/usr/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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/array-patterns/array14_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 19:29:28,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 19:29:28,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 19:29:28,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 19:29:28,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 19:29:28,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 19:29:28,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 19:29:28,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 19:29:28,971 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 19:29:28,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 19:29:28,971 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 19:29:28,971 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 19:29:28,972 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 19:29:28,972 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 19:29:28,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 19:29:28,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 19:29:28,973 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 19:29:28,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 19:29:28,973 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 19:29:28,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 19:29:28,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 19:29:28,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 19:29:28,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 19:29:28,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 19:29:28,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 19:29:28,974 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 19:29:28,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 19:29:28,975 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 19:29:28,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 19:29:28,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 19:29:28,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 19:29:28,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 19:29:28,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 19:29:28,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 19:29:28,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 19:29:28,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 19:29:28,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 19:29:28,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 19:29:28,976 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 19:29:28,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 19:29:28,976 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 19:29:28,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 19:29:28,977 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 19:29:28,977 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 19:29:29,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 19:29:29,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 19:29:29,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 19:29:29,182 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 19:29:29,184 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 19:29:29,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array14_pattern.c [2023-04-01 19:29:30,193 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 19:29:30,394 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 19:29:30,395 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array14_pattern.c [2023-04-01 19:29:30,399 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/850fb68f1/3b2e9e84518e483fa503f5dd10e4d1b9/FLAG84d175f83 [2023-04-01 19:29:30,411 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/850fb68f1/3b2e9e84518e483fa503f5dd10e4d1b9 [2023-04-01 19:29:30,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 19:29:30,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 19:29:30,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 19:29:30,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 19:29:30,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 19:29:30,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 07:29:30" (1/1) ... [2023-04-01 19:29:30,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c3cd101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:29:30, skipping insertion in model container [2023-04-01 19:29:30,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 07:29:30" (1/1) ... [2023-04-01 19:29:30,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 19:29:30,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 19:29:30,539 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array14_pattern.c[1285,1298] [2023-04-01 19:29:30,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 19:29:30,559 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 19:29:30,567 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array14_pattern.c[1285,1298] [2023-04-01 19:29:30,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 19:29:30,582 INFO L208 MainTranslator]: Completed translation [2023-04-01 19:29:30,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:29:30 WrapperNode [2023-04-01 19:29:30,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 19:29:30,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 19:29:30,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 19:29:30,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 19:29:30,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:29:30" (1/1) ... [2023-04-01 19:29:30,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:29:30" (1/1) ... [2023-04-01 19:29:30,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:29:30" (1/1) ... [2023-04-01 19:29:30,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:29:30" (1/1) ... [2023-04-01 19:29:30,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:29:30" (1/1) ... [2023-04-01 19:29:30,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:29:30" (1/1) ... [2023-04-01 19:29:30,612 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:29:30" (1/1) ... [2023-04-01 19:29:30,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:29:30" (1/1) ... [2023-04-01 19:29:30,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 19:29:30,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 19:29:30,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 19:29:30,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 19:29:30,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:29:30" (1/1) ... [2023-04-01 19:29:30,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 19:29:30,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:29:30,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 19:29:30,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 19:29:30,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 19:29:30,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 19:29:30,708 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 19:29:30,708 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 19:29:30,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 19:29:30,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 19:29:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 19:29:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 19:29:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 19:29:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 19:29:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 19:29:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 19:29:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 19:29:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2023-04-01 19:29:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 19:29:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 19:29:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 19:29:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 19:29:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 19:29:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 19:29:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 19:29:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 19:29:30,798 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 19:29:30,800 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 19:29:30,943 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 19:29:30,947 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 19:29:30,947 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 19:29:30,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 07:29:30 BoogieIcfgContainer [2023-04-01 19:29:30,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 19:29:30,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 19:29:30,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 19:29:30,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 19:29:30,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 07:29:30" (1/3) ... [2023-04-01 19:29:30,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bd6938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 07:29:30, skipping insertion in model container [2023-04-01 19:29:30,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:29:30" (2/3) ... [2023-04-01 19:29:30,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bd6938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 07:29:30, skipping insertion in model container [2023-04-01 19:29:30,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 07:29:30" (3/3) ... [2023-04-01 19:29:30,955 INFO L112 eAbstractionObserver]: Analyzing ICFG array14_pattern.c [2023-04-01 19:29:30,967 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 19:29:30,967 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 19:29:31,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 19:29:31,034 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=LoopsAndPotentialCycles, 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;@6afd7baa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 19:29:31,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 19:29:31,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 19:29:31,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-04-01 19:29:31,054 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:29:31,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:29:31,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:29:31,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:29:31,072 INFO L85 PathProgramCache]: Analyzing trace with hash -852407714, now seen corresponding path program 1 times [2023-04-01 19:29:31,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:29:31,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157025632] [2023-04-01 19:29:31,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:29:31,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:29:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:29:31,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:29:31,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157025632] [2023-04-01 19:29:31,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-01 19:29:31,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758034890] [2023-04-01 19:29:31,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:29:31,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:29:31,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:29:31,213 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) [2023-04-01 19:29:31,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 19:29:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:29:31,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-01 19:29:31,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:29:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:29:31,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 19:29:31,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758034890] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:29:31,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:29:31,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 19:29:31,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987198996] [2023-04-01 19:29:31,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:29:31,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 19:29:31,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:29:31,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 19:29:31,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 19:29:31,361 INFO L87 Difference]: Start difference. First operand has 39 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 28 states have internal predecessors, (42), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:29:31,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:29:31,385 INFO L93 Difference]: Finished difference Result 71 states and 104 transitions. [2023-04-01 19:29:31,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 19:29:31,386 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-04-01 19:29:31,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:29:31,391 INFO L225 Difference]: With dead ends: 71 [2023-04-01 19:29:31,391 INFO L226 Difference]: Without dead ends: 32 [2023-04-01 19:29:31,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 19:29:31,397 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 19:29:31,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 19:29:31,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-04-01 19:29:31,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-04-01 19:29:31,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 19:29:31,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-04-01 19:29:31,433 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 20 [2023-04-01 19:29:31,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:29:31,434 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-04-01 19:29:31,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:29:31,435 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-04-01 19:29:31,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-04-01 19:29:31,437 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:29:31,437 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:29:31,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 19:29:31,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-01 19:29:31,642 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:29:31,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:29:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash -992838655, now seen corresponding path program 1 times [2023-04-01 19:29:31,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:29:31,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927614910] [2023-04-01 19:29:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:29:31,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:29:31,658 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:29:31,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889425650] [2023-04-01 19:29:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:29:31,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:29:31,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:29:31,670 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) [2023-04-01 19:29:31,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 19:29:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:29:31,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 19:29:31,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:29:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 19:29:31,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 19:29:31,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:29:31,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927614910] [2023-04-01 19:29:31,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:29:31,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889425650] [2023-04-01 19:29:31,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889425650] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:29:31,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:29:31,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 19:29:31,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261978312] [2023-04-01 19:29:31,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:29:31,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 19:29:31,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:29:31,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 19:29:31,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 19:29:31,806 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 19:29:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:29:31,921 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2023-04-01 19:29:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 19:29:31,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2023-04-01 19:29:31,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:29:31,924 INFO L225 Difference]: With dead ends: 64 [2023-04-01 19:29:31,924 INFO L226 Difference]: Without dead ends: 44 [2023-04-01 19:29:31,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-04-01 19:29:31,926 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 48 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 19:29:31,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 72 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 19:29:31,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-04-01 19:29:31,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2023-04-01 19:29:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 19:29:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-04-01 19:29:31,945 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2023-04-01 19:29:31,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:29:31,945 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-04-01 19:29:31,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 19:29:31,945 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-04-01 19:29:31,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-04-01 19:29:31,946 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:29:31,947 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:29:31,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 19:29:32,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-04-01 19:29:32,153 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:29:32,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:29:32,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1764272576, now seen corresponding path program 1 times [2023-04-01 19:29:32,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:29:32,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088309429] [2023-04-01 19:29:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:29:32,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:29:32,177 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:29:32,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878049682] [2023-04-01 19:29:32,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:29:32,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:29:32,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:29:32,178 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) [2023-04-01 19:29:32,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 19:29:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:29:32,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 19:29:32,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:29:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 19:29:32,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 19:29:32,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:29:32,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088309429] [2023-04-01 19:29:32,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:29:32,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878049682] [2023-04-01 19:29:32,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878049682] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:29:32,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:29:32,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 19:29:32,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567714261] [2023-04-01 19:29:32,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:29:32,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 19:29:32,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:29:32,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 19:29:32,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 19:29:32,249 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 19:29:32,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:29:32,280 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2023-04-01 19:29:32,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 19:29:32,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2023-04-01 19:29:32,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:29:32,282 INFO L225 Difference]: With dead ends: 67 [2023-04-01 19:29:32,282 INFO L226 Difference]: Without dead ends: 42 [2023-04-01 19:29:32,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 19:29:32,283 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 19:29:32,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 67 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 19:29:32,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-04-01 19:29:32,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2023-04-01 19:29:32,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 19:29:32,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2023-04-01 19:29:32,288 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 39 [2023-04-01 19:29:32,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:29:32,288 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2023-04-01 19:29:32,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 19:29:32,288 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2023-04-01 19:29:32,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-01 19:29:32,289 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:29:32,289 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:29:32,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 19:29:32,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:29:32,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:29:32,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:29:32,495 INFO L85 PathProgramCache]: Analyzing trace with hash 629815328, now seen corresponding path program 1 times [2023-04-01 19:29:32,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:29:32,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933373264] [2023-04-01 19:29:32,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:29:32,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:29:32,507 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:29:32,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978069907] [2023-04-01 19:29:32,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:29:32,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:29:32,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:29:32,509 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) [2023-04-01 19:29:32,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 19:29:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:29:32,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 38 conjunts are in the unsatisfiable core [2023-04-01 19:29:32,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:29:32,652 INFO L350 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 [2023-04-01 19:29:32,904 INFO L350 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 139 treesize of output 128 [2023-04-01 19:29:32,983 INFO L321 Elim1Store]: treesize reduction 116, result has 24.2 percent of original size [2023-04-01 19:29:32,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 131 treesize of output 575 [2023-04-01 19:29:34,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:34,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:34,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:34,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:34,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:34,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:34,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:34,657 INFO L321 Elim1Store]: treesize reduction 175, result has 2.8 percent of original size [2023-04-01 19:29:34,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 289 treesize of output 585 [2023-04-01 19:29:35,979 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:35,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:35,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:35,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:35,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:35,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:35,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:35,994 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:35,994 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:36,004 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:36,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 603 [2023-04-01 19:29:36,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:36,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:36,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:36,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:36,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:36,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:36,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:38,810 INFO L321 Elim1Store]: treesize reduction 744, result has 11.4 percent of original size [2023-04-01 19:29:38,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 13 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 16 new quantified variables, introduced 25 case distinctions, treesize of input 680 treesize of output 10441 [2023-04-01 19:29:51,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:51,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:51,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:51,734 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:52,002 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:52,901 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:52,999 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:53,001 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:53,001 INFO L217 Elim1Store]: Index analysis took 1391 ms [2023-04-01 19:29:53,003 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:53,005 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:53,010 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:53,013 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:53,014 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:53,016 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:53,017 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:53,017 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:53,174 INFO L321 Elim1Store]: treesize reduction 88, result has 1.1 percent of original size [2023-04-01 19:29:53,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 656 treesize of output 4657 [2023-04-01 19:29:54,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:54,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:54,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:54,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:54,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:54,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:29:54,677 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:54,724 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:54,816 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:54,852 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:54,859 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:54,865 INFO L217 Elim1Store]: Index analysis took 545 ms [2023-04-01 19:29:54,866 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:54,867 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:54,875 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:54,877 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:54,878 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:54,879 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:54,880 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:54,881 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:29:55,124 INFO L321 Elim1Store]: treesize reduction 173, result has 30.2 percent of original size [2023-04-01 19:29:55,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 8 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 848 treesize of output 10994 [2023-04-01 19:30:07,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:07,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:07,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:07,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:07,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:07,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:07,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:07,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:08,757 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:30:08,986 INFO L217 Elim1Store]: Index analysis took 1221 ms [2023-04-01 19:30:09,136 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:30:09,241 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:30:09,253 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:30:09,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:12,338 INFO L321 Elim1Store]: treesize reduction 925, result has 6.0 percent of original size [2023-04-01 19:30:12,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 12 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 2326 treesize of output 31315 [2023-04-01 19:30:37,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:37,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:37,850 INFO L321 Elim1Store]: treesize reduction 125, result has 3.8 percent of original size [2023-04-01 19:30:37,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 542 treesize of output 4385 [2023-04-01 19:30:38,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:38,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:38,070 INFO L321 Elim1Store]: treesize reduction 63, result has 14.9 percent of original size [2023-04-01 19:30:38,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 337 treesize of output 1544 [2023-04-01 19:30:38,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:38,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:38,177 INFO L321 Elim1Store]: treesize reduction 77, result has 8.3 percent of original size [2023-04-01 19:30:38,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 349 treesize of output 1543 [2023-04-01 19:30:38,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:38,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:38,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:38,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:38,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:38,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:38,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:38,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:38,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:38,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:38,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:40,972 INFO L321 Elim1Store]: treesize reduction 528, result has 16.6 percent of original size [2023-04-01 19:30:40,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 22 case distinctions, treesize of input 1250 treesize of output 10111 [2023-04-01 19:30:44,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:44,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:44,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:44,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:44,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:44,195 INFO L217 Elim1Store]: Index analysis took 177 ms [2023-04-01 19:30:44,198 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:30:44,665 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:30:45,624 INFO L321 Elim1Store]: treesize reduction 199, result has 12.3 percent of original size [2023-04-01 19:30:45,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 2894 treesize of output 4620 [2023-04-01 19:30:46,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:46,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:46,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:46,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:46,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:30:46,853 INFO L217 Elim1Store]: Index analysis took 112 ms [2023-04-01 19:30:46,854 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:30:47,590 INFO L321 Elim1Store]: treesize reduction 98, result has 30.5 percent of original size [2023-04-01 19:30:47,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 1998 treesize of output 8812 [2023-04-01 19:31:55,777 WARN L223 SmtUtils]: Spent 49.62s on a formula simplification. DAG size of input: 1114 DAG size of output: 565 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:32:21,713 WARN L223 SmtUtils]: Spent 16.38s on a formula simplification that was a NOOP. DAG size: 567 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:32:50,252 WARN L223 SmtUtils]: Spent 19.15s on a formula simplification that was a NOOP. DAG size: 569 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:32:50,547 INFO L350 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 21924 treesize of output 21592 [2023-04-01 19:32:59,090 INFO L321 Elim1Store]: treesize reduction 859, result has 7.0 percent of original size [2023-04-01 19:32:59,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 10 new quantified variables, introduced 17 case distinctions, treesize of input 774 treesize of output 5759 [2023-04-01 19:33:35,413 WARN L223 SmtUtils]: Spent 6.63s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-04-01 19:33:35,413 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 19:33:35,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 711404977999198968 treesize of output 711404977999198990 [2023-04-01 19:33:48,961 WARN L223 SmtUtils]: Spent 11.96s on a formula simplification. DAG size of input: 255068 DAG size of output: 48 (called from [L 809] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-04-01 19:33:49,343 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-04-01 19:33:49,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 16 [2023-04-01 19:33:49,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:49,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:49,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:49,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:49,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:49,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:49,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:49,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:49,749 INFO L217 Elim1Store]: Index analysis took 222 ms [2023-04-01 19:33:49,870 INFO L321 Elim1Store]: treesize reduction 849, result has 0.1 percent of original size [2023-04-01 19:33:49,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 17 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 21 new quantified variables, introduced 33 case distinctions, treesize of input 6074 treesize of output 145293 [2023-04-01 19:33:49,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:49,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:49,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:49,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:49,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:49,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,042 INFO L321 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2023-04-01 19:33:50,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 321 [2023-04-01 19:33:50,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,128 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 19:33:50,128 INFO L350 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 113 treesize of output 35 [2023-04-01 19:33:50,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:33:50,330 INFO L321 Elim1Store]: treesize reduction 372, result has 0.3 percent of original size [2023-04-01 19:33:50,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 11 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 15 new quantified variables, introduced 19 case distinctions, treesize of input 2332 treesize of output 33074 [2023-04-01 19:33:50,436 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2023-04-01 19:33:50,436 INFO L350 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 88 treesize of output 76 [2023-04-01 19:33:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 19:33:52,288 INFO L327 TraceCheckSpWp]: Computing backward predicates...