/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/hash_fun.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 17:15:15,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 17:15:15,524 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 17:15:15,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 17:15:15,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 17:15:15,541 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 17:15:15,542 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 17:15:15,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 17:15:15,542 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 17:15:15,543 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 17:15:15,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 17:15:15,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 17:15:15,543 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 17:15:15,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 17:15:15,544 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 17:15:15,544 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 17:15:15,544 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 17:15:15,545 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 17:15:15,545 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 17:15:15,545 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 17:15:15,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 17:15:15,546 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 17:15:15,546 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 17:15:15,546 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 17:15:15,546 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 17:15:15,546 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 17:15:15,546 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 17:15:15,547 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 17:15:15,547 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 17:15:15,547 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 17:15:15,547 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 17:15:15,547 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 17:15:15,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 17:15:15,548 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 17:15:15,548 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 17:15:15,548 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 17:15:15,548 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 17:15:15,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 17:15:15,548 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 17:15:15,549 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 17:15:15,549 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 17:15:15,549 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 17:15:15,549 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 17:15:15,549 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 17:15:15,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 17:15:15,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 17:15:15,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 17:15:15,697 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 17:15:15,697 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 17:15:15,698 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/hash_fun.i [2023-12-19 17:15:16,733 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 17:15:16,927 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 17:15:16,928 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/hash_fun.i [2023-12-19 17:15:16,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/194c7cb00/a6f522fa9b344a76949ba6b628471d7e/FLAG84995920e [2023-12-19 17:15:17,335 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/194c7cb00/a6f522fa9b344a76949ba6b628471d7e [2023-12-19 17:15:17,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 17:15:17,338 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 17:15:17,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 17:15:17,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 17:15:17,342 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 17:15:17,342 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:15:17" (1/1) ... [2023-12-19 17:15:17,343 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b1a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:17, skipping insertion in model container [2023-12-19 17:15:17,343 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:15:17" (1/1) ... [2023-12-19 17:15:17,381 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 17:15:17,578 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/hash_fun.i[23732,23745] [2023-12-19 17:15:17,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 17:15:17,599 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 17:15:17,626 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/hash_fun.i[23732,23745] [2023-12-19 17:15:17,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 17:15:17,646 INFO L206 MainTranslator]: Completed translation [2023-12-19 17:15:17,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:17 WrapperNode [2023-12-19 17:15:17,647 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 17:15:17,648 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 17:15:17,648 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 17:15:17,648 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 17:15:17,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:17" (1/1) ... [2023-12-19 17:15:17,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:17" (1/1) ... [2023-12-19 17:15:17,693 INFO L138 Inliner]: procedures = 125, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2023-12-19 17:15:17,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 17:15:17,694 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 17:15:17,694 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 17:15:17,694 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 17:15:17,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:17" (1/1) ... [2023-12-19 17:15:17,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:17" (1/1) ... [2023-12-19 17:15:17,702 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:17" (1/1) ... [2023-12-19 17:15:17,712 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 8, 5]. 53 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 4 writes are split as follows [0, 2, 2]. [2023-12-19 17:15:17,712 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:17" (1/1) ... [2023-12-19 17:15:17,712 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:17" (1/1) ... [2023-12-19 17:15:17,721 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:17" (1/1) ... [2023-12-19 17:15:17,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:17" (1/1) ... [2023-12-19 17:15:17,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:17" (1/1) ... [2023-12-19 17:15:17,724 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:17" (1/1) ... [2023-12-19 17:15:17,727 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 17:15:17,735 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 17:15:17,735 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 17:15:17,736 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 17:15:17,736 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:17" (1/1) ... [2023-12-19 17:15:17,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 17:15:17,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:17,775 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 17:15:17,791 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 17:15:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-19 17:15:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-19 17:15:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-19 17:15:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-19 17:15:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-19 17:15:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-19 17:15:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-19 17:15:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 17:15:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-19 17:15:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-12-19 17:15:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-12-19 17:15:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-12-19 17:15:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-12-19 17:15:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-12-19 17:15:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-12-19 17:15:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-19 17:15:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-12-19 17:15:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-12-19 17:15:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-12-19 17:15:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 17:15:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 17:15:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 17:15:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 17:15:17,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 17:15:17,918 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 17:15:17,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 17:15:18,029 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 17:15:18,087 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 17:15:18,087 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 17:15:18,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:15:18 BoogieIcfgContainer [2023-12-19 17:15:18,087 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 17:15:18,089 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 17:15:18,089 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 17:15:18,091 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 17:15:18,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 05:15:17" (1/3) ... [2023-12-19 17:15:18,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b1b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:15:18, skipping insertion in model container [2023-12-19 17:15:18,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:15:17" (2/3) ... [2023-12-19 17:15:18,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b1b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:15:18, skipping insertion in model container [2023-12-19 17:15:18,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:15:18" (3/3) ... [2023-12-19 17:15:18,121 INFO L112 eAbstractionObserver]: Analyzing ICFG hash_fun.i [2023-12-19 17:15:18,141 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 17:15:18,141 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 17:15:18,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 17:15:18,197 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;@7165e55b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 17:15:18,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 17:15:18,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 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 17:15:18,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-19 17:15:18,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:18,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:18,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:18,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:18,217 INFO L85 PathProgramCache]: Analyzing trace with hash 223023209, now seen corresponding path program 1 times [2023-12-19 17:15:18,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:18,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982441289] [2023-12-19 17:15:18,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:18,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:18,345 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 17:15:18,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:18,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982441289] [2023-12-19 17:15:18,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982441289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:15:18,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:15:18,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 17:15:18,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293985771] [2023-12-19 17:15:18,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:15:18,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 17:15:18,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:18,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 17:15:18,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 17:15:18,400 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:18,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:18,426 INFO L93 Difference]: Finished difference Result 24 states and 34 transitions. [2023-12-19 17:15:18,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 17:15:18,429 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-19 17:15:18,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:18,434 INFO L225 Difference]: With dead ends: 24 [2023-12-19 17:15:18,434 INFO L226 Difference]: Without dead ends: 13 [2023-12-19 17:15:18,436 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 17:15:18,438 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:18,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:15:18,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-19 17:15:18,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-19 17:15:18,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:18,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2023-12-19 17:15:18,459 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 7 [2023-12-19 17:15:18,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:18,459 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2023-12-19 17:15:18,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:18,460 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2023-12-19 17:15:18,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-19 17:15:18,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:18,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:18,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 17:15:18,461 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:18,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:18,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2044429669, now seen corresponding path program 1 times [2023-12-19 17:15:18,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:18,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604481450] [2023-12-19 17:15:18,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:18,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:18,572 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 17:15:18,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:18,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604481450] [2023-12-19 17:15:18,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604481450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:15:18,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:15:18,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 17:15:18,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722624712] [2023-12-19 17:15:18,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:15:18,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 17:15:18,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:18,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 17:15:18,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 17:15:18,575 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states 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 17:15:18,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:18,612 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2023-12-19 17:15:18,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 17:15:18,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-12-19 17:15:18,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:18,613 INFO L225 Difference]: With dead ends: 27 [2023-12-19 17:15:18,614 INFO L226 Difference]: Without dead ends: 18 [2023-12-19 17:15:18,614 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 17:15:18,615 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:18,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 37 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:15:18,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-19 17:15:18,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-19 17:15:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 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 17:15:18,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2023-12-19 17:15:18,618 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 8 [2023-12-19 17:15:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:18,618 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2023-12-19 17:15:18,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states 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 17:15:18,618 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2023-12-19 17:15:18,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-19 17:15:18,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:18,619 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:18,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 17:15:18,619 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:18,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:18,619 INFO L85 PathProgramCache]: Analyzing trace with hash 32114, now seen corresponding path program 1 times [2023-12-19 17:15:18,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:18,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628334831] [2023-12-19 17:15:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:18,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:19,014 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 17:15:19,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:19,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628334831] [2023-12-19 17:15:19,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628334831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:15:19,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:15:19,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 17:15:19,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100841154] [2023-12-19 17:15:19,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:15:19,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 17:15:19,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:19,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 17:15:19,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 17:15:19,026 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 17:15:19,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:19,080 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2023-12-19 17:15:19,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 17:15:19,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 17:15:19,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:19,083 INFO L225 Difference]: With dead ends: 28 [2023-12-19 17:15:19,083 INFO L226 Difference]: Without dead ends: 26 [2023-12-19 17:15:19,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 17:15:19,085 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:19,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 27 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:15:19,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-19 17:15:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2023-12-19 17:15:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:19,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2023-12-19 17:15:19,095 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 13 [2023-12-19 17:15:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:19,095 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2023-12-19 17:15:19,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 17:15:19,096 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2023-12-19 17:15:19,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-19 17:15:19,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:19,096 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:19,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 17:15:19,096 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:19,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:19,098 INFO L85 PathProgramCache]: Analyzing trace with hash 34036, now seen corresponding path program 1 times [2023-12-19 17:15:19,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:19,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951136242] [2023-12-19 17:15:19,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:19,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:19,295 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 17:15:19,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:19,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951136242] [2023-12-19 17:15:19,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951136242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:15:19,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:15:19,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 17:15:19,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232625056] [2023-12-19 17:15:19,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:15:19,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 17:15:19,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:19,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 17:15:19,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 17:15:19,297 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 17:15:19,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:19,345 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2023-12-19 17:15:19,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 17:15:19,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 17:15:19,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:19,346 INFO L225 Difference]: With dead ends: 30 [2023-12-19 17:15:19,346 INFO L226 Difference]: Without dead ends: 23 [2023-12-19 17:15:19,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 17:15:19,347 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:19,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:15:19,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-19 17:15:19,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2023-12-19 17:15:19,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-12-19 17:15:19,363 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 13 [2023-12-19 17:15:19,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:19,363 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-12-19 17:15:19,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 17:15:19,364 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-12-19 17:15:19,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-19 17:15:19,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:19,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:19,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 17:15:19,365 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:19,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:19,366 INFO L85 PathProgramCache]: Analyzing trace with hash -293740875, now seen corresponding path program 1 times [2023-12-19 17:15:19,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:19,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658161560] [2023-12-19 17:15:19,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:19,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:19,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:19,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658161560] [2023-12-19 17:15:19,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658161560] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:19,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631848290] [2023-12-19 17:15:19,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:19,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:19,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:19,797 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 17:15:19,851 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 17:15:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:19,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 17:15:19,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:19,970 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 30 treesize of output 11 [2023-12-19 17:15:19,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:19,983 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 30 treesize of output 11 [2023-12-19 17:15:19,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-12-19 17:15:20,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2023-12-19 17:15:20,058 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 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:20,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:20,151 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 18 treesize of output 16 [2023-12-19 17:15:20,156 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 18 treesize of output 16 [2023-12-19 17:15:20,168 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:20,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 10 [2023-12-19 17:15:20,174 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:20,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 10 [2023-12-19 17:15:20,176 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 22 treesize of output 18 [2023-12-19 17:15:20,179 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 17:15:20,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:20,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631848290] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:20,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:20,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-12-19 17:15:20,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049145596] [2023-12-19 17:15:20,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:20,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 17:15:20,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:20,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 17:15:20,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 17:15:20,195 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 17:15:20,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:20,242 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2023-12-19 17:15:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 17:15:20,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 17:15:20,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:20,243 INFO L225 Difference]: With dead ends: 41 [2023-12-19 17:15:20,243 INFO L226 Difference]: Without dead ends: 27 [2023-12-19 17:15:20,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 17:15:20,244 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:20,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 50 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:15:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-19 17:15:20,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-12-19 17:15:20,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 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 17:15:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2023-12-19 17:15:20,247 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 18 [2023-12-19 17:15:20,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:20,247 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2023-12-19 17:15:20,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 17:15:20,247 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2023-12-19 17:15:20,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 17:15:20,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:20,248 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:20,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 17:15:20,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:20,453 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:20,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:20,454 INFO L85 PathProgramCache]: Analyzing trace with hash 879356546, now seen corresponding path program 2 times [2023-12-19 17:15:20,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:20,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657924862] [2023-12-19 17:15:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:20,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:21,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:21,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657924862] [2023-12-19 17:15:21,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657924862] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:21,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146754372] [2023-12-19 17:15:21,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:15:21,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:21,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:21,080 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 17:15:21,081 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 17:15:21,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:15:21,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:15:21,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-19 17:15:21,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:21,193 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 17:15:21,195 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 10 treesize of output 9 [2023-12-19 17:15:21,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2023-12-19 17:15:21,202 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 17:15:21,245 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 34 treesize of output 15 [2023-12-19 17:15:21,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:21,250 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 30 treesize of output 17 [2023-12-19 17:15:21,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 26 [2023-12-19 17:15:21,262 INFO L349 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-12-19 17:15:21,263 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 23 treesize of output 23 [2023-12-19 17:15:21,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:21,274 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 30 treesize of output 11 [2023-12-19 17:15:21,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:21,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 40 [2023-12-19 17:15:21,357 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 33 treesize of output 21 [2023-12-19 17:15:21,362 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 17:15:21,382 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 17:15:21,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-19 17:15:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:21,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:21,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:21,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146754372] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:21,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:21,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2023-12-19 17:15:21,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716448868] [2023-12-19 17:15:21,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:21,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 17:15:21,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:21,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 17:15:21,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-19 17:15:21,491 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 17:15:21,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:21,617 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2023-12-19 17:15:21,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 17:15:21,618 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-19 17:15:21,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:21,618 INFO L225 Difference]: With dead ends: 38 [2023-12-19 17:15:21,618 INFO L226 Difference]: Without dead ends: 36 [2023-12-19 17:15:21,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-19 17:15:21,619 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 30 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:21,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 60 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:15:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-19 17:15:21,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2023-12-19 17:15:21,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:21,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-12-19 17:15:21,623 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 23 [2023-12-19 17:15:21,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:21,623 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-12-19 17:15:21,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 17:15:21,623 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-12-19 17:15:21,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 17:15:21,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:21,624 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:15:21,639 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 17:15:21,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-19 17:15:21,829 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:21,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:21,829 INFO L85 PathProgramCache]: Analyzing trace with hash 879358468, now seen corresponding path program 1 times [2023-12-19 17:15:21,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:21,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547319935] [2023-12-19 17:15:21,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:21,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:22,201 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:22,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:22,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547319935] [2023-12-19 17:15:22,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547319935] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:22,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719830071] [2023-12-19 17:15:22,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:22,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:22,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:22,219 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 17:15:22,265 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 17:15:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:22,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-19 17:15:22,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:22,347 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 17:15:22,349 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 10 treesize of output 9 [2023-12-19 17:15:22,353 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 27 treesize of output 1 [2023-12-19 17:15:22,355 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 17:15:22,387 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 34 treesize of output 15 [2023-12-19 17:15:22,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 26 [2023-12-19 17:15:22,394 INFO L349 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-12-19 17:15:22,394 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 23 treesize of output 23 [2023-12-19 17:15:22,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2023-12-19 17:15:22,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:22,405 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 30 treesize of output 11 [2023-12-19 17:15:22,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 40 [2023-12-19 17:15:22,477 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 33 treesize of output 21 [2023-12-19 17:15:22,481 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 17:15:22,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:22,499 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 17:15:22,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-19 17:15:22,504 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:22,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:22,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719830071] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:22,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:22,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2023-12-19 17:15:22,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818839834] [2023-12-19 17:15:22,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:22,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 17:15:22,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:22,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 17:15:22,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-19 17:15:22,601 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 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 17:15:22,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:22,727 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-12-19 17:15:22,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 17:15:22,727 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 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) Word has length 23 [2023-12-19 17:15:22,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:22,727 INFO L225 Difference]: With dead ends: 40 [2023-12-19 17:15:22,727 INFO L226 Difference]: Without dead ends: 33 [2023-12-19 17:15:22,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-19 17:15:22,728 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:22,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 72 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:15:22,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-19 17:15:22,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2023-12-19 17:15:22,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:22,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2023-12-19 17:15:22,731 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 23 [2023-12-19 17:15:22,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:22,731 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2023-12-19 17:15:22,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 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 17:15:22,731 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2023-12-19 17:15:22,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-19 17:15:22,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:22,732 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-12-19 17:15:22,760 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 17:15:22,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:22,939 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:22,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:22,940 INFO L85 PathProgramCache]: Analyzing trace with hash 792599461, now seen corresponding path program 3 times [2023-12-19 17:15:22,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:22,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18409304] [2023-12-19 17:15:22,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:22,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:23,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:23,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18409304] [2023-12-19 17:15:23,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18409304] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:23,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787029468] [2023-12-19 17:15:23,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:15:23,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:23,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:23,394 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 17:15:23,419 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 17:15:23,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-19 17:15:23,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:15:23,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-19 17:15:23,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:23,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-12-19 17:15:23,537 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 10 treesize of output 9 [2023-12-19 17:15:23,540 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 30 treesize of output 11 [2023-12-19 17:15:23,543 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 30 treesize of output 11 [2023-12-19 17:15:23,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:23,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:23,582 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 46 treesize of output 30 [2023-12-19 17:15:23,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 31 [2023-12-19 17:15:23,594 INFO L349 Elim1Store]: treesize reduction 49, result has 23.4 percent of original size [2023-12-19 17:15:23,594 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 46 treesize of output 30 [2023-12-19 17:15:23,603 INFO L349 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-12-19 17:15:23,603 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 23 treesize of output 23 [2023-12-19 17:15:23,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:23,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 49 [2023-12-19 17:15:23,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:23,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2023-12-19 17:15:23,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:23,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:23,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:23,998 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 103 treesize of output 94 [2023-12-19 17:15:24,003 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 113 treesize of output 111 [2023-12-19 17:15:24,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:24,010 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 102 treesize of output 104 [2023-12-19 17:15:24,019 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:24,019 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 85 treesize of output 90 [2023-12-19 17:15:24,057 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 17:15:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:24,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787029468] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:24,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:24,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-12-19 17:15:24,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521993987] [2023-12-19 17:15:24,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:24,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 17:15:24,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:24,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 17:15:24,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 17:15:24,068 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 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 17:15:24,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:24,193 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2023-12-19 17:15:24,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 17:15:24,193 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 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 28 [2023-12-19 17:15:24,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:24,193 INFO L225 Difference]: With dead ends: 56 [2023-12-19 17:15:24,193 INFO L226 Difference]: Without dead ends: 37 [2023-12-19 17:15:24,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-19 17:15:24,194 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:24,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:15:24,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-19 17:15:24,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-12-19 17:15:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 36 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 17:15:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2023-12-19 17:15:24,197 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 28 [2023-12-19 17:15:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:24,197 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2023-12-19 17:15:24,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 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 17:15:24,197 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2023-12-19 17:15:24,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-19 17:15:24,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:24,198 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2023-12-19 17:15:24,205 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 17:15:24,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:24,403 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:24,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:24,404 INFO L85 PathProgramCache]: Analyzing trace with hash 217811762, now seen corresponding path program 4 times [2023-12-19 17:15:24,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:24,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020047403] [2023-12-19 17:15:24,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:24,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:25,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020047403] [2023-12-19 17:15:25,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020047403] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:25,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642491094] [2023-12-19 17:15:25,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:15:25,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:25,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:25,232 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 17:15:25,257 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 17:15:25,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:15:25,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:15:25,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 80 conjunts are in the unsatisfiable core [2023-12-19 17:15:25,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:25,362 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 17:15:25,364 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 10 treesize of output 9 [2023-12-19 17:15:25,367 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 17:15:25,371 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 27 treesize of output 1 [2023-12-19 17:15:25,397 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 30 treesize of output 11 [2023-12-19 17:15:25,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:25,405 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 34 treesize of output 15 [2023-12-19 17:15:25,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:25,410 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 30 treesize of output 17 [2023-12-19 17:15:25,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 26 [2023-12-19 17:15:25,426 INFO L349 Elim1Store]: treesize reduction 50, result has 37.5 percent of original size [2023-12-19 17:15:25,426 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 33 treesize of output 45 [2023-12-19 17:15:25,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 73 [2023-12-19 17:15:25,539 INFO L349 Elim1Store]: treesize reduction 49, result has 23.4 percent of original size [2023-12-19 17:15:25,540 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 46 treesize of output 30 [2023-12-19 17:15:25,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:25,549 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 101 treesize of output 42 [2023-12-19 17:15:25,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:25,556 INFO L349 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2023-12-19 17:15:25,557 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 40 treesize of output 30 [2023-12-19 17:15:25,561 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 38 treesize of output 25 [2023-12-19 17:15:25,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:25,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 75 [2023-12-19 17:15:25,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:25,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2023-12-19 17:15:25,773 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-19 17:15:25,773 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 72 treesize of output 39 [2023-12-19 17:15:25,778 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 17:15:25,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:25,796 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 17:15:25,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-19 17:15:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:25,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:25,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:25,973 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 117 treesize of output 103 [2023-12-19 17:15:25,982 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:25,983 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 96 treesize of output 82 [2023-12-19 17:15:25,988 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:25,990 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:25,990 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 71 treesize of output 61 [2023-12-19 17:15:25,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:25,998 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2023-12-19 17:15:26,000 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:26,001 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:26,001 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 54 treesize of output 48 [2023-12-19 17:15:26,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:26,004 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2023-12-19 17:15:26,013 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_599 Int) (v_ArrVal_602 (Array Int Int)) (v_ArrVal_593 (Array Int Int)) (v_DerPreprocessor_6 Int)) (or (< (select (select (store (store |c_#memory_int#2| v_DerPreprocessor_6 v_ArrVal_593) v_ArrVal_599 v_ArrVal_602) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (+ |c_ULTIMATE.start_main_~base~0#1| 100)) (not (= (select (store |c_#valid| v_DerPreprocessor_6 1) v_ArrVal_599) 0)) (not (= (select |c_#valid| v_DerPreprocessor_6) 0)))) is different from false [2023-12-19 17:15:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2023-12-19 17:15:26,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642491094] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:26,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:26,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 18 [2023-12-19 17:15:26,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996084683] [2023-12-19 17:15:26,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:26,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 17:15:26,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:26,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 17:15:26,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=222, Unknown=1, NotChecked=30, Total=306 [2023-12-19 17:15:26,070 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 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 17:15:26,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:26,460 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2023-12-19 17:15:26,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 17:15:26,461 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 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 33 [2023-12-19 17:15:26,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:26,461 INFO L225 Difference]: With dead ends: 48 [2023-12-19 17:15:26,461 INFO L226 Difference]: Without dead ends: 46 [2023-12-19 17:15:26,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=496, Unknown=1, NotChecked=48, Total=702 [2023-12-19 17:15:26,462 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 62 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:26,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 113 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 169 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2023-12-19 17:15:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-19 17:15:26,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2023-12-19 17:15:26,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:26,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2023-12-19 17:15:26,465 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 33 [2023-12-19 17:15:26,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:26,465 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2023-12-19 17:15:26,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 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 17:15:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2023-12-19 17:15:26,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-19 17:15:26,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:26,466 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-19 17:15:26,498 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 17:15:26,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:26,666 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:26,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:26,667 INFO L85 PathProgramCache]: Analyzing trace with hash 217813684, now seen corresponding path program 2 times [2023-12-19 17:15:26,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:26,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760584566] [2023-12-19 17:15:26,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:26,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:27,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:27,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760584566] [2023-12-19 17:15:27,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760584566] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:27,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310557588] [2023-12-19 17:15:27,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:15:27,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:27,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:27,690 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 17:15:27,732 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 17:15:27,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:15:27,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:15:27,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-19 17:15:27,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:27,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-19 17:15:27,841 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 27 treesize of output 1 [2023-12-19 17:15:27,844 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 17:15:27,846 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 10 treesize of output 9 [2023-12-19 17:15:27,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:27,874 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 30 treesize of output 11 [2023-12-19 17:15:27,878 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 34 treesize of output 15 [2023-12-19 17:15:27,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 26 [2023-12-19 17:15:27,893 INFO L349 Elim1Store]: treesize reduction 50, result has 37.5 percent of original size [2023-12-19 17:15:27,893 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 33 treesize of output 45 [2023-12-19 17:15:27,900 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 34 treesize of output 21 [2023-12-19 17:15:27,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:27,973 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 81 treesize of output 49 [2023-12-19 17:15:27,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 54 [2023-12-19 17:15:27,987 INFO L349 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2023-12-19 17:15:27,987 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 38 treesize of output 45 [2023-12-19 17:15:27,991 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 7 treesize of output 5 [2023-12-19 17:15:27,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:27,996 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 46 treesize of output 30 [2023-12-19 17:15:28,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:28,007 INFO L349 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2023-12-19 17:15:28,007 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 40 treesize of output 30 [2023-12-19 17:15:28,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:28,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 75 [2023-12-19 17:15:28,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:28,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2023-12-19 17:15:28,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:28,222 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-19 17:15:28,222 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 72 treesize of output 39 [2023-12-19 17:15:28,227 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 17:15:28,237 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 17:15:28,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-19 17:15:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:28,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:28,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:28,408 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 103 treesize of output 89 [2023-12-19 17:15:28,411 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:28,413 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:28,413 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 76 treesize of output 66 [2023-12-19 17:15:28,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:28,420 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2023-12-19 17:15:28,422 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:28,423 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:28,424 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 58 treesize of output 54 [2023-12-19 17:15:28,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:28,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310557588] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:28,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:28,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 18 [2023-12-19 17:15:28,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203467380] [2023-12-19 17:15:28,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:28,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 17:15:28,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:28,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 17:15:28,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=251, Unknown=1, NotChecked=0, Total=306 [2023-12-19 17:15:28,494 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:28,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:28,890 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2023-12-19 17:15:28,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 17:15:28,891 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-19 17:15:28,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:28,891 INFO L225 Difference]: With dead ends: 50 [2023-12-19 17:15:28,891 INFO L226 Difference]: Without dead ends: 43 [2023-12-19 17:15:28,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=536, Unknown=1, NotChecked=0, Total=702 [2023-12-19 17:15:28,892 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 63 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:28,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 121 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:15:28,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-19 17:15:28,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2023-12-19 17:15:28,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 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 17:15:28,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2023-12-19 17:15:28,897 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 33 [2023-12-19 17:15:28,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:28,897 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2023-12-19 17:15:28,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:28,897 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2023-12-19 17:15:28,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-19 17:15:28,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:28,899 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2023-12-19 17:15:28,907 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 17:15:29,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:29,105 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:29,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:29,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1023764725, now seen corresponding path program 5 times [2023-12-19 17:15:29,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:29,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365005714] [2023-12-19 17:15:29,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:29,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:30,117 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:30,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:30,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365005714] [2023-12-19 17:15:30,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365005714] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:30,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228673226] [2023-12-19 17:15:30,119 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:15:30,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:30,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:30,120 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 17:15:30,144 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 17:15:30,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-19 17:15:30,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:15:30,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 85 conjunts are in the unsatisfiable core [2023-12-19 17:15:30,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:30,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-12-19 17:15:30,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:30,489 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 30 treesize of output 11 [2023-12-19 17:15:30,492 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 30 treesize of output 11 [2023-12-19 17:15:30,496 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 10 treesize of output 9 [2023-12-19 17:15:30,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:30,532 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 46 treesize of output 30 [2023-12-19 17:15:30,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 31 [2023-12-19 17:15:30,547 INFO L349 Elim1Store]: treesize reduction 49, result has 23.4 percent of original size [2023-12-19 17:15:30,547 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 46 treesize of output 30 [2023-12-19 17:15:30,561 INFO L349 Elim1Store]: treesize reduction 50, result has 37.5 percent of original size [2023-12-19 17:15:30,561 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 33 treesize of output 45 [2023-12-19 17:15:30,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:30,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:30,652 INFO L349 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2023-12-19 17:15:30,652 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 60 [2023-12-19 17:15:30,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 63 [2023-12-19 17:15:30,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:30,679 INFO L349 Elim1Store]: treesize reduction 61, result has 23.8 percent of original size [2023-12-19 17:15:30,679 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 65 treesize of output 52 [2023-12-19 17:15:30,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:30,689 INFO L349 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2023-12-19 17:15:30,689 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 40 treesize of output 30 [2023-12-19 17:15:30,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:30,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 88 [2023-12-19 17:15:30,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:30,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2023-12-19 17:15:30,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:31,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 38 [2023-12-19 17:15:31,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:31,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:31,675 INFO L349 Elim1Store]: treesize reduction 88, result has 59.4 percent of original size [2023-12-19 17:15:31,675 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 24926 treesize of output 23700 [2023-12-19 17:15:31,798 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:31,799 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 18704 treesize of output 18492 [2023-12-19 17:15:31,962 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:31,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 759 treesize of output 808 [2023-12-19 17:15:32,384 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:32,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228673226] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:32,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:32,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-12-19 17:15:32,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480863748] [2023-12-19 17:15:32,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:32,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 17:15:32,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:32,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 17:15:32,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-12-19 17:15:32,385 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:32,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:32,815 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2023-12-19 17:15:32,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 17:15:32,815 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-19 17:15:32,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:32,815 INFO L225 Difference]: With dead ends: 71 [2023-12-19 17:15:32,815 INFO L226 Difference]: Without dead ends: 47 [2023-12-19 17:15:32,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2023-12-19 17:15:32,816 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 24 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:32,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 257 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 17:15:32,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-19 17:15:32,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-12-19 17:15:32,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 46 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 17:15:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2023-12-19 17:15:32,819 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 38 [2023-12-19 17:15:32,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:32,819 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2023-12-19 17:15:32,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:32,820 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2023-12-19 17:15:32,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 17:15:32,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:32,820 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2023-12-19 17:15:32,827 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 17:15:33,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:33,027 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:33,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:33,027 INFO L85 PathProgramCache]: Analyzing trace with hash -33911742, now seen corresponding path program 6 times [2023-12-19 17:15:33,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:33,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448430304] [2023-12-19 17:15:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:33,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 19 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:35,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:35,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448430304] [2023-12-19 17:15:35,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448430304] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:35,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49888310] [2023-12-19 17:15:35,000 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 17:15:35,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:35,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:35,001 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 17:15:35,002 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 17:15:35,294 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-19 17:15:35,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:15:35,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 107 conjunts are in the unsatisfiable core [2023-12-19 17:15:35,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:35,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 17:15:35,311 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 17:15:35,313 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 10 treesize of output 9 [2023-12-19 17:15:35,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2023-12-19 17:15:35,360 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 30 treesize of output 11 [2023-12-19 17:15:35,364 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 34 treesize of output 15 [2023-12-19 17:15:35,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:35,368 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 30 treesize of output 17 [2023-12-19 17:15:35,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 26 [2023-12-19 17:15:35,384 INFO L349 Elim1Store]: treesize reduction 50, result has 37.5 percent of original size [2023-12-19 17:15:35,384 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 33 treesize of output 45 [2023-12-19 17:15:35,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:35,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:35,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 73 [2023-12-19 17:15:35,475 INFO L349 Elim1Store]: treesize reduction 49, result has 23.4 percent of original size [2023-12-19 17:15:35,475 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 46 treesize of output 30 [2023-12-19 17:15:35,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:35,483 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 101 treesize of output 42 [2023-12-19 17:15:35,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:35,501 INFO L349 Elim1Store]: treesize reduction 62, result has 38.0 percent of original size [2023-12-19 17:15:35,501 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 50 treesize of output 69 [2023-12-19 17:15:35,510 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 38 treesize of output 25 [2023-12-19 17:15:35,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:35,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 121 [2023-12-19 17:15:35,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:35,643 INFO L349 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2023-12-19 17:15:35,643 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 181 treesize of output 68 [2023-12-19 17:15:35,655 INFO L349 Elim1Store]: treesize reduction 53, result has 45.9 percent of original size [2023-12-19 17:15:35,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 53 [2023-12-19 17:15:35,659 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 7 treesize of output 5 [2023-12-19 17:15:35,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:35,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:35,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:35,672 INFO L349 Elim1Store]: treesize reduction 4, result has 85.7 percent of original size [2023-12-19 17:15:35,672 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 61 treesize of output 37 [2023-12-19 17:15:35,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:35,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:35,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:35,679 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 65 treesize of output 52 [2023-12-19 17:15:35,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 126 [2023-12-19 17:15:35,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:35,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2023-12-19 17:15:35,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:36,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 38 [2023-12-19 17:15:36,116 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-12-19 17:15:36,116 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 127 treesize of output 61 [2023-12-19 17:15:36,121 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 17:15:36,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:36,154 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 17:15:36,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-19 17:15:36,158 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 17:15:36,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:36,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:36,573 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 385 treesize of output 300 [2023-12-19 17:15:36,578 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:36,587 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:36,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 325 treesize of output 185 [2023-12-19 17:15:36,597 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-12-19 17:15:36,597 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 623 treesize of output 559 [2023-12-19 17:15:36,604 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 406 treesize of output 384 [2023-12-19 17:15:36,612 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:36,613 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:36,614 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:36,615 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:36,616 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 152 treesize of output 144 [2023-12-19 17:15:36,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:36,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:36,626 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 72 [2023-12-19 17:15:36,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:36,632 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 64 [2023-12-19 17:15:36,643 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:36,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 6 [2023-12-19 17:15:36,649 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 31 treesize of output 27 [2023-12-19 17:15:37,940 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 17:15:37,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49888310] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:37,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:37,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 11] total 26 [2023-12-19 17:15:37,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504054109] [2023-12-19 17:15:37,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:37,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 17:15:37,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:37,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 17:15:37,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=552, Unknown=1, NotChecked=0, Total=650 [2023-12-19 17:15:37,943 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:38,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:38,760 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2023-12-19 17:15:38,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 17:15:38,761 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-19 17:15:38,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:38,761 INFO L225 Difference]: With dead ends: 58 [2023-12-19 17:15:38,761 INFO L226 Difference]: Without dead ends: 56 [2023-12-19 17:15:38,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=298, Invalid=1033, Unknown=1, NotChecked=0, Total=1332 [2023-12-19 17:15:38,762 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 100 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:38,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 169 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 17:15:38,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-19 17:15:38,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2023-12-19 17:15:38,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2023-12-19 17:15:38,766 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 43 [2023-12-19 17:15:38,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:38,766 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2023-12-19 17:15:38,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2023-12-19 17:15:38,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 17:15:38,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:38,767 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2023-12-19 17:15:38,776 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 17:15:38,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 17:15:38,974 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:38,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:38,974 INFO L85 PathProgramCache]: Analyzing trace with hash -33909820, now seen corresponding path program 3 times [2023-12-19 17:15:38,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:38,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792378118] [2023-12-19 17:15:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:38,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:40,221 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 17 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:40,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:40,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792378118] [2023-12-19 17:15:40,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792378118] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:40,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385623349] [2023-12-19 17:15:40,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:15:40,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:40,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:40,231 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 17:15:40,244 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 17:15:40,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-19 17:15:40,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:15:40,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 109 conjunts are in the unsatisfiable core [2023-12-19 17:15:40,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:40,621 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 27 treesize of output 1 [2023-12-19 17:15:40,622 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 17:15:40,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-19 17:15:40,628 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 10 treesize of output 9 [2023-12-19 17:15:40,680 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 30 treesize of output 11 [2023-12-19 17:15:40,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:40,687 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 34 treesize of output 15 [2023-12-19 17:15:40,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 26 [2023-12-19 17:15:40,701 INFO L349 Elim1Store]: treesize reduction 50, result has 37.5 percent of original size [2023-12-19 17:15:40,701 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 33 treesize of output 45 [2023-12-19 17:15:40,721 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 34 treesize of output 21 [2023-12-19 17:15:40,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:40,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 73 [2023-12-19 17:15:40,837 INFO L349 Elim1Store]: treesize reduction 49, result has 23.4 percent of original size [2023-12-19 17:15:40,837 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 46 treesize of output 30 [2023-12-19 17:15:40,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:40,861 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 101 treesize of output 42 [2023-12-19 17:15:40,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:40,874 INFO L349 Elim1Store]: treesize reduction 62, result has 38.0 percent of original size [2023-12-19 17:15:40,874 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 50 treesize of output 69 [2023-12-19 17:15:40,883 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 38 treesize of output 25 [2023-12-19 17:15:41,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 121 [2023-12-19 17:15:41,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:41,016 INFO L349 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2023-12-19 17:15:41,016 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 181 treesize of output 68 [2023-12-19 17:15:41,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:41,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:41,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:41,025 INFO L349 Elim1Store]: treesize reduction 4, result has 85.7 percent of original size [2023-12-19 17:15:41,025 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 61 treesize of output 37 [2023-12-19 17:15:41,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:41,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:41,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:41,033 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 65 treesize of output 52 [2023-12-19 17:15:41,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 29 [2023-12-19 17:15:41,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:41,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:41,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 126 [2023-12-19 17:15:41,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2023-12-19 17:15:41,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:41,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 38 [2023-12-19 17:15:41,474 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-12-19 17:15:41,474 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 127 treesize of output 61 [2023-12-19 17:15:41,495 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 17:15:41,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:41,507 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 17:15:41,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-19 17:15:41,511 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 17 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:41,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:41,951 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:41,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:15:41,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 421 treesize of output 281 [2023-12-19 17:15:41,969 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-12-19 17:15:41,970 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 1301 treesize of output 1045 [2023-12-19 17:15:41,974 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:41,974 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:41,975 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:15:41,976 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 118 treesize of output 114 [2023-12-19 17:15:41,980 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 135 treesize of output 119 [2023-12-19 17:15:41,988 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 64 treesize of output 60 [2023-12-19 17:15:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 17 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:43,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385623349] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:15:43,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:15:43,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 25 [2023-12-19 17:15:43,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691959637] [2023-12-19 17:15:43,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:15:43,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 17:15:43,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:15:43,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 17:15:43,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=519, Unknown=2, NotChecked=0, Total=600 [2023-12-19 17:15:43,194 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 25 states, 25 states have (on average 4.4) internal successors, (110), 25 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 17:15:44,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:15:44,080 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2023-12-19 17:15:44,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 17:15:44,080 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.4) internal successors, (110), 25 states have internal predecessors, (110), 0 states have call successors, (0), 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 43 [2023-12-19 17:15:44,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:15:44,081 INFO L225 Difference]: With dead ends: 60 [2023-12-19 17:15:44,081 INFO L226 Difference]: Without dead ends: 53 [2023-12-19 17:15:44,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=283, Invalid=1121, Unknown=2, NotChecked=0, Total=1406 [2023-12-19 17:15:44,082 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 66 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 17:15:44,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 189 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 17:15:44,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-19 17:15:44,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2023-12-19 17:15:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 51 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:15:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2023-12-19 17:15:44,085 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 43 [2023-12-19 17:15:44,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:15:44,086 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2023-12-19 17:15:44,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.4) internal successors, (110), 25 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 17:15:44,086 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2023-12-19 17:15:44,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-19 17:15:44,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:15:44,086 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2023-12-19 17:15:44,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 17:15:44,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 17:15:44,293 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:15:44,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:15:44,293 INFO L85 PathProgramCache]: Analyzing trace with hash -477326875, now seen corresponding path program 7 times [2023-12-19 17:15:44,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:15:44,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515787842] [2023-12-19 17:15:44,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:15:44,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:15:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:45,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:15:45,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515787842] [2023-12-19 17:15:45,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515787842] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:15:45,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530329203] [2023-12-19 17:15:45,635 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 17:15:45,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:15:45,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:15:45,636 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 17:15:45,681 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 17:15:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:15:45,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 106 conjunts are in the unsatisfiable core [2023-12-19 17:15:45,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:15:45,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2023-12-19 17:15:45,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-12-19 17:15:45,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:45,861 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 30 treesize of output 11 [2023-12-19 17:15:45,864 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 30 treesize of output 11 [2023-12-19 17:15:45,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:45,896 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 46 treesize of output 30 [2023-12-19 17:15:45,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:45,901 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 42 treesize of output 26 [2023-12-19 17:15:45,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 31 [2023-12-19 17:15:45,920 INFO L349 Elim1Store]: treesize reduction 50, result has 37.5 percent of original size [2023-12-19 17:15:45,920 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 33 treesize of output 45 [2023-12-19 17:15:45,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:46,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:46,017 INFO L349 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2023-12-19 17:15:46,017 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 60 [2023-12-19 17:15:46,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 63 [2023-12-19 17:15:46,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:46,032 INFO L349 Elim1Store]: treesize reduction 61, result has 23.8 percent of original size [2023-12-19 17:15:46,032 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 65 treesize of output 52 [2023-12-19 17:15:46,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:46,051 INFO L349 Elim1Store]: treesize reduction 62, result has 38.0 percent of original size [2023-12-19 17:15:46,052 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 50 treesize of output 69 [2023-12-19 17:15:46,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:46,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:46,214 INFO L349 Elim1Store]: treesize reduction 88, result has 14.6 percent of original size [2023-12-19 17:15:46,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 162 treesize of output 86 [2023-12-19 17:15:46,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:46,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:46,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:46,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:46,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 66 [2023-12-19 17:15:46,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 115 [2023-12-19 17:15:46,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:46,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:46,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:15:46,250 INFO L349 Elim1Store]: treesize reduction 4, result has 85.7 percent of original size [2023-12-19 17:15:46,250 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 61 treesize of output 37 [2023-12-19 17:15:46,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:46,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:46,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 143 [2023-12-19 17:15:46,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2023-12-19 17:15:46,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:46,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 38 [2023-12-19 17:15:46,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:46,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 42 [2023-12-19 17:15:46,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:15:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:15:46,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:15:53,748 INFO L349 Elim1Store]: treesize reduction 6251, result has 25.5 percent of original size [2023-12-19 17:15:53,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 14 new quantified variables, introduced 78 case distinctions, treesize of input 19675092 treesize of output 19278842 [2023-12-19 17:16:03,429 WARN L293 SmtUtils]: Spent 9.67s on a formula simplification. DAG size of input: 2027 DAG size of output: 726 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 17:16:05,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:05,717 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 74332888 treesize of output 73631456 [2023-12-19 17:16:26,627 WARN L293 SmtUtils]: Spent 20.90s on a formula simplification. DAG size of input: 5022 DAG size of output: 1229 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 17:16:29,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:29,662 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 59089 treesize of output 59214 [2023-12-19 17:16:31,295 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 804 treesize of output 802 [2023-12-19 17:16:40,052 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 13 treesize of output 9 [2023-12-19 17:16:40,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:40,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 81 [2023-12-19 17:16:40,607 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 17:16:40,638 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 40 treesize of output 36 [2023-12-19 17:16:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:16:40,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530329203] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:16:40,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:16:40,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2023-12-19 17:16:40,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755832897] [2023-12-19 17:16:40,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:16:40,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 17:16:40,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:16:40,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 17:16:40,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=521, Unknown=1, NotChecked=0, Total=600 [2023-12-19 17:16:40,651 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 24 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:16:42,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:16:42,588 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2023-12-19 17:16:42,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 17:16:42,589 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 24 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-12-19 17:16:42,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:16:42,589 INFO L225 Difference]: With dead ends: 86 [2023-12-19 17:16:42,589 INFO L226 Difference]: Without dead ends: 57 [2023-12-19 17:16:42,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=88, Invalid=613, Unknown=1, NotChecked=0, Total=702 [2023-12-19 17:16:42,590 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 26 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 17:16:42,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 471 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 17:16:42,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-19 17:16:42,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-12-19 17:16:42,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 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 17:16:42,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2023-12-19 17:16:42,594 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 48 [2023-12-19 17:16:42,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:16:42,594 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2023-12-19 17:16:42,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 24 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:16:42,594 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2023-12-19 17:16:42,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 17:16:42,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:16:42,595 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2023-12-19 17:16:42,603 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 17:16:42,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-19 17:16:42,801 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:16:42,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:16:42,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1015301902, now seen corresponding path program 8 times [2023-12-19 17:16:42,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:16:42,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278198581] [2023-12-19 17:16:42,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:16:42,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:16:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:16:44,752 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:16:44,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:16:44,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278198581] [2023-12-19 17:16:44,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278198581] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:16:44,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843308348] [2023-12-19 17:16:44,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:16:44,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:16:44,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:16:44,754 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 17:16:44,756 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 17:16:44,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:16:44,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:16:44,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 140 conjunts are in the unsatisfiable core [2023-12-19 17:16:44,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:16:45,008 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 17:16:45,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2023-12-19 17:16:45,015 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 10 treesize of output 9 [2023-12-19 17:16:45,019 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 17:16:45,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:16:45,059 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 30 treesize of output 11 [2023-12-19 17:16:45,064 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 34 treesize of output 15 [2023-12-19 17:16:45,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 26 [2023-12-19 17:16:45,078 INFO L349 Elim1Store]: treesize reduction 50, result has 37.5 percent of original size [2023-12-19 17:16:45,078 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 33 treesize of output 45 [2023-12-19 17:16:45,085 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 34 treesize of output 21 [2023-12-19 17:16:45,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:16:45,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 73 [2023-12-19 17:16:45,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,178 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 101 treesize of output 42 [2023-12-19 17:16:45,189 INFO L349 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2023-12-19 17:16:45,189 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 38 treesize of output 45 [2023-12-19 17:16:45,193 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 7 treesize of output 5 [2023-12-19 17:16:45,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,210 INFO L349 Elim1Store]: treesize reduction 62, result has 38.0 percent of original size [2023-12-19 17:16:45,211 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 50 treesize of output 69 [2023-12-19 17:16:45,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,222 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 46 treesize of output 30 [2023-12-19 17:16:45,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:16:45,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,354 INFO L349 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2023-12-19 17:16:45,354 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 145 treesize of output 75 [2023-12-19 17:16:45,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 102 [2023-12-19 17:16:45,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,378 INFO L349 Elim1Store]: treesize reduction 74, result has 38.3 percent of original size [2023-12-19 17:16:45,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 97 [2023-12-19 17:16:45,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 29 [2023-12-19 17:16:45,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,397 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 65 treesize of output 52 [2023-12-19 17:16:45,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:16:45,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 189 [2023-12-19 17:16:45,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,590 INFO L349 Elim1Store]: treesize reduction 104, result has 12.6 percent of original size [2023-12-19 17:16:45,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 281 treesize of output 94 [2023-12-19 17:16:45,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 78 [2023-12-19 17:16:45,622 INFO L349 Elim1Store]: treesize reduction 61, result has 46.5 percent of original size [2023-12-19 17:16:45,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 61 [2023-12-19 17:16:45,630 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 7 treesize of output 5 [2023-12-19 17:16:45,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:16:45,646 INFO L349 Elim1Store]: treesize reduction 4, result has 87.5 percent of original size [2023-12-19 17:16:45,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 44 [2023-12-19 17:16:45,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:16:45,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 253 treesize of output 193 [2023-12-19 17:16:46,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2023-12-19 17:16:46,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:16:46,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 38 [2023-12-19 17:16:46,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:16:46,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 42 [2023-12-19 17:16:46,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:16:46,430 INFO L349 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2023-12-19 17:16:46,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 198 treesize of output 87 [2023-12-19 17:16:46,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-19 17:16:46,451 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 17:16:46,453 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 17 treesize of output 9 [2023-12-19 17:16:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:16:46,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:16:58,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:16:58,583 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 1216 treesize of output 689 [2023-12-19 17:16:58,587 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:58,588 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:58,588 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:58,589 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:58,589 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:58,592 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:58,596 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:58,596 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:58,597 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:58,597 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:58,598 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:58,598 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:58,642 INFO L349 Elim1Store]: treesize reduction 333, result has 2.6 percent of original size [2023-12-19 17:16:58,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 506368 treesize of output 480120 [2023-12-19 17:16:59,078 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:59,080 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:59,080 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:59,213 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:59,213 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:59,214 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:59,214 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:59,214 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:59,215 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:16:59,789 INFO L349 Elim1Store]: treesize reduction 328, result has 13.5 percent of original size [2023-12-19 17:16:59,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 30 case distinctions, treesize of input 49122044 treesize of output 44544708 [2023-12-19 17:17:04,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:04,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:04,312 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:17:04,314 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 7978 treesize of output 7942 [2023-12-19 17:17:04,446 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:17:04,446 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 3670 treesize of output 3574 [2023-12-19 17:17:04,682 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 17:17:04,689 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 415 treesize of output 411 [2023-12-19 17:17:10,368 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse4 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse1 (+ |c_ULTIMATE.start_main_~base~0#1| 100))) (and (forall ((v_ArrVal_1908 Int) (v_ArrVal_1893 (Array Int Int)) (v_ArrVal_1930 Int) (v_DerPreprocessor_31 Int) (v_ArrVal_1905 (Array Int Int)) (|v_ULTIMATE.start_append_to_list_~node~0#1.base_135| Int) (v_ArrVal_1925 (Array Int Int)) (v_ArrVal_1913 (Array Int Int))) (let ((.cse5 (store |c_#valid| v_DerPreprocessor_31 1))) (let ((.cse2 (store .cse5 v_ArrVal_1908 1)) (.cse0 (store (store (store (store |c_#memory_int#2| v_DerPreprocessor_31 v_ArrVal_1893) v_ArrVal_1908 v_ArrVal_1905) |v_ULTIMATE.start_append_to_list_~node~0#1.base_135| v_ArrVal_1913) v_ArrVal_1930 v_ArrVal_1925))) (or (< (select (select .cse0 |v_ULTIMATE.start_append_to_list_~node~0#1.base_135|) 0) .cse1) (not (= (select |c_#valid| v_DerPreprocessor_31) 0)) (not (= (select .cse2 |v_ULTIMATE.start_append_to_list_~node~0#1.base_135|) 0)) (< (select (select .cse0 .cse3) .cse4) .cse1) (not (= (select .cse5 v_ArrVal_1908) 0)) (not (= (select (store .cse2 |v_ULTIMATE.start_append_to_list_~node~0#1.base_135| 1) v_ArrVal_1930) 0)) (< (select (select .cse0 v_DerPreprocessor_31) 0) .cse1))))) (forall ((v_ArrVal_1908 Int) (v_ArrVal_1893 (Array Int Int)) (v_ArrVal_1930 Int) (v_DerPreprocessor_31 Int) (v_ArrVal_1905 (Array Int Int)) (|v_ULTIMATE.start_append_to_list_~node~0#1.base_135| Int) (v_ArrVal_1925 (Array Int Int)) (v_ArrVal_1913 (Array Int Int))) (let ((.cse8 (store |c_#valid| v_DerPreprocessor_31 1))) (let ((.cse6 (store .cse8 v_ArrVal_1908 1)) (.cse7 (store (store (store (store |c_#memory_int#2| v_DerPreprocessor_31 v_ArrVal_1893) v_ArrVal_1908 v_ArrVal_1905) |v_ULTIMATE.start_append_to_list_~node~0#1.base_135| v_ArrVal_1913) v_ArrVal_1930 v_ArrVal_1925))) (or (not (= (select |c_#valid| v_DerPreprocessor_31) 0)) (not (= (select .cse6 |v_ULTIMATE.start_append_to_list_~node~0#1.base_135|) 0)) (< (select (select .cse7 .cse3) .cse4) .cse1) (not (= (select .cse8 v_ArrVal_1908) 0)) (not (= (select (store .cse6 |v_ULTIMATE.start_append_to_list_~node~0#1.base_135| 1) v_ArrVal_1930) 0)) (< (select (select .cse7 v_DerPreprocessor_31) 0) .cse1))))) (forall ((v_ArrVal_1908 Int) (v_ArrVal_1893 (Array Int Int)) (v_ArrVal_1930 Int) (v_DerPreprocessor_31 Int) (v_ArrVal_1905 (Array Int Int)) (|v_ULTIMATE.start_append_to_list_~node~0#1.base_135| Int) (v_ArrVal_1925 (Array Int Int)) (v_ArrVal_1913 (Array Int Int))) (let ((.cse10 (store |c_#valid| v_DerPreprocessor_31 1))) (let ((.cse9 (store .cse10 v_ArrVal_1908 1))) (or (not (= (select |c_#valid| v_DerPreprocessor_31) 0)) (not (= (select .cse9 |v_ULTIMATE.start_append_to_list_~node~0#1.base_135|) 0)) (< (select (select (store (store (store (store |c_#memory_int#2| v_DerPreprocessor_31 v_ArrVal_1893) v_ArrVal_1908 v_ArrVal_1905) |v_ULTIMATE.start_append_to_list_~node~0#1.base_135| v_ArrVal_1913) v_ArrVal_1930 v_ArrVal_1925) .cse3) .cse4) .cse1) (not (= (select .cse10 v_ArrVal_1908) 0)) (not (= (select (store .cse9 |v_ULTIMATE.start_append_to_list_~node~0#1.base_135| 1) v_ArrVal_1930) 0)))))) (forall ((v_ArrVal_1908 Int) (v_ArrVal_1893 (Array Int Int)) (v_ArrVal_1930 Int) (v_DerPreprocessor_31 Int) (v_ArrVal_1905 (Array Int Int)) (|v_ULTIMATE.start_append_to_list_~node~0#1.base_135| Int) (v_ArrVal_1925 (Array Int Int)) (v_ArrVal_1913 (Array Int Int))) (let ((.cse13 (store |c_#valid| v_DerPreprocessor_31 1))) (let ((.cse12 (store .cse13 v_ArrVal_1908 1)) (.cse11 (store (store (store (store |c_#memory_int#2| v_DerPreprocessor_31 v_ArrVal_1893) v_ArrVal_1908 v_ArrVal_1905) |v_ULTIMATE.start_append_to_list_~node~0#1.base_135| v_ArrVal_1913) v_ArrVal_1930 v_ArrVal_1925))) (or (< (select (select .cse11 |v_ULTIMATE.start_append_to_list_~node~0#1.base_135|) 0) .cse1) (not (= (select |c_#valid| v_DerPreprocessor_31) 0)) (not (= (select .cse12 |v_ULTIMATE.start_append_to_list_~node~0#1.base_135|) 0)) (< (select (select .cse11 v_ArrVal_1908) 0) .cse1) (< (select (select .cse11 .cse3) .cse4) .cse1) (not (= (select .cse13 v_ArrVal_1908) 0)) (not (= (select (store .cse12 |v_ULTIMATE.start_append_to_list_~node~0#1.base_135| 1) v_ArrVal_1930) 0)) (< (select (select .cse11 v_DerPreprocessor_31) 0) .cse1))))) (forall ((v_ArrVal_1908 Int) (v_ArrVal_1893 (Array Int Int)) (v_ArrVal_1930 Int) (v_DerPreprocessor_31 Int) (v_ArrVal_1905 (Array Int Int)) (|v_ULTIMATE.start_append_to_list_~node~0#1.base_135| Int) (v_ArrVal_1925 (Array Int Int)) (v_ArrVal_1913 (Array Int Int))) (let ((.cse16 (store |c_#valid| v_DerPreprocessor_31 1))) (let ((.cse14 (store .cse16 v_ArrVal_1908 1)) (.cse15 (store (store (store (store |c_#memory_int#2| v_DerPreprocessor_31 v_ArrVal_1893) v_ArrVal_1908 v_ArrVal_1905) |v_ULTIMATE.start_append_to_list_~node~0#1.base_135| v_ArrVal_1913) v_ArrVal_1930 v_ArrVal_1925))) (or (not (= (select |c_#valid| v_DerPreprocessor_31) 0)) (not (= (select .cse14 |v_ULTIMATE.start_append_to_list_~node~0#1.base_135|) 0)) (< (select (select .cse15 v_ArrVal_1908) 0) .cse1) (< (select (select .cse15 .cse3) .cse4) .cse1) (not (= (select .cse16 v_ArrVal_1908) 0)) (not (= (select (store .cse14 |v_ULTIMATE.start_append_to_list_~node~0#1.base_135| 1) v_ArrVal_1930) 0)) (< (select (select .cse15 v_DerPreprocessor_31) 0) .cse1))))))) is different from false [2023-12-19 17:17:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2023-12-19 17:17:10,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843308348] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:17:10,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:17:10,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 31 [2023-12-19 17:17:10,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131460149] [2023-12-19 17:17:10,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:17:10,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 17:17:10,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:17:10,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 17:17:10,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=773, Unknown=2, NotChecked=56, Total=930 [2023-12-19 17:17:10,758 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 31 states, 31 states have (on average 4.548387096774194) internal successors, (141), 31 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:17:13,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:17:13,094 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2023-12-19 17:17:13,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 17:17:13,094 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.548387096774194) internal successors, (141), 31 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-19 17:17:13,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:17:13,095 INFO L225 Difference]: With dead ends: 68 [2023-12-19 17:17:13,095 INFO L226 Difference]: Without dead ends: 66 [2023-12-19 17:17:13,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 103 SyntacticMatches, 8 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=402, Invalid=1762, Unknown=2, NotChecked=90, Total=2256 [2023-12-19 17:17:13,096 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 122 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 17:17:13,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 298 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 570 Invalid, 0 Unknown, 53 Unchecked, 0.9s Time] [2023-12-19 17:17:13,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-19 17:17:13,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2023-12-19 17:17:13,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 61 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 17:17:13,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2023-12-19 17:17:13,101 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 53 [2023-12-19 17:17:13,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:17:13,101 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2023-12-19 17:17:13,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.548387096774194) internal successors, (141), 31 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:17:13,101 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2023-12-19 17:17:13,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 17:17:13,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:17:13,101 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-12-19 17:17:13,124 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 17:17:13,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 17:17:13,302 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:17:13,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:17:13,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1015299980, now seen corresponding path program 4 times [2023-12-19 17:17:13,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:17:13,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447302256] [2023-12-19 17:17:13,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:17:13,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:17:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:17:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 27 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:17:15,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:17:15,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447302256] [2023-12-19 17:17:15,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447302256] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:17:15,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194332318] [2023-12-19 17:17:15,298 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:17:15,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:17:15,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:17:15,300 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 17:17:15,307 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 17:17:15,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:17:15,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:17:15,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 131 conjunts are in the unsatisfiable core [2023-12-19 17:17:15,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:17:15,570 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 10 treesize of output 9 [2023-12-19 17:17:15,575 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 17:17:15,577 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 27 treesize of output 1 [2023-12-19 17:17:15,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-19 17:17:15,606 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 30 treesize of output 11 [2023-12-19 17:17:15,612 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 34 treesize of output 15 [2023-12-19 17:17:15,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:15,616 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 30 treesize of output 17 [2023-12-19 17:17:15,631 INFO L349 Elim1Store]: treesize reduction 38, result has 36.7 percent of original size [2023-12-19 17:17:15,631 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 29 treesize of output 37 [2023-12-19 17:17:15,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 34 [2023-12-19 17:17:15,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:15,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 73 [2023-12-19 17:17:15,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:15,732 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 101 treesize of output 42 [2023-12-19 17:17:15,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:15,746 INFO L349 Elim1Store]: treesize reduction 62, result has 38.0 percent of original size [2023-12-19 17:17:15,746 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 50 treesize of output 69 [2023-12-19 17:17:15,755 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 38 treesize of output 25 [2023-12-19 17:17:15,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:15,762 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 46 treesize of output 30 [2023-12-19 17:17:15,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:15,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:15,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 121 [2023-12-19 17:17:15,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:15,915 INFO L349 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2023-12-19 17:17:15,915 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 181 treesize of output 68 [2023-12-19 17:17:15,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:15,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:15,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:15,921 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 65 treesize of output 52 [2023-12-19 17:17:15,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:15,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:15,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:15,944 INFO L349 Elim1Store]: treesize reduction 74, result has 38.3 percent of original size [2023-12-19 17:17:15,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 97 [2023-12-19 17:17:15,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 29 [2023-12-19 17:17:16,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:16,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:16,143 INFO L349 Elim1Store]: treesize reduction 88, result has 14.6 percent of original size [2023-12-19 17:17:16,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 229 treesize of output 101 [2023-12-19 17:17:16,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 245 treesize of output 170 [2023-12-19 17:17:16,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:16,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:16,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:16,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:16,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:16,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:16,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 78 [2023-12-19 17:17:16,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:16,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:16,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:16,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:16,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:16,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:16,176 INFO L349 Elim1Store]: treesize reduction 4, result has 87.5 percent of original size [2023-12-19 17:17:16,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 44 [2023-12-19 17:17:16,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 33 [2023-12-19 17:17:16,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 253 treesize of output 193 [2023-12-19 17:17:16,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:16,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2023-12-19 17:17:16,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:16,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 38 [2023-12-19 17:17:16,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:16,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 42 [2023-12-19 17:17:16,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:16,933 INFO L349 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2023-12-19 17:17:16,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 198 treesize of output 87 [2023-12-19 17:17:16,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-19 17:17:16,971 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 17:17:16,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-19 17:17:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:17:16,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:17:30,881 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,882 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,882 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,883 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,883 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,884 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,884 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:30,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:30,890 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,890 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 186 treesize of output 180 [2023-12-19 17:17:30,894 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,895 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,895 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,895 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,896 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,896 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,916 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,917 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,917 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,918 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,918 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,918 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:17:30,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1016470 treesize of output 1009166 [2023-12-19 17:17:32,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:32,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:32,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:32,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:32,526 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 5458 treesize of output 5422 [2023-12-19 17:17:32,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:43,887 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse2 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (and (forall ((v_ArrVal_2193 (Array Int Int)) (v_DerPreprocessor_36 Int) (v_ArrVal_2207 (Array Int Int)) (v_ArrVal_2198 Int) (v_DerPreprocessor_38 Int) (|v_ULTIMATE.start_append_to_list_~node~0#1.base_156| Int) (v_ArrVal_2220 (Array Int Int)) (v_ArrVal_2185 (Array Int Int))) (let ((.cse4 (store |c_#valid| v_DerPreprocessor_36 1))) (let ((.cse3 (store .cse4 v_ArrVal_2198 1)) (.cse0 (store (store (store (store |c_#memory_int#2| v_DerPreprocessor_36 v_ArrVal_2185) v_ArrVal_2198 v_ArrVal_2193) v_DerPreprocessor_38 v_ArrVal_2207) |v_ULTIMATE.start_append_to_list_~node~0#1.base_156| v_ArrVal_2220))) (or (not (= (select |c_#valid| v_DerPreprocessor_36) 0)) (< |c_ULTIMATE.start_main_~base~0#1| (+ 1 (select (select .cse0 .cse1) .cse2))) (not (= (select .cse3 v_DerPreprocessor_38) 0)) (not (= (select (store .cse3 v_DerPreprocessor_38 1) |v_ULTIMATE.start_append_to_list_~node~0#1.base_156|) 0)) (< |c_ULTIMATE.start_main_~base~0#1| (+ (select (select .cse0 v_ArrVal_2198) .cse2) 1)) (not (= (select .cse4 v_ArrVal_2198) 0)))))) (forall ((v_ArrVal_2193 (Array Int Int)) (v_DerPreprocessor_36 Int) (v_ArrVal_2207 (Array Int Int)) (v_ArrVal_2198 Int) (v_DerPreprocessor_38 Int) (|v_ULTIMATE.start_append_to_list_~node~0#1.base_156| Int) (v_ArrVal_2220 (Array Int Int)) (v_ArrVal_2185 (Array Int Int))) (let ((.cse7 (store |c_#valid| v_DerPreprocessor_36 1))) (let ((.cse6 (store .cse7 v_ArrVal_2198 1)) (.cse5 (store (store (store (store |c_#memory_int#2| v_DerPreprocessor_36 v_ArrVal_2185) v_ArrVal_2198 v_ArrVal_2193) v_DerPreprocessor_38 v_ArrVal_2207) |v_ULTIMATE.start_append_to_list_~node~0#1.base_156| v_ArrVal_2220))) (or (not (= (select |c_#valid| v_DerPreprocessor_36) 0)) (< |c_ULTIMATE.start_main_~base~0#1| (+ (select (select .cse5 v_DerPreprocessor_36) .cse2) 1)) (< |c_ULTIMATE.start_main_~base~0#1| (+ 1 (select (select .cse5 .cse1) .cse2))) (not (= (select .cse6 v_DerPreprocessor_38) 0)) (not (= (select (store .cse6 v_DerPreprocessor_38 1) |v_ULTIMATE.start_append_to_list_~node~0#1.base_156|) 0)) (< |c_ULTIMATE.start_main_~base~0#1| (+ (select (select .cse5 v_DerPreprocessor_38) .cse2) 1)) (< |c_ULTIMATE.start_main_~base~0#1| (+ (select (select .cse5 v_ArrVal_2198) .cse2) 1)) (not (= (select .cse7 v_ArrVal_2198) 0)))))) (forall ((v_ArrVal_2193 (Array Int Int)) (v_DerPreprocessor_36 Int) (v_ArrVal_2207 (Array Int Int)) (v_ArrVal_2198 Int) (v_DerPreprocessor_38 Int) (|v_ULTIMATE.start_append_to_list_~node~0#1.base_156| Int) (v_ArrVal_2220 (Array Int Int)) (v_ArrVal_2185 (Array Int Int))) (let ((.cse10 (store |c_#valid| v_DerPreprocessor_36 1))) (let ((.cse9 (store .cse10 v_ArrVal_2198 1)) (.cse8 (store (store (store (store |c_#memory_int#2| v_DerPreprocessor_36 v_ArrVal_2185) v_ArrVal_2198 v_ArrVal_2193) v_DerPreprocessor_38 v_ArrVal_2207) |v_ULTIMATE.start_append_to_list_~node~0#1.base_156| v_ArrVal_2220))) (or (not (= (select |c_#valid| v_DerPreprocessor_36) 0)) (< |c_ULTIMATE.start_main_~base~0#1| (+ (select (select .cse8 v_DerPreprocessor_36) .cse2) 1)) (< |c_ULTIMATE.start_main_~base~0#1| (+ 1 (select (select .cse8 .cse1) .cse2))) (not (= (select .cse9 v_DerPreprocessor_38) 0)) (not (= (select (store .cse9 v_DerPreprocessor_38 1) |v_ULTIMATE.start_append_to_list_~node~0#1.base_156|) 0)) (< |c_ULTIMATE.start_main_~base~0#1| (+ (select (select .cse8 v_ArrVal_2198) .cse2) 1)) (not (= (select .cse10 v_ArrVal_2198) 0)))))) (forall ((v_ArrVal_2193 (Array Int Int)) (v_DerPreprocessor_36 Int) (v_ArrVal_2207 (Array Int Int)) (v_ArrVal_2198 Int) (v_DerPreprocessor_38 Int) (|v_ULTIMATE.start_append_to_list_~node~0#1.base_156| Int) (v_ArrVal_2220 (Array Int Int)) (v_ArrVal_2185 (Array Int Int))) (let ((.cse13 (store |c_#valid| v_DerPreprocessor_36 1))) (let ((.cse12 (store .cse13 v_ArrVal_2198 1)) (.cse11 (store (store (store (store |c_#memory_int#2| v_DerPreprocessor_36 v_ArrVal_2185) v_ArrVal_2198 v_ArrVal_2193) v_DerPreprocessor_38 v_ArrVal_2207) |v_ULTIMATE.start_append_to_list_~node~0#1.base_156| v_ArrVal_2220))) (or (not (= (select |c_#valid| v_DerPreprocessor_36) 0)) (< |c_ULTIMATE.start_main_~base~0#1| (+ 1 (select (select .cse11 .cse1) .cse2))) (not (= (select .cse12 v_DerPreprocessor_38) 0)) (not (= (select (store .cse12 v_DerPreprocessor_38 1) |v_ULTIMATE.start_append_to_list_~node~0#1.base_156|) 0)) (< |c_ULTIMATE.start_main_~base~0#1| (+ (select (select .cse11 v_DerPreprocessor_38) .cse2) 1)) (< |c_ULTIMATE.start_main_~base~0#1| (+ (select (select .cse11 v_ArrVal_2198) .cse2) 1)) (not (= (select .cse13 v_ArrVal_2198) 0)))))) (forall ((v_ArrVal_2193 (Array Int Int)) (v_DerPreprocessor_36 Int) (v_ArrVal_2207 (Array Int Int)) (v_ArrVal_2198 Int) (v_DerPreprocessor_38 Int) (|v_ULTIMATE.start_append_to_list_~node~0#1.base_156| Int) (v_ArrVal_2220 (Array Int Int)) (v_ArrVal_2185 (Array Int Int))) (let ((.cse16 (store |c_#valid| v_DerPreprocessor_36 1))) (let ((.cse14 (store (store (store (store |c_#memory_int#2| v_DerPreprocessor_36 v_ArrVal_2185) v_ArrVal_2198 v_ArrVal_2193) v_DerPreprocessor_38 v_ArrVal_2207) |v_ULTIMATE.start_append_to_list_~node~0#1.base_156| v_ArrVal_2220)) (.cse15 (store .cse16 v_ArrVal_2198 1))) (or (not (= (select |c_#valid| v_DerPreprocessor_36) 0)) (< |c_ULTIMATE.start_main_~base~0#1| (+ (select (select .cse14 v_DerPreprocessor_36) .cse2) 1)) (< |c_ULTIMATE.start_main_~base~0#1| (+ 1 (select (select .cse14 .cse1) .cse2))) (not (= (select .cse15 v_DerPreprocessor_38) 0)) (not (= (select (store .cse15 v_DerPreprocessor_38 1) |v_ULTIMATE.start_append_to_list_~node~0#1.base_156|) 0)) (not (= (select .cse16 v_ArrVal_2198) 0)))))) (forall ((v_ArrVal_2193 (Array Int Int)) (v_DerPreprocessor_36 Int) (v_ArrVal_2207 (Array Int Int)) (v_ArrVal_2198 Int) (v_DerPreprocessor_38 Int) (|v_ULTIMATE.start_append_to_list_~node~0#1.base_156| Int) (v_ArrVal_2220 (Array Int Int)) (v_ArrVal_2185 (Array Int Int))) (let ((.cse19 (store |c_#valid| v_DerPreprocessor_36 1))) (let ((.cse18 (store .cse19 v_ArrVal_2198 1)) (.cse17 (store (store (store (store |c_#memory_int#2| v_DerPreprocessor_36 v_ArrVal_2185) v_ArrVal_2198 v_ArrVal_2193) v_DerPreprocessor_38 v_ArrVal_2207) |v_ULTIMATE.start_append_to_list_~node~0#1.base_156| v_ArrVal_2220))) (or (not (= (select |c_#valid| v_DerPreprocessor_36) 0)) (< |c_ULTIMATE.start_main_~base~0#1| (+ 1 (select (select .cse17 .cse1) .cse2))) (not (= (select .cse18 v_DerPreprocessor_38) 0)) (not (= (select (store .cse18 v_DerPreprocessor_38 1) |v_ULTIMATE.start_append_to_list_~node~0#1.base_156|) 0)) (< |c_ULTIMATE.start_main_~base~0#1| (+ (select (select .cse17 v_DerPreprocessor_38) .cse2) 1)) (not (= (select .cse19 v_ArrVal_2198) 0)))))) (forall ((v_ArrVal_2193 (Array Int Int)) (v_DerPreprocessor_36 Int) (v_ArrVal_2207 (Array Int Int)) (v_ArrVal_2198 Int) (v_DerPreprocessor_38 Int) (|v_ULTIMATE.start_append_to_list_~node~0#1.base_156| Int) (v_ArrVal_2220 (Array Int Int)) (v_ArrVal_2185 (Array Int Int))) (let ((.cse21 (store |c_#valid| v_DerPreprocessor_36 1))) (let ((.cse20 (store .cse21 v_ArrVal_2198 1))) (or (not (= (select |c_#valid| v_DerPreprocessor_36) 0)) (< |c_ULTIMATE.start_main_~base~0#1| (+ 1 (select (select (store (store (store (store |c_#memory_int#2| v_DerPreprocessor_36 v_ArrVal_2185) v_ArrVal_2198 v_ArrVal_2193) v_DerPreprocessor_38 v_ArrVal_2207) |v_ULTIMATE.start_append_to_list_~node~0#1.base_156| v_ArrVal_2220) .cse1) .cse2))) (not (= (select .cse20 v_DerPreprocessor_38) 0)) (not (= (select (store .cse20 v_DerPreprocessor_38 1) |v_ULTIMATE.start_append_to_list_~node~0#1.base_156|) 0)) (not (= (select .cse21 v_ArrVal_2198) 0)))))) (forall ((v_ArrVal_2193 (Array Int Int)) (v_DerPreprocessor_36 Int) (v_ArrVal_2207 (Array Int Int)) (v_ArrVal_2198 Int) (v_DerPreprocessor_38 Int) (|v_ULTIMATE.start_append_to_list_~node~0#1.base_156| Int) (v_ArrVal_2220 (Array Int Int)) (v_ArrVal_2185 (Array Int Int))) (let ((.cse24 (store |c_#valid| v_DerPreprocessor_36 1))) (let ((.cse23 (store .cse24 v_ArrVal_2198 1)) (.cse22 (store (store (store (store |c_#memory_int#2| v_DerPreprocessor_36 v_ArrVal_2185) v_ArrVal_2198 v_ArrVal_2193) v_DerPreprocessor_38 v_ArrVal_2207) |v_ULTIMATE.start_append_to_list_~node~0#1.base_156| v_ArrVal_2220))) (or (not (= (select |c_#valid| v_DerPreprocessor_36) 0)) (< |c_ULTIMATE.start_main_~base~0#1| (+ (select (select .cse22 v_DerPreprocessor_36) .cse2) 1)) (< |c_ULTIMATE.start_main_~base~0#1| (+ 1 (select (select .cse22 .cse1) .cse2))) (not (= (select .cse23 v_DerPreprocessor_38) 0)) (not (= (select (store .cse23 v_DerPreprocessor_38 1) |v_ULTIMATE.start_append_to_list_~node~0#1.base_156|) 0)) (< |c_ULTIMATE.start_main_~base~0#1| (+ (select (select .cse22 v_DerPreprocessor_38) .cse2) 1)) (not (= (select .cse24 v_ArrVal_2198) 0)))))))) is different from false [2023-12-19 17:17:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2023-12-19 17:17:44,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194332318] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:17:44,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:17:44,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 13] total 32 [2023-12-19 17:17:44,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743111332] [2023-12-19 17:17:44,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:17:44,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 17:17:44,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:17:44,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 17:17:44,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=814, Unknown=2, NotChecked=58, Total=992 [2023-12-19 17:17:44,477 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 32 states, 32 states have (on average 4.375) internal successors, (140), 32 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:17:46,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:17:46,972 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2023-12-19 17:17:46,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 17:17:46,972 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.375) internal successors, (140), 32 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-19 17:17:46,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:17:46,973 INFO L225 Difference]: With dead ends: 70 [2023-12-19 17:17:46,973 INFO L226 Difference]: Without dead ends: 63 [2023-12-19 17:17:46,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 102 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=403, Invalid=1579, Unknown=2, NotChecked=86, Total=2070 [2023-12-19 17:17:46,974 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 168 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 17:17:46,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 252 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 396 Invalid, 0 Unknown, 49 Unchecked, 0.9s Time] [2023-12-19 17:17:46,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-19 17:17:46,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2023-12-19 17:17:46,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 61 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:17:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2023-12-19 17:17:46,979 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 53 [2023-12-19 17:17:46,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:17:46,979 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2023-12-19 17:17:46,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.375) internal successors, (140), 32 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:17:46,979 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2023-12-19 17:17:46,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 17:17:46,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:17:46,980 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1] [2023-12-19 17:17:46,989 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 17:17:47,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 17:17:47,186 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:17:47,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:17:47,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1472474315, now seen corresponding path program 9 times [2023-12-19 17:17:47,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:17:47,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477574146] [2023-12-19 17:17:47,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:17:47,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:17:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:17:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:17:49,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:17:49,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477574146] [2023-12-19 17:17:49,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477574146] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:17:49,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680832760] [2023-12-19 17:17:49,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:17:49,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:17:49,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:17:49,697 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 17:17:49,698 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 17:17:51,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-19 17:17:51,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:17:51,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 133 conjunts are in the unsatisfiable core [2023-12-19 17:17:51,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:17:51,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-12-19 17:17:51,671 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 10 treesize of output 9 [2023-12-19 17:17:51,675 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 30 treesize of output 11 [2023-12-19 17:17:51,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:51,683 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 30 treesize of output 11 [2023-12-19 17:17:51,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:51,722 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 46 treesize of output 30 [2023-12-19 17:17:51,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 31 [2023-12-19 17:17:51,735 INFO L349 Elim1Store]: treesize reduction 49, result has 23.4 percent of original size [2023-12-19 17:17:51,735 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 46 treesize of output 30 [2023-12-19 17:17:51,753 INFO L349 Elim1Store]: treesize reduction 50, result has 37.5 percent of original size [2023-12-19 17:17:51,754 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 33 treesize of output 45 [2023-12-19 17:17:51,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:51,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:51,866 INFO L349 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2023-12-19 17:17:51,866 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 60 [2023-12-19 17:17:51,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 63 [2023-12-19 17:17:51,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:51,883 INFO L349 Elim1Store]: treesize reduction 62, result has 38.0 percent of original size [2023-12-19 17:17:51,883 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 50 treesize of output 69 [2023-12-19 17:17:51,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:51,893 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 65 treesize of output 52 [2023-12-19 17:17:51,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:52,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,050 INFO L349 Elim1Store]: treesize reduction 88, result has 14.6 percent of original size [2023-12-19 17:17:52,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 162 treesize of output 86 [2023-12-19 17:17:52,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 66 [2023-12-19 17:17:52,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 115 [2023-12-19 17:17:52,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,082 INFO L349 Elim1Store]: treesize reduction 74, result has 38.3 percent of original size [2023-12-19 17:17:52,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 97 [2023-12-19 17:17:52,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:52,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:52,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,287 INFO L349 Elim1Store]: treesize reduction 144, result has 13.3 percent of original size [2023-12-19 17:17:52,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 250 treesize of output 112 [2023-12-19 17:17:52,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 187 [2023-12-19 17:17:52,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,310 INFO L349 Elim1Store]: treesize reduction 85, result has 24.1 percent of original size [2023-12-19 17:17:52,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 108 [2023-12-19 17:17:52,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-19 17:17:52,336 INFO L349 Elim1Store]: treesize reduction 4, result has 87.5 percent of original size [2023-12-19 17:17:52,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 44 [2023-12-19 17:17:52,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:52,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 214 [2023-12-19 17:17:52,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2023-12-19 17:17:52,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:53,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 38 [2023-12-19 17:17:53,033 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 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:53,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 42 [2023-12-19 17:17:53,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:53,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2023-12-19 17:17:53,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-19 17:17:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:17:53,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:18:07,696 INFO L349 Elim1Store]: treesize reduction 484, result has 35.4 percent of original size [2023-12-19 17:18:07,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 16 case distinctions, treesize of input 4752 treesize of output 1519 Received shutdown request... [2023-12-19 17:29:41,050 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 17:29:41,085 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 17:29:42,073 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 17:29:42,286 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-19 17:29:42,327 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-19 17:29:42,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 17:29:42,327 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Not enough levels on assertion stack at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:543) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:522) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:515) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:326) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Not enough levels on assertion stack at de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.restore(UndoableWrapperScript.java:87) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:233) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:346) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:227) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) ... 54 more [2023-12-19 17:29:42,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-19 17:29:42,349 INFO L158 Benchmark]: Toolchain (without parser) took 865010.67ms. Allocated memory was 268.4MB in the beginning and 6.2GB in the end (delta: 5.9GB). Free memory was 219.3MB in the beginning and 4.5GB in the end (delta: -4.3GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2023-12-19 17:29:42,349 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 172.0MB. Free memory is still 124.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 17:29:42,349 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.58ms. Allocated memory is still 268.4MB. Free memory was 218.9MB in the beginning and 201.5MB in the end (delta: 17.4MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-19 17:29:42,349 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.30ms. Allocated memory is still 268.4MB. Free memory was 201.5MB in the beginning and 199.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 17:29:42,349 INFO L158 Benchmark]: Boogie Preprocessor took 33.43ms. Allocated memory is still 268.4MB. Free memory was 199.4MB in the beginning and 197.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 17:29:42,349 INFO L158 Benchmark]: RCFGBuilder took 352.19ms. Allocated memory is still 268.4MB. Free memory was 196.9MB in the beginning and 181.6MB in the end (delta: 15.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-19 17:29:42,349 INFO L158 Benchmark]: TraceAbstraction took 864259.47ms. Allocated memory was 268.4MB in the beginning and 6.2GB in the end (delta: 5.9GB). Free memory was 181.2MB in the beginning and 4.5GB in the end (delta: -4.3GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. [2023-12-19 17:29:42,350 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 172.0MB. Free memory is still 124.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 308.58ms. Allocated memory is still 268.4MB. Free memory was 218.9MB in the beginning and 201.5MB in the end (delta: 17.4MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.30ms. Allocated memory is still 268.4MB. Free memory was 201.5MB in the beginning and 199.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.43ms. Allocated memory is still 268.4MB. Free memory was 199.4MB in the beginning and 197.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 352.19ms. Allocated memory is still 268.4MB. Free memory was 196.9MB in the beginning and 181.6MB in the end (delta: 15.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 864259.47ms. Allocated memory was 268.4MB in the beginning and 6.2GB in the end (delta: 5.9GB). Free memory was 181.2MB in the beginning and 4.5GB in the end (delta: -4.3GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Not enough levels on assertion stack de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Not enough levels on assertion stack: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown