [2023-12-19 17:15:46,995 INFO L349 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2023-12-19 17:15:46,995 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 28 treesize of output 22 [2023-12-19 17:15:47,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:47,003 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-12-19 17:15:47,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 45 treesize of output 37 [2023-12-19 17:15:47,488 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-19 17:15:47,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 40 [2023-12-19 17:15:47,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:47,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-19 17:15:47,575 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-12-19 17:15:47,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 29 [2023-12-19 17:15:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:47,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:47,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:47,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 40 [2023-12-19 17:15:47,810 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:47,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2023-12-19 17:15:48,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:48,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 62 [2023-12-19 17:15:48,121 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:48,123 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 59 treesize of output 47 [2023-12-19 17:15:48,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 50 [2023-12-19 17:15:48,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:48,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2023-12-19 17:15:48,137 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:48,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-12-19 17:15:48,378 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:48,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640312442] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:48,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:48,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 38 [2023-12-19 17:15:48,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457580415] [2023-12-19 17:15:48,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:48,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-19 17:15:48,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:48,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-19 17:15:48,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 17:15:48,380 INFO L87 Difference]: Start difference. First operand 108 states and 129 transitions. Second operand has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 38 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:51,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:51,379 INFO L93 Difference]: Finished difference Result 269 states and 298 transitions. [2023-12-19 17:15:51,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-19 17:15:51,380 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 38 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-19 17:15:51,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:51,381 INFO L225 Difference]: With dead ends: 269 [2023-12-19 17:15:51,381 INFO L226 Difference]: Without dead ends: 267 [2023-12-19 17:15:51,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=853, Invalid=5773, Unknown=16, NotChecked=0, Total=6642 [2023-12-19 17:15:51,382 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 328 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 11 mSolverCounterUnsat, 53 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 53 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:51,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 410 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1085 Invalid, 53 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 17:15:51,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-12-19 17:15:51,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 126. [2023-12-19 17:15:51,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 124 states have (on average 1.2338709677419355) internal successors, (153), 125 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 153 transitions. [2023-12-19 17:15:51,400 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 153 transitions. Word has length 37 [2023-12-19 17:15:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:51,400 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 153 transitions. [2023-12-19 17:15:51,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 38 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 153 transitions. [2023-12-19 17:15:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-19 17:15:51,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:51,401 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:51,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 17:15:51,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 17:15:51,608 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:51,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:51,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1314867538, now seen corresponding path program 2 times [2023-12-19 17:15:51,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:51,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276132553] [2023-12-19 17:15:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:51,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:52,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:52,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276132553] [2023-12-19 17:15:52,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276132553] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:52,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123996890] [2023-12-19 17:15:52,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:15:52,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:52,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:52,631 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) [2023-12-19 17:15:52,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 17:15:52,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:15:52,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:15:52,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-19 17:15:52,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:52,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-19 17:15:52,915 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-12-19 17:15:52,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-12-19 17:15:52,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 17 [2023-12-19 17:15:52,938 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 [2023-12-19 17:15:52,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 17:15:53,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:15:53,159 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2023-12-19 17:15:53,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2023-12-19 17:15:53,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:15:53,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:53,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:53,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2023-12-19 17:15:53,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:53,183 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 55 treesize of output 38 [2023-12-19 17:15:53,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:53,198 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-12-19 17:15:53,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-12-19 17:15:53,797 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-19 17:15:53,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 53 [2023-12-19 17:15:53,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:53,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-19 17:15:53,891 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-19 17:15:53,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 26 [2023-12-19 17:15:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:53,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:54,190 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:54,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 40 [2023-12-19 17:15:54,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:54,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2023-12-19 17:15:54,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:54,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 72 [2023-12-19 17:15:54,452 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:54,453 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 69 treesize of output 57 [2023-12-19 17:15:54,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 58 [2023-12-19 17:15:54,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:54,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 43 [2023-12-19 17:15:54,472 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:54,473 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 40 treesize of output 32 [2023-12-19 17:15:54,693 INFO L349 Elim1Store]: treesize reduction 47, result has 50.5 percent of original size [2023-12-19 17:15:54,693 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 67 [2023-12-19 17:15:54,729 INFO L349 Elim1Store]: treesize reduction 4, result has 88.2 percent of original size [2023-12-19 17:15:54,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 94 [2023-12-19 17:15:54,744 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:54,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2023-12-19 17:15:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:55,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123996890] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:55,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:55,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 43 [2023-12-19 17:15:55,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466840050] [2023-12-19 17:15:55,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:55,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-19 17:15:55,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:55,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-19 17:15:55,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1667, Unknown=3, NotChecked=0, Total=1806 [2023-12-19 17:15:55,502 INFO L87 Difference]: Start difference. First operand 126 states and 153 transitions. Second operand has 43 states, 43 states have (on average 2.4651162790697674) internal successors, (106), 43 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:16:03,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:16:03,774 INFO L93 Difference]: Finished difference Result 336 states and 374 transitions. [2023-12-19 17:16:03,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-19 17:16:03,774 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.4651162790697674) internal successors, (106), 43 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-19 17:16:03,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:16:03,775 INFO L225 Difference]: With dead ends: 336 [2023-12-19 17:16:03,775 INFO L226 Difference]: Without dead ends: 334 [2023-12-19 17:16:03,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4955 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1978, Invalid=16091, Unknown=21, NotChecked=0, Total=18090 [2023-12-19 17:16:03,778 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 355 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 23 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 17:16:03,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 868 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2507 Invalid, 27 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 17:16:03,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-12-19 17:16:03,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 108. [2023-12-19 17:16:03,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 107 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:16:03,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2023-12-19 17:16:03,798 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 37 [2023-12-19 17:16:03,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:16:03,799 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2023-12-19 17:16:03,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.4651162790697674) internal successors, (106), 43 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:16:03,799 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2023-12-19 17:16:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-19 17:16:03,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:16:03,800 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 17:16:03,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 17:16:04,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 17:16:04,000 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:16:04,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:16:04,001 INFO L85 PathProgramCache]: Analyzing trace with hash -2070476374, now seen corresponding path program 1 times [2023-12-19 17:16:04,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:16:04,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539085800] [2023-12-19 17:16:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:16:04,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:16:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:16:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:16:04,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:16:04,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539085800] [2023-12-19 17:16:04,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539085800] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:16:04,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143800808] [2023-12-19 17:16:04,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:16:04,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:16:04,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:16:04,829 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) [2023-12-19 17:16:04,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 17:16:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:16:04,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-19 17:16:04,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:16:04,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-19 17:16:05,014 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-12-19 17:16:05,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2023-12-19 17:16:05,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-19 17:16:05,024 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 [2023-12-19 17:16:05,041 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-12-19 17:16:05,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-12-19 17:16:05,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 17:16:05,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:16:05,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:05,158 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 53 treesize of output 36 [2023-12-19 17:16:05,172 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2023-12-19 17:16:05,172 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 1 case distinctions, treesize of input 24 treesize of output 31 [2023-12-19 17:16:05,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-19 17:16:05,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:05,187 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-12-19 17:16:05,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-12-19 17:16:05,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:05,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-12-19 17:16:05,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:16:05,497 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-19 17:16:05,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33 [2023-12-19 17:16:05,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-19 17:16:05,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-19 17:16:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:16:05,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:16:05,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:05,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2023-12-19 17:16:05,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:05,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2023-12-19 17:16:05,647 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_869 (Array Int Int)) (v_arrayElimArr_28 (Array Int Int)) (v_arrayElimArr_29 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_53| Int)) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_29 0))) (< (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_main_~l~0#1.base_53| v_ArrVal_869) (select (select (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_main_~l~0#1.base_53| v_arrayElimArr_28) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (+ (select (select (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_main_~l~0#1.base_53| v_arrayElimArr_29) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|) 4)) (+ |c_ULTIMATE.start_main_~max~0#1| 1)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_53|) 0)) (not (= (select v_arrayElimArr_28 0) |c_ULTIMATE.start_main_~l~0#1.base|)))) is different from false [2023-12-19 17:16:05,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:05,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2023-12-19 17:16:05,709 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:05,710 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 57 treesize of output 45 [2023-12-19 17:16:05,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2023-12-19 17:16:05,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:05,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-12-19 17:16:05,720 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:05,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-12-19 17:16:09,847 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:09,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 194 treesize of output 145 [2023-12-19 17:16:09,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-12-19 17:16:09,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-12-19 17:16:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2023-12-19 17:16:09,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143800808] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:16:09,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:16:09,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 11] total 26 [2023-12-19 17:16:09,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166746041] [2023-12-19 17:16:09,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:16:09,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 17:16:09,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:16:09,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 17:16:09,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=537, Unknown=2, NotChecked=46, Total=650 [2023-12-19 17:16:09,999 INFO L87 Difference]: Start difference. First operand 108 states and 129 transitions. Second operand has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:16:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:16:11,834 INFO L93 Difference]: Finished difference Result 161 states and 182 transitions. [2023-12-19 17:16:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-19 17:16:11,835 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-19 17:16:11,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:16:11,835 INFO L225 Difference]: With dead ends: 161 [2023-12-19 17:16:11,835 INFO L226 Difference]: Without dead ends: 159 [2023-12-19 17:16:11,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 64 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=487, Invalid=2485, Unknown=2, NotChecked=106, Total=3080 [2023-12-19 17:16:11,837 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 101 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 17:16:11,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 202 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 586 Invalid, 0 Unknown, 76 Unchecked, 0.4s Time] [2023-12-19 17:16:11,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-19 17:16:11,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 62. [2023-12-19 17:16:11,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.2) internal successors, (72), 61 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) [2023-12-19 17:16:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2023-12-19 17:16:11,852 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 37 [2023-12-19 17:16:11,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:16:11,852 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2023-12-19 17:16:11,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:16:11,852 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2023-12-19 17:16:11,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-19 17:16:11,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:16:11,853 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 17:16:11,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 17:16:12,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 17:16:12,056 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:16:12,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:16:12,057 INFO L85 PathProgramCache]: Analyzing trace with hash -28901091, now seen corresponding path program 4 times [2023-12-19 17:16:12,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:16:12,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062558322] [2023-12-19 17:16:12,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:16:12,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:16:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:16:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:16:12,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:16:12,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062558322] [2023-12-19 17:16:12,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062558322] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:16:12,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134212955] [2023-12-19 17:16:12,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:16:12,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:16:12,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:16:12,640 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) [2023-12-19 17:16:12,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 17:16:12,782 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:16:12,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:16:12,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-19 17:16:12,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:16:12,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-19 17:16:12,800 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 [2023-12-19 17:16:12,804 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 [2023-12-19 17:16:12,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:16:12,881 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-12-19 17:16:12,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-12-19 17:16:12,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-19 17:16:12,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-12-19 17:16:12,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:16:13,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:16:13,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:13,024 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-12-19 17:16:13,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 51 [2023-12-19 17:16:13,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:13,042 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-12-19 17:16:13,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-12-19 17:16:13,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:13,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 41 [2023-12-19 17:16:13,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:16:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:16:13,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:16:13,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:13,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 65 [2023-12-19 17:16:13,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:13,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 56 [2023-12-19 17:16:13,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:13,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 127 [2023-12-19 17:16:13,790 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:13,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 118 [2023-12-19 17:16:14,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:14,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 66 [2023-12-19 17:16:14,214 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:14,221 INFO L349 Elim1Store]: treesize reduction 32, result has 11.1 percent of original size [2023-12-19 17:16:14,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 222 [2023-12-19 17:16:14,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:14,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 47 [2023-12-19 17:16:14,230 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:14,231 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:14,231 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:14,239 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:14,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2023-12-19 17:16:14,242 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 42 treesize of output 36 [2023-12-19 17:16:14,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:14,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 78 [2023-12-19 17:16:14,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:14,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 54 [2023-12-19 17:16:14,259 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:14,261 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 42 treesize of output 36 [2023-12-19 17:16:14,270 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-12-19 17:16:14,270 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 32 treesize of output 26 [2023-12-19 17:16:14,272 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:14,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 68 [2023-12-19 17:16:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:16:14,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134212955] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:16:14,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:16:14,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 20 [2023-12-19 17:16:14,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24162093] [2023-12-19 17:16:14,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:16:14,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 17:16:14,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:16:14,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 17:16:14,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2023-12-19 17:16:14,283 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:16:14,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:16:14,707 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2023-12-19 17:16:14,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 17:16:14,707 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-19 17:16:14,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:16:14,708 INFO L225 Difference]: With dead ends: 100 [2023-12-19 17:16:14,708 INFO L226 Difference]: Without dead ends: 74 [2023-12-19 17:16:14,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2023-12-19 17:16:14,708 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 53 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:16:14,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 245 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:16:14,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-19 17:16:14,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-12-19 17:16:14,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 73 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:16:14,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2023-12-19 17:16:14,724 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 40 [2023-12-19 17:16:14,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:16:14,725 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2023-12-19 17:16:14,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:16:14,726 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2023-12-19 17:16:14,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-19 17:16:14,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:16:14,727 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-12-19 17:16:14,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 17:16:14,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:16:14,927 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:16:14,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:16:14,928 INFO L85 PathProgramCache]: Analyzing trace with hash -83638796, now seen corresponding path program 5 times [2023-12-19 17:16:14,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:16:14,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206042586] [2023-12-19 17:16:14,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:16:14,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:16:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:16:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:16:17,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:16:17,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206042586] [2023-12-19 17:16:17,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206042586] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:16:17,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807256190] [2023-12-19 17:16:17,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:16:17,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:16:17,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:16:17,004 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) [2023-12-19 17:16:17,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 17:16:17,327 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-19 17:16:17,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:16:17,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-19 17:16:17,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:16:17,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-19 17:16:17,464 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-12-19 17:16:17,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-12-19 17:16:17,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-19 17:16:17,475 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 [2023-12-19 17:16:17,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 17:16:17,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:16:17,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:17,590 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 53 treesize of output 36 [2023-12-19 17:16:17,606 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2023-12-19 17:16:17,607 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 1 case distinctions, treesize of input 24 treesize of output 31 [2023-12-19 17:16:17,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-19 17:16:17,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:17,636 INFO L349 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2023-12-19 17:16:17,636 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 34 treesize of output 49 [2023-12-19 17:16:17,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:17,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-12-19 17:16:17,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:16:17,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:16:17,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:17,820 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-12-19 17:16:17,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 70 [2023-12-19 17:16:17,835 INFO L349 Elim1Store]: treesize reduction 37, result has 47.1 percent of original size [2023-12-19 17:16:17,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 39 [2023-12-19 17:16:17,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-12-19 17:16:17,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:17,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:17,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:17,852 INFO L349 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-12-19 17:16:17,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2023-12-19 17:16:17,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:17,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:17,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:17,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 41 [2023-12-19 17:16:17,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:16:18,458 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-12-19 17:16:18,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 121 treesize of output 55 [2023-12-19 17:16:18,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-19 17:16:18,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-19 17:16:18,471 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:16:18,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:16:18,690 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:18,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 72 [2023-12-19 17:16:18,694 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:18,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 63 [2023-12-19 17:16:18,704 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_44 (Array Int Int)) (v_arrayElimArr_45 (Array Int Int)) (v_ArrVal_1090 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_65| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_65|) 0)) (< |c_ULTIMATE.start_main_~min~0#1| (+ (let ((.cse3 (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_main_~l~0#1.base_65| v_arrayElimArr_45)) (.cse0 (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_main_~l~0#1.base_65| v_arrayElimArr_44))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_main_~l~0#1.base_65| v_ArrVal_1090) (select (select .cse0 .cse1) .cse2)) (+ (select (select .cse3 .cse1) .cse2) 4)))) 1)) (not (= (select v_arrayElimArr_45 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_44 0))))) is different from false [2023-12-19 17:16:18,762 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:18,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 115 [2023-12-19 17:16:18,768 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:18,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 106 [2023-12-19 17:16:18,785 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_44 (Array Int Int)) (v_arrayElimArr_46 (Array Int Int)) (v_arrayElimArr_45 (Array Int Int)) (v_ArrVal_1090 (Array Int Int)) (v_arrayElimArr_47 (Array Int Int)) (v_ArrVal_1084 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_65| Int)) (let ((.cse0 (select v_arrayElimArr_44 0))) (or (not (= (select v_arrayElimArr_46 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (< |c_ULTIMATE.start_main_~min~0#1| (+ (let ((.cse4 (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_arrayElimArr_46) |v_ULTIMATE.start_main_~l~0#1.base_65| v_arrayElimArr_45)) (.cse1 (store (store |c_#memory_$Pointer$#1.base| .cse0 v_arrayElimArr_47) |v_ULTIMATE.start_main_~l~0#1.base_65| v_arrayElimArr_44))) (let ((.cse2 (select (select .cse1 .cse0) 0)) (.cse3 (select (select .cse4 .cse0) 0))) (select (select (store (store |c_#memory_int#1| .cse0 v_ArrVal_1084) |v_ULTIMATE.start_main_~l~0#1.base_65| v_ArrVal_1090) (select (select .cse1 .cse2) .cse3)) (+ (select (select .cse4 .cse2) .cse3) 4)))) 1)) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_65|) 0)) (not (= (select |c_#valid| .cse0) 0)) (not (= (select v_arrayElimArr_45 0) 0)) (not (= (select v_arrayElimArr_47 0) |c_ULTIMATE.start_main_~l~0#1.base|))))) is different from false [2023-12-19 17:16:18,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:18,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 151 [2023-12-19 17:16:18,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:18,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 115 [2023-12-19 17:16:18,915 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:18,916 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:18,917 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:18,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:18,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 57 [2023-12-19 17:16:18,925 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:18,927 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 164 treesize of output 152 [2023-12-19 17:16:18,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 149 [2023-12-19 17:16:18,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 123 [2023-12-19 17:16:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 30 not checked. [2023-12-19 17:16:19,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807256190] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:16:19,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:16:19,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12, 12] total 43 [2023-12-19 17:16:19,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336974684] [2023-12-19 17:16:19,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:16:19,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-19 17:16:19,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:16:19,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-19 17:16:19,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1526, Unknown=4, NotChecked=158, Total=1806 [2023-12-19 17:16:19,943 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand has 43 states, 43 states have (on average 3.0930232558139537) internal successors, (133), 43 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:16:30,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:16:30,796 INFO L93 Difference]: Finished difference Result 473 states and 534 transitions. [2023-12-19 17:16:30,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-19 17:16:30,796 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.0930232558139537) internal successors, (133), 43 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-19 17:16:30,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:16:30,798 INFO L225 Difference]: With dead ends: 473 [2023-12-19 17:16:30,798 INFO L226 Difference]: Without dead ends: 471 [2023-12-19 17:16:30,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 85 SyntacticMatches, 6 SemanticMatches, 124 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3733 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=2212, Invalid=13044, Unknown=4, NotChecked=490, Total=15750 [2023-12-19 17:16:30,802 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 549 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 2659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 594 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 17:16:30,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 702 Invalid, 2659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2024 Invalid, 0 Unknown, 594 Unchecked, 1.6s Time] [2023-12-19 17:16:30,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-12-19 17:16:30,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 239. [2023-12-19 17:16:30,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 237 states have (on average 1.2573839662447257) internal successors, (298), 238 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:16:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 298 transitions. [2023-12-19 17:16:30,848 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 298 transitions. Word has length 46 [2023-12-19 17:16:30,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:16:30,848 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 298 transitions. [2023-12-19 17:16:30,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.0930232558139537) internal successors, (133), 43 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:16:30,849 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 298 transitions. [2023-12-19 17:16:30,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-19 17:16:30,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:16:30,849 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 17:16:30,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 17:16:31,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:16:31,050 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:16:31,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:16:31,050 INFO L85 PathProgramCache]: Analyzing trace with hash -925787280, now seen corresponding path program 1 times [2023-12-19 17:16:31,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:16:31,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726526822] [2023-12-19 17:16:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:16:31,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:16:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:16:32,811 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 2 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:16:32,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:16:32,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726526822] [2023-12-19 17:16:32,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726526822] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:16:32,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566305521] [2023-12-19 17:16:32,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:16:32,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:16:32,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:16:32,813 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) [2023-12-19 17:16:32,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 17:16:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:16:32,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 89 conjunts are in the unsatisfiable core [2023-12-19 17:16:32,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:16:32,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-19 17:16:33,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 17:16:33,058 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-12-19 17:16:33,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2023-12-19 17:16:33,064 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 [2023-12-19 17:16:33,077 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-12-19 17:16:33,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-12-19 17:16:33,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:16:33,179 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2023-12-19 17:16:33,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2023-12-19 17:16:33,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:16:33,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:33,192 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 53 treesize of output 36 [2023-12-19 17:16:33,207 INFO L349 Elim1Store]: treesize reduction 33, result has 45.0 percent of original size [2023-12-19 17:16:33,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2023-12-19 17:16:33,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:33,227 INFO L349 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2023-12-19 17:16:33,227 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 34 treesize of output 49 [2023-12-19 17:16:33,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:16:33,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:33,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:33,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:33,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 41 [2023-12-19 17:16:33,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:33,517 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-12-19 17:16:33,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 70 [2023-12-19 17:16:33,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:33,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:33,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:33,547 INFO L349 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-12-19 17:16:33,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2023-12-19 17:16:33,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:33,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2023-12-19 17:16:33,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:16:34,300 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-12-19 17:16:34,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 67 [2023-12-19 17:16:34,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:34,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-19 17:16:34,372 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-12-19 17:16:34,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 26 [2023-12-19 17:16:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:16:34,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:16:34,632 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:34,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 74 [2023-12-19 17:16:34,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:34,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 65 [2023-12-19 17:16:34,654 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1208 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_72| Int) (v_arrayElimArr_53 (Array Int Int)) (v_arrayElimArr_52 (Array Int Int))) (let ((.cse0 (select v_ArrVal_1208 4))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_72|) 0)) (not (= (select v_arrayElimArr_53 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_52 0))) (< .cse0 (+ (let ((.cse4 (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_main_~l~0#1.base_72| v_arrayElimArr_53)) (.cse1 (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_main_~l~0#1.base_72| v_arrayElimArr_52))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_main_~l~0#1.base_72| v_ArrVal_1208) (select (select .cse1 .cse2) .cse3)) (+ (select (select .cse4 .cse2) .cse3) 4)))) 1)) (< |c_ULTIMATE.start_main_~min~0#1| (+ .cse0 1))))) is different from false [2023-12-19 17:16:34,744 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1208 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_72| Int) (v_arrayElimArr_53 (Array Int Int)) (v_arrayElimArr_52 (Array Int Int))) (let ((.cse0 (select v_ArrVal_1208 4))) (or (< (select (select |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) (+ .cse0 1)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_72|) 0)) (not (= (select v_arrayElimArr_53 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_52 0))) (< .cse0 (+ (let ((.cse4 (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_main_~l~0#1.base_72| v_arrayElimArr_53)) (.cse1 (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_main_~l~0#1.base_72| v_arrayElimArr_52))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_main_~l~0#1.base_72| v_ArrVal_1208) (select (select .cse1 .cse2) .cse3)) (+ (select (select .cse4 .cse2) .cse3) 4)))) 1))))) is different from false [2023-12-19 17:16:34,766 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:34,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 117 [2023-12-19 17:16:34,773 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:34,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 108 [2023-12-19 17:16:35,089 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:35,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 153 [2023-12-19 17:16:35,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:35,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 117 [2023-12-19 17:16:35,100 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:35,100 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:35,101 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:35,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:35,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 59 [2023-12-19 17:16:35,109 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:35,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 160 [2023-12-19 17:16:35,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 178 [2023-12-19 17:16:35,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 150 [2023-12-19 17:16:37,514 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:37,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 2021 treesize of output 2061 [2023-12-19 17:16:37,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:37,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 236 treesize of output 241 [2023-12-19 17:16:37,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:37,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 212 treesize of output 321 [2023-12-19 17:16:37,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 140 [2023-12-19 17:16:37,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 138 [2023-12-19 17:16:37,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 134 [2023-12-19 17:16:37,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-19 17:16:38,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-19 17:16:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 20 not checked. [2023-12-19 17:16:38,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566305521] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:16:38,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:16:38,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 42 [2023-12-19 17:16:38,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752014130] [2023-12-19 17:16:38,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:16:38,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-19 17:16:38,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:16:38,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-19 17:16:38,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1524, Unknown=2, NotChecked=158, Total=1806 [2023-12-19 17:16:38,294 INFO L87 Difference]: Start difference. First operand 239 states and 298 transitions. Second operand has 43 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 42 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:16:54,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:16:54,676 INFO L93 Difference]: Finished difference Result 791 states and 886 transitions. [2023-12-19 17:16:54,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2023-12-19 17:16:54,677 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 42 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-19 17:16:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:16:54,679 INFO L225 Difference]: With dead ends: 791 [2023-12-19 17:16:54,679 INFO L226 Difference]: Without dead ends: 789 [2023-12-19 17:16:54,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 67 SyntacticMatches, 5 SemanticMatches, 179 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 10886 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=3549, Invalid=28319, Unknown=2, NotChecked=710, Total=32580 [2023-12-19 17:16:54,682 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 1082 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1159 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:16:54,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 945 Invalid, 2744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1531 Invalid, 0 Unknown, 1159 Unchecked, 2.0s Time] [2023-12-19 17:16:54,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2023-12-19 17:16:54,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 335. [2023-12-19 17:16:54,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 333 states have (on average 1.2642642642642643) internal successors, (421), 334 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:16:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 421 transitions. [2023-12-19 17:16:54,746 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 421 transitions. Word has length 46 [2023-12-19 17:16:54,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:16:54,746 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 421 transitions. [2023-12-19 17:16:54,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 42 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:16:54,747 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 421 transitions. [2023-12-19 17:16:54,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-19 17:16:54,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:16:54,748 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 17:16:54,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 17:16:54,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:16:54,953 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:16:54,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:16:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash -883718928, now seen corresponding path program 2 times [2023-12-19 17:16:54,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:16:54,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505819971] [2023-12-19 17:16:54,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:16:54,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:16:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:16:56,042 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:16:56,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:16:56,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505819971] [2023-12-19 17:16:56,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505819971] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:16:56,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230879931] [2023-12-19 17:16:56,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:16:56,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:16:56,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:16:56,044 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) [2023-12-19 17:16:56,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 17:16:56,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:16:56,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:16:56,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 92 conjunts are in the unsatisfiable core [2023-12-19 17:16:56,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:16:56,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-19 17:16:56,364 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 [2023-12-19 17:16:56,378 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-12-19 17:16:56,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-12-19 17:16:56,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 17:16:56,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 15 [2023-12-19 17:16:56,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:16:56,570 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2023-12-19 17:16:56,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2023-12-19 17:16:56,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:16:56,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:56,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:56,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2023-12-19 17:16:56,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:56,587 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 53 treesize of output 36 [2023-12-19 17:16:56,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:56,604 INFO L349 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2023-12-19 17:16:56,604 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 34 treesize of output 49 [2023-12-19 17:16:56,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:16:56,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:56,801 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-12-19 17:16:56,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 147 treesize of output 88 [2023-12-19 17:16:56,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:56,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:56,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:56,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 41 [2023-12-19 17:16:56,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:16:56,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:56,834 INFO L349 Elim1Store]: treesize reduction 37, result has 47.1 percent of original size [2023-12-19 17:16:56,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 62 [2023-12-19 17:16:56,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:56,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:56,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:56,855 INFO L349 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-12-19 17:16:56,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2023-12-19 17:16:57,619 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-12-19 17:16:57,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 67 [2023-12-19 17:16:57,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:57,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-19 17:16:57,715 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-12-19 17:16:57,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 26 [2023-12-19 17:16:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:16:57,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:16:58,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:58,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 74 [2023-12-19 17:16:58,068 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:58,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 65 [2023-12-19 17:16:58,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:58,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 117 [2023-12-19 17:16:58,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:58,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 108 [2023-12-19 17:16:58,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:58,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 153 [2023-12-19 17:16:58,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:58,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 117 [2023-12-19 17:16:58,630 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:58,631 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:58,631 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:58,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:58,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 59 [2023-12-19 17:16:58,639 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:58,640 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 172 treesize of output 160 [2023-12-19 17:16:58,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 173 [2023-12-19 17:16:58,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 131 [2023-12-19 17:17:01,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:17:01,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1521 treesize of output 1569 [2023-12-19 17:17:01,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 463 treesize of output 455 [2023-12-19 17:17:01,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 455 treesize of output 451 [2023-12-19 17:17:01,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:17:01,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 204 treesize of output 313 [2023-12-19 17:17:01,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 136 [2023-12-19 17:17:01,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 134 [2023-12-19 17:17:02,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-19 17:17:02,478 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:17:02,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230879931] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:17:02,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:17:02,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 44 [2023-12-19 17:17:02,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125026494] [2023-12-19 17:17:02,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:17:02,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-19 17:17:02,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:17:02,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-19 17:17:02,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1763, Unknown=1, NotChecked=0, Total=1892 [2023-12-19 17:17:02,480 INFO L87 Difference]: Start difference. First operand 335 states and 421 transitions. Second operand has 44 states, 44 states have (on average 3.090909090909091) internal successors, (136), 44 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:17:16,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:17:20,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:18:03,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:18:03,668 INFO L93 Difference]: Finished difference Result 1029 states and 1171 transitions. [2023-12-19 17:18:03,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2023-12-19 17:18:03,670 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.090909090909091) internal successors, (136), 44 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-19 17:18:03,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:18:03,673 INFO L225 Difference]: With dead ends: 1029 [2023-12-19 17:18:03,673 INFO L226 Difference]: Without dead ends: 1027 [2023-12-19 17:18:03,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12828 ImplicationChecksByTransitivity, 53.8s TimeCoverageRelationStatistics Valid=4553, Invalid=37948, Unknown=141, NotChecked=0, Total=42642 [2023-12-19 17:18:03,676 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 1279 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 32 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 2259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-12-19 17:18:03,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 1180 Invalid, 2259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2205 Invalid, 22 Unknown, 0 Unchecked, 9.8s Time] [2023-12-19 17:18:03,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2023-12-19 17:18:03,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 316. [2023-12-19 17:18:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 314 states have (on average 1.2707006369426752) internal successors, (399), 315 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:18:03,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 399 transitions. [2023-12-19 17:18:03,751 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 399 transitions. Word has length 46 [2023-12-19 17:18:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:18:03,751 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 399 transitions. [2023-12-19 17:18:03,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.090909090909091) internal successors, (136), 44 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:18:03,752 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 399 transitions. [2023-12-19 17:18:03,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-19 17:18:03,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:18:03,753 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2023-12-19 17:18:03,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 17:18:03,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-19 17:18:03,954 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:18:03,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:18:03,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1375395050, now seen corresponding path program 1 times [2023-12-19 17:18:03,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:18:03,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390984046] [2023-12-19 17:18:03,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:18:03,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:18:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:18:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 17:18:04,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:18:04,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390984046] [2023-12-19 17:18:04,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390984046] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:18:04,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949581851] [2023-12-19 17:18:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:18:04,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:18:04,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:18:04,212 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) [2023-12-19 17:18:04,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 17:18:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:18:04,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 17:18:04,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:18:04,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-12-19 17:18:04,474 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 21 treesize of output 9 [2023-12-19 17:18:04,540 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 21 treesize of output 9 [2023-12-19 17:18:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 17:18:04,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:18:04,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-19 17:18:04,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-19 17:18:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 17:18:04,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949581851] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:18:04,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:18:04,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 20 [2023-12-19 17:18:04,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432813487] [2023-12-19 17:18:04,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:18:04,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 17:18:04,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:18:04,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 17:18:04,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2023-12-19 17:18:04,770 INFO L87 Difference]: Start difference. First operand 316 states and 399 transitions. Second operand has 20 states, 20 states have (on average 2.8) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:18:05,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:18:05,289 INFO L93 Difference]: Finished difference Result 655 states and 812 transitions. [2023-12-19 17:18:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 17:18:05,290 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-19 17:18:05,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:18:05,291 INFO L225 Difference]: With dead ends: 655 [2023-12-19 17:18:05,291 INFO L226 Difference]: Without dead ends: 513 [2023-12-19 17:18:05,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2023-12-19 17:18:05,292 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 54 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:18:05,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 131 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:18:05,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-12-19 17:18:05,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 350. [2023-12-19 17:18:05,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 348 states have (on average 1.264367816091954) internal successors, (440), 349 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:18:05,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 440 transitions. [2023-12-19 17:18:05,400 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 440 transitions. Word has length 46 [2023-12-19 17:18:05,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:18:05,400 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 440 transitions. [2023-12-19 17:18:05,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:18:05,401 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 440 transitions. [2023-12-19 17:18:05,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-19 17:18:05,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:18:05,402 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 17:18:05,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 17:18:05,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:18:05,605 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:18:05,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:18:05,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1533368852, now seen corresponding path program 3 times [2023-12-19 17:18:05,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:18:05,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119059708] [2023-12-19 17:18:05,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:18:05,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:18:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:18:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:18:07,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:18:07,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119059708] [2023-12-19 17:18:07,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119059708] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:18:07,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369715020] [2023-12-19 17:18:07,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:18:07,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:18:07,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:18:07,118 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) [2023-12-19 17:18:07,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 17:18:07,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-19 17:18:07,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:18:07,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-19 17:18:07,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:18:07,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-19 17:18:07,395 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-12-19 17:18:07,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-12-19 17:18:07,405 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 [2023-12-19 17:18:07,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 17:18:07,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-19 17:18:07,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:18:07,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:07,568 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 53 treesize of output 36 [2023-12-19 17:18:07,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:07,591 INFO L349 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2023-12-19 17:18:07,591 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 34 treesize of output 49 [2023-12-19 17:18:07,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2023-12-19 17:18:07,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:07,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-12-19 17:18:07,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:18:07,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:18:07,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:07,917 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-12-19 17:18:07,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 70 [2023-12-19 17:18:07,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:07,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:07,942 INFO L349 Elim1Store]: treesize reduction 32, result has 47.5 percent of original size [2023-12-19 17:18:07,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 41 [2023-12-19 17:18:07,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:07,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:07,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 41 [2023-12-19 17:18:07,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:18:07,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:07,971 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-12-19 17:18:07,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 41 [2023-12-19 17:18:08,978 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-12-19 17:18:08,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 64 [2023-12-19 17:18:08,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-19 17:18:09,063 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-19 17:18:09,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2023-12-19 17:18:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 14 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:18:09,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:18:09,410 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:09,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 72 [2023-12-19 17:18:09,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:09,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 63 [2023-12-19 17:18:09,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:09,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 117 [2023-12-19 17:18:09,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:09,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 108 [2023-12-19 17:18:09,747 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1558 (Array Int Int)) (v_arrayElimArr_69 (Array Int Int)) (v_ArrVal_1552 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_89| Int) (v_arrayElimArr_71 (Array Int Int)) (v_arrayElimArr_70 (Array Int Int)) (v_arrayElimArr_72 (Array Int Int))) (let ((.cse0 (select v_ArrVal_1552 4)) (.cse1 (select v_arrayElimArr_69 0))) (or (< |c_ULTIMATE.start_main_~min~0#1| (+ .cse0 1)) (not (= (select v_arrayElimArr_72 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (< .cse0 (+ (let ((.cse5 (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_arrayElimArr_71) |v_ULTIMATE.start_main_~l~0#1.base_89| v_arrayElimArr_70)) (.cse2 (store (store |c_#memory_$Pointer$#1.base| .cse1 v_arrayElimArr_72) |v_ULTIMATE.start_main_~l~0#1.base_89| v_arrayElimArr_69))) (let ((.cse3 (select (select .cse2 .cse1) 0)) (.cse4 (select (select .cse5 .cse1) 0))) (select (select (store (store |c_#memory_int#1| .cse1 v_ArrVal_1552) |v_ULTIMATE.start_main_~l~0#1.base_89| v_ArrVal_1558) (select (select .cse2 .cse3) .cse4)) (+ (select (select .cse5 .cse3) .cse4) 4)))) 1)) (not (= (select v_arrayElimArr_71 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select v_arrayElimArr_70 0) 0)) (not (= (select |c_#valid| .cse1) 0)) (not (= (select (store |c_#valid| .cse1 1) |v_ULTIMATE.start_main_~l~0#1.base_89|) 0))))) is different from false [2023-12-19 17:18:09,907 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:09,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 153 [2023-12-19 17:18:09,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:09,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 117 [2023-12-19 17:18:09,930 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:18:09,930 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:18:09,931 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:18:09,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:09,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 59 [2023-12-19 17:18:09,943 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:18:09,946 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 356 treesize of output 338 [2023-12-19 17:18:09,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 161 [2023-12-19 17:18:09,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 131 [2023-12-19 17:18:11,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:11,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2695 treesize of output 2616 [2023-12-19 17:18:11,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 873 treesize of output 857 [2023-12-19 17:18:11,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 857 treesize of output 829 [2023-12-19 17:18:11,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 829 treesize of output 825 [2023-12-19 17:18:11,339 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:11,340 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 825 treesize of output 800 [2023-12-19 17:18:11,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 791 treesize of output 771 [2023-12-19 17:18:11,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 771 treesize of output 767 [2023-12-19 17:18:11,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 767 treesize of output 743 [2023-12-19 17:18:11,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 743 treesize of output 735 [2023-12-19 17:18:11,424 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:11,424 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 735 treesize of output 706 [2023-12-19 17:18:11,452 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:11,452 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 697 treesize of output 660 [2023-12-19 17:18:11,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 651 treesize of output 643 [2023-12-19 17:18:11,511 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:11,511 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 643 treesize of output 626 [2023-12-19 17:18:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2023-12-19 17:18:15,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369715020] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:18:15,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:18:15,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 37 [2023-12-19 17:18:15,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688778831] [2023-12-19 17:18:15,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:18:15,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-19 17:18:15,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:18:15,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-19 17:18:15,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1145, Unknown=1, NotChecked=68, Total=1332 [2023-12-19 17:18:15,972 INFO L87 Difference]: Start difference. First operand 350 states and 440 transitions. Second operand has 37 states, 37 states have (on average 3.4864864864864864) internal successors, (129), 37 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:18:27,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:18:27,162 INFO L93 Difference]: Finished difference Result 489 states and 584 transitions. [2023-12-19 17:18:27,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-19 17:18:27,163 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.4864864864864864) internal successors, (129), 37 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-19 17:18:27,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:18:27,164 INFO L225 Difference]: With dead ends: 489 [2023-12-19 17:18:27,165 INFO L226 Difference]: Without dead ends: 487 [2023-12-19 17:18:27,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 79 SyntacticMatches, 6 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=1142, Invalid=5821, Unknown=13, NotChecked=164, Total=7140 [2023-12-19 17:18:27,166 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 310 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 11 mSolverCounterUnsat, 43 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 43 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-19 17:18:27,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 809 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1373 Invalid, 43 Unknown, 164 Unchecked, 3.9s Time] [2023-12-19 17:18:27,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-12-19 17:18:27,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 104. [2023-12-19 17:18:27,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 103 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:18:27,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2023-12-19 17:18:27,211 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 46 [2023-12-19 17:18:27,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:18:27,211 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2023-12-19 17:18:27,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.4864864864864864) internal successors, (129), 37 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:18:27,211 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2023-12-19 17:18:27,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-19 17:18:27,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:18:27,212 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-12-19 17:18:27,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 17:18:27,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:18:27,419 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:18:27,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:18:27,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1227621270, now seen corresponding path program 3 times [2023-12-19 17:18:27,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:18:27,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870027805] [2023-12-19 17:18:27,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:18:27,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:18:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:18:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:18:28,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:18:28,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870027805] [2023-12-19 17:18:28,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870027805] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:18:28,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082867024] [2023-12-19 17:18:28,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:18:28,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:18:28,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:18:28,648 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) [2023-12-19 17:18:28,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 17:18:28,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-19 17:18:28,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:18:28,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 110 conjunts are in the unsatisfiable core [2023-12-19 17:18:28,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:18:28,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-19 17:18:28,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-12-19 17:18:29,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 17:18:29,129 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-12-19 17:18:29,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 28 [2023-12-19 17:18:29,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-19 17:18:29,147 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 [2023-12-19 17:18:29,178 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-12-19 17:18:29,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-12-19 17:18:29,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:18:29,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:29,411 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 68 treesize of output 45 [2023-12-19 17:18:29,444 INFO L349 Elim1Store]: treesize reduction 33, result has 45.0 percent of original size [2023-12-19 17:18:29,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 34 [2023-12-19 17:18:29,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:29,481 INFO L349 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2023-12-19 17:18:29,482 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 34 treesize of output 49 [2023-12-19 17:18:29,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:29,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-12-19 17:18:29,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:18:29,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-12-19 17:18:29,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:29,998 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-12-19 17:18:29,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 70 [2023-12-19 17:18:30,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:30,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:30,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:30,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 41 [2023-12-19 17:18:30,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-12-19 17:18:30,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:30,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:30,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:30,058 INFO L349 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-12-19 17:18:30,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2023-12-19 17:18:30,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:30,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2023-12-19 17:18:31,723 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-12-19 17:18:31,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 132 treesize of output 62 [2023-12-19 17:18:31,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-19 17:18:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:18:31,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:18:32,566 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:32,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 72 [2023-12-19 17:18:32,575 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:32,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 63 [2023-12-19 17:18:32,619 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_77 (Array Int Int)) (v_arrayElimArr_78 (Array Int Int)) (v_ArrVal_1691 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_96| Int)) (let ((.cse2 (store |c_#memory_int#1| |v_ULTIMATE.start_main_~l~0#1.base_96| v_ArrVal_1691))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4))) (.cse0 (select v_ArrVal_1691 4))) (or (< 2147483647 .cse0) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_77 0))) (not (= (store (store (select |c_#memory_int#1| |v_ULTIMATE.start_main_~l~0#1.base_96|) 4 .cse0) 0 (select v_ArrVal_1691 0)) v_ArrVal_1691)) (< |c_ULTIMATE.start_main_~max~0#1| .cse1) (< .cse1 |c_ULTIMATE.start_main_~min~0#1|) (< (let ((.cse6 (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_main_~l~0#1.base_96| v_arrayElimArr_78)) (.cse3 (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_main_~l~0#1.base_96| v_arrayElimArr_77))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (select (select .cse2 (select (select .cse3 .cse4) .cse5)) (+ 4 (select (select .cse6 .cse4) .cse5))))) (+ |c_ULTIMATE.start_main_~max~0#1| 1)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_96|) 0)) (< .cse0 |c_ULTIMATE.start_main_~min~0#1|) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_78 0))))))) is different from false [2023-12-19 17:18:33,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:33,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 125 [2023-12-19 17:18:33,021 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:33,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 116 [2023-12-19 17:18:33,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:33,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 191 treesize of output 166 [2023-12-19 17:18:33,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:18:33,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 130 [2023-12-19 17:18:33,681 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:18:33,682 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:18:33,683 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:18:33,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:18:33,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 72 [2023-12-19 17:18:33,696 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:18:33,700 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 224 treesize of output 212 [2023-12-19 17:18:33,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 315 treesize of output 271 [2023-12-19 17:18:33,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 227 [2023-12-19 17:18:43,120 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-12-19 17:18:43,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 468 treesize of output 1 [2023-12-19 17:18:43,122 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2023-12-19 17:18:43,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082867024] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:18:43,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:18:43,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 18] total 49 [2023-12-19 17:18:43,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173703268] [2023-12-19 17:18:43,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:18:43,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-19 17:18:43,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:18:43,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-19 17:18:43,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2040, Unknown=2, NotChecked=92, Total=2352 [2023-12-19 17:18:43,124 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 49 states, 49 states have (on average 2.816326530612245) internal successors, (138), 49 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:19:01,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:19:17,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:19:22,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:19:34,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:19:35,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:19:40,253 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] [2023-12-19 17:19:50,442 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_arrayElimArr_77 (Array Int Int)) (v_arrayElimArr_78 (Array Int Int)) (v_ArrVal_1691 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_96| Int)) (let ((.cse3 (store |c_#memory_int#1| |v_ULTIMATE.start_main_~l~0#1.base_96| v_ArrVal_1691))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~l~0#1.base|) (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4))) (.cse1 (select v_ArrVal_1691 4))) (or (< 2147483647 .cse1) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_77 0))) (not (= (store (store (select |c_#memory_int#1| |v_ULTIMATE.start_main_~l~0#1.base_96|) 4 .cse1) 0 (select v_ArrVal_1691 0)) v_ArrVal_1691)) (< |c_ULTIMATE.start_main_~max~0#1| .cse2) (< .cse2 |c_ULTIMATE.start_main_~min~0#1|) (< (let ((.cse7 (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_main_~l~0#1.base_96| v_arrayElimArr_78)) (.cse4 (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_main_~l~0#1.base_96| v_arrayElimArr_77))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (select (select .cse3 (select (select .cse4 .cse5) .cse6)) (+ 4 (select (select .cse7 .cse5) .cse6))))) (+ |c_ULTIMATE.start_main_~max~0#1| 1)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_96|) 0)) (< .cse1 |c_ULTIMATE.start_main_~min~0#1|) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_78 0))))))))) (and (or (< |c_ULTIMATE.start_main_#t~mem6#1| |c_ULTIMATE.start_main_~min~0#1|) .cse0) .cse0)) is different from false [2023-12-19 17:19:54,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:19:58,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:20:00,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:20:12,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:20:26,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:20:36,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:20:40,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:20:46,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:20:50,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:20:57,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:21:01,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:21:16,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:21:22,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:21:26,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:21:37,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:21:42,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:21:43,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:21:47,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:21:52,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:21:56,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:21:58,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:22:02,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:22:23,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:22:27,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:22:32,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:22:37,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:22:41,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:22:46,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:23:23,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:23:41,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:23:51,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:24:29,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:24:34,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:24:47,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:24:53,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:24:57,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:25:02,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:25:18,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:25:22,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:25:30,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:25:34,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:25:48,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:25:52,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:25:57,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:26:01,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:26:16,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:26:34,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:26:39,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:27:11,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:27:15,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:27:19,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:27:24,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:28:02,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:28:06,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:28:11,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:28:36,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:28:40,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:28:45,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-19 17:28:50,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-12-19 17:29:26,784 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 17:29:26,784 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 [2023-12-19 17:29:27,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 17:29:27,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2023-12-19 17:29:27,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 150 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7708 ImplicationChecksByTransitivity, 361.1s TimeCoverageRelationStatistics Valid=1456, Invalid=20788, Unknown=114, NotChecked=594, Total=22952 [2023-12-19 17:29:27,877 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 483 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 2951 mSolverCounterSat, 39 mSolverCounterUnsat, 99 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 268.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 3539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2951 IncrementalHoareTripleChecker+Invalid, 99 IncrementalHoareTripleChecker+Unknown, 450 IncrementalHoareTripleChecker+Unchecked, 270.8s IncrementalHoareTripleChecker+Time [2023-12-19 17:29:27,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 506 Invalid, 3539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2951 Invalid, 99 Unknown, 450 Unchecked, 270.8s Time] [2023-12-19 17:29:27,878 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-19 17:29:27,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 17:29:27,879 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (104states) and FLOYD_HOARE automaton (currently 117 states, 49 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 152 known predicates. [2023-12-19 17:29:27,880 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-19 17:29:27,888 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:29:27,905 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 17:29:27,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 05:29:27 BoogieIcfgContainer [2023-12-19 17:29:27,921 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 17:29:27,921 INFO L158 Benchmark]: Toolchain (without parser) took 844108.15ms. Allocated memory was 264.2MB in the beginning and 562.0MB in the end (delta: 297.8MB). Free memory was 212.1MB in the beginning and 274.3MB in the end (delta: -62.3MB). Peak memory consumption was 236.6MB. Max. memory is 8.0GB. [2023-12-19 17:29:27,921 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 183.5MB. Free memory is still 130.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 17:29:27,921 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.62ms. Allocated memory is still 264.2MB. Free memory was 211.6MB in the beginning and 194.2MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-19 17:29:27,921 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.92ms. Allocated memory is still 264.2MB. Free memory was 194.2MB in the beginning and 192.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 17:29:27,921 INFO L158 Benchmark]: Boogie Preprocessor took 46.98ms. Allocated memory is still 264.2MB. Free memory was 192.6MB in the beginning and 190.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 17:29:27,921 INFO L158 Benchmark]: RCFGBuilder took 303.55ms. Allocated memory is still 264.2MB. Free memory was 190.1MB in the beginning and 178.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-19 17:29:27,922 INFO L158 Benchmark]: TraceAbstraction took 843352.73ms. Allocated memory was 264.2MB in the beginning and 562.0MB in the end (delta: 297.8MB). Free memory was 177.5MB in the beginning and 274.3MB in the end (delta: -96.9MB). Peak memory consumption was 202.0MB. Max. memory is 8.0GB. [2023-12-19 17:29:27,922 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 183.5MB. Free memory is still 130.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 357.62ms. Allocated memory is still 264.2MB. Free memory was 211.6MB in the beginning and 194.2MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.92ms. Allocated memory is still 264.2MB. Free memory was 194.2MB in the beginning and 192.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.98ms. Allocated memory is still 264.2MB. Free memory was 192.6MB in the beginning and 190.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 303.55ms. Allocated memory is still 264.2MB. Free memory was 190.1MB in the beginning and 178.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 843352.73ms. Allocated memory was 264.2MB in the beginning and 562.0MB in the end (delta: 297.8MB). Free memory was 177.5MB in the beginning and 274.3MB in the end (delta: -96.9MB). Peak memory consumption was 202.0MB. 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: 591]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 591). Cancelled while NwaCegarLoop was constructing difference of abstraction (104states) and FLOYD_HOARE automaton (currently 117 states, 49 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 152 known predicates. - TimeoutResultAtElement [Line: 589]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 589). Cancelled while NwaCegarLoop was constructing difference of abstraction (104states) and FLOYD_HOARE automaton (currently 117 states, 49 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 152 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 843.3s, OverallIterations: 25, TraceHistogramMax: 5, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 765.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 244 mSolverCounterUnknown, 5616 SdHoareTripleChecker+Valid, 294.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5616 mSDsluCounter, 8064 SdHoareTripleChecker+Invalid, 290.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2589 IncrementalHoareTripleChecker+Unchecked, 7514 mSDsCounter, 269 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18475 IncrementalHoareTripleChecker+Invalid, 21577 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 269 mSolverCounterUnsat, 550 mSDtfsCounter, 18475 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2597 GetRequests, 1160 SyntacticMatches, 38 SemanticMatches, 1398 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 47124 ImplicationChecksByTransitivity, 476.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=350occurred in iteration=23, InterpolantAutomatonStates: 895, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 24 MinimizatonAttempts, 2837 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 69.7s InterpolantComputationTime, 1419 NumberOfCodeBlocks, 1419 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 2030 ConstructedInterpolants, 303 QuantifiedInterpolants, 98065 SizeOfPredicates, 258 NumberOfNonLiveVariables, 4007 ConjunctsInSsa, 1078 ConjunctsInUnsatCore, 63 InterpolantComputations, 6 PerfectInterpolantSequences, 436/2141 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