/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/nla-digbench-scaling/ps5-ll_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 02:41:01,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 02:41:01,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 02:41:01,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 02:41:01,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 02:41:01,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 02:41:01,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 02:41:01,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 02:41:01,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 02:41:01,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 02:41:01,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 02:41:01,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 02:41:01,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 02:41:01,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 02:41:01,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 02:41:01,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 02:41:01,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 02:41:01,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 02:41:01,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 02:41:01,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 02:41:01,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 02:41:01,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 02:41:01,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 02:41:01,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 02:41:01,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 02:41:01,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 02:41:01,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 02:41:01,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 02:41:01,494 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 [2023-04-02 02:41:01,515 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 02:41:01,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 02:41:01,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 02:41:01,515 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 02:41:01,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 02:41:01,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 02:41:01,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 02:41:01,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 02:41:01,517 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 02:41:01,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 02:41:01,517 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 02:41:01,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 02:41:01,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 02:41:01,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 02:41:01,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 02:41:01,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 02:41:01,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 02:41:01,518 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 02:41:01,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 02:41:01,518 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 02:41:01,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 02:41:01,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 02:41:01,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 02:41:01,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 02:41:01,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 02:41:01,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 02:41:01,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 02:41:01,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 02:41:01,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 02:41:01,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 02:41:01,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 02:41:01,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 02:41:01,520 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 02:41:01,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 02:41:01,520 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 02:41:01,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 02:41:01,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 02:41:01,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 02:41:01,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 02:41:01,728 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 02:41:01,729 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 02:41:01,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound100.c [2023-04-02 02:41:02,942 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 02:41:03,096 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 02:41:03,097 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound100.c [2023-04-02 02:41:03,103 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3580efea/c83dc98da4974096afff1056eb6ca5de/FLAG2010c22fb [2023-04-02 02:41:03,117 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3580efea/c83dc98da4974096afff1056eb6ca5de [2023-04-02 02:41:03,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 02:41:03,125 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 02:41:03,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 02:41:03,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 02:41:03,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 02:41:03,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 02:41:03" (1/1) ... [2023-04-02 02:41:03,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5655bd65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:41:03, skipping insertion in model container [2023-04-02 02:41:03,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 02:41:03" (1/1) ... [2023-04-02 02:41:03,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 02:41:03,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 02:41:03,264 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/nla-digbench-scaling/ps5-ll_unwindbound100.c[458,471] [2023-04-02 02:41:03,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 02:41:03,287 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 02:41:03,299 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/nla-digbench-scaling/ps5-ll_unwindbound100.c[458,471] [2023-04-02 02:41:03,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 02:41:03,322 INFO L208 MainTranslator]: Completed translation [2023-04-02 02:41:03,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:41:03 WrapperNode [2023-04-02 02:41:03,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 02:41:03,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 02:41:03,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 02:41:03,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 02:41:03,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:41:03" (1/1) ... [2023-04-02 02:41:03,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:41:03" (1/1) ... [2023-04-02 02:41:03,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:41:03" (1/1) ... [2023-04-02 02:41:03,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:41:03" (1/1) ... [2023-04-02 02:41:03,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:41:03" (1/1) ... [2023-04-02 02:41:03,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:41:03" (1/1) ... [2023-04-02 02:41:03,344 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:41:03" (1/1) ... [2023-04-02 02:41:03,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:41:03" (1/1) ... [2023-04-02 02:41:03,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 02:41:03,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 02:41:03,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 02:41:03,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 02:41:03,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:41:03" (1/1) ... [2023-04-02 02:41:03,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 02:41:03,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:41:03,382 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) [2023-04-02 02:41:03,383 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 [2023-04-02 02:41:03,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 02:41:03,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 02:41:03,411 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 02:41:03,412 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 02:41:03,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 02:41:03,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 02:41:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 02:41:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 02:41:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 02:41:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 02:41:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2023-04-02 02:41:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 02:41:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 02:41:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 02:41:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 02:41:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 02:41:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 02:41:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 02:41:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 02:41:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 02:41:03,468 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 02:41:03,470 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 02:41:03,572 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 02:41:03,577 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 02:41:03,577 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 02:41:03,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 02:41:03 BoogieIcfgContainer [2023-04-02 02:41:03,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 02:41:03,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 02:41:03,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 02:41:03,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 02:41:03,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 02:41:03" (1/3) ... [2023-04-02 02:41:03,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2765ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 02:41:03, skipping insertion in model container [2023-04-02 02:41:03,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:41:03" (2/3) ... [2023-04-02 02:41:03,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2765ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 02:41:03, skipping insertion in model container [2023-04-02 02:41:03,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 02:41:03" (3/3) ... [2023-04-02 02:41:03,586 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_unwindbound100.c [2023-04-02 02:41:03,601 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 02:41:03,601 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 02:41:03,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 02:41:03,653 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;@7ef64948, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 02:41:03,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 02:41:03,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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) [2023-04-02 02:41:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 02:41:03,665 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:41:03,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:41:03,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:41:03,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:41:03,671 INFO L85 PathProgramCache]: Analyzing trace with hash 21872251, now seen corresponding path program 1 times [2023-04-02 02:41:03,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:41:03,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034269446] [2023-04-02 02:41:03,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:41:03,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:41:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:41:03,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:41:03,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034269446] [2023-04-02 02:41:03,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-02 02:41:03,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8235419] [2023-04-02 02:41:03,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:41:03,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:41:03,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:41:03,805 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) [2023-04-02 02:41:03,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 02:41:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:41:03,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-02 02:41:03,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:41:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:41:03,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:41:03,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8235419] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:41:03,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:41:03,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 02:41:03,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363849971] [2023-04-02 02:41:03,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:41:03,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 02:41:03,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:41:04,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 02:41:04,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 02:41:04,022 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-04-02 02:41:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:41:04,039 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2023-04-02 02:41:04,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 02:41:04,041 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 17 [2023-04-02 02:41:04,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:41:04,050 INFO L225 Difference]: With dead ends: 49 [2023-04-02 02:41:04,050 INFO L226 Difference]: Without dead ends: 24 [2023-04-02 02:41:04,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 02:41:04,055 INFO L413 NwaCegarLoop]: 32 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, 32 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 [2023-04-02 02:41:04,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:41:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-04-02 02:41:04,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-04-02 02:41:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 02:41:04,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-04-02 02:41:04,107 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 17 [2023-04-02 02:41:04,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:41:04,107 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-04-02 02:41:04,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-04-02 02:41:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-04-02 02:41:04,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 02:41:04,110 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:41:04,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:41:04,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 02:41:04,316 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 [2023-04-02 02:41:04,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:41:04,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:41:04,317 INFO L85 PathProgramCache]: Analyzing trace with hash -119968982, now seen corresponding path program 1 times [2023-04-02 02:41:04,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:41:04,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600937421] [2023-04-02 02:41:04,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:41:04,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:41:04,339 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:41:04,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630459424] [2023-04-02 02:41:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:41:04,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:41:04,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:41:04,343 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) [2023-04-02 02:41:04,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 02:41:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:41:04,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 02:41:04,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:41:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:41:04,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:41:04,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:41:04,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600937421] [2023-04-02 02:41:04,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:41:04,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630459424] [2023-04-02 02:41:04,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630459424] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:41:04,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:41:04,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 02:41:04,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683261671] [2023-04-02 02:41:04,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:41:04,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 02:41:04,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:41:04,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 02:41:04,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 02:41:04,488 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 02:41:04,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:41:04,512 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2023-04-02 02:41:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 02:41:04,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-04-02 02:41:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:41:04,514 INFO L225 Difference]: With dead ends: 34 [2023-04-02 02:41:04,514 INFO L226 Difference]: Without dead ends: 26 [2023-04-02 02:41:04,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 02:41:04,517 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:41:04,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:41:04,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-04-02 02:41:04,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-04-02 02:41:04,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 02:41:04,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-04-02 02:41:04,526 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2023-04-02 02:41:04,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:41:04,527 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-04-02 02:41:04,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 02:41:04,527 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-04-02 02:41:04,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 02:41:04,527 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:41:04,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:41:04,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 02:41:04,733 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 [2023-04-02 02:41:04,734 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:41:04,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:41:04,735 INFO L85 PathProgramCache]: Analyzing trace with hash -118181522, now seen corresponding path program 1 times [2023-04-02 02:41:04,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:41:04,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633374377] [2023-04-02 02:41:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:41:04,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:41:04,751 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:41:04,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800131617] [2023-04-02 02:41:04,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:41:04,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:41:04,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:41:04,753 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) [2023-04-02 02:41:04,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 02:41:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:41:04,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-02 02:41:04,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:41:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:41:04,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:41:04,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:41:04,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633374377] [2023-04-02 02:41:04,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:41:04,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800131617] [2023-04-02 02:41:04,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800131617] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:41:04,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:41:04,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 02:41:04,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724649753] [2023-04-02 02:41:04,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:41:04,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 02:41:04,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:41:04,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 02:41:04,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 02:41:04,867 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 02:41:04,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:41:04,959 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2023-04-02 02:41:04,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 02:41:04,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-04-02 02:41:04,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:41:04,961 INFO L225 Difference]: With dead ends: 36 [2023-04-02 02:41:04,961 INFO L226 Difference]: Without dead ends: 32 [2023-04-02 02:41:04,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-02 02:41:04,966 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:41:04,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 108 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:41:04,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-04-02 02:41:04,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-04-02 02:41:04,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 02:41:04,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2023-04-02 02:41:04,979 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 18 [2023-04-02 02:41:04,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:41:04,979 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2023-04-02 02:41:04,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 02:41:04,980 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2023-04-02 02:41:04,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-02 02:41:04,981 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:41:04,982 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:41:04,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 02:41:05,187 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 [2023-04-02 02:41:05,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:41:05,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:41:05,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1364840471, now seen corresponding path program 1 times [2023-04-02 02:41:05,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:41:05,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028059431] [2023-04-02 02:41:05,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:41:05,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:41:05,204 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:41:05,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705972774] [2023-04-02 02:41:05,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:41:05,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:41:05,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:41:05,209 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) [2023-04-02 02:41:05,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 02:41:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:41:05,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 02:41:05,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:41:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:41:05,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:41:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:41:05,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:41:05,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028059431] [2023-04-02 02:41:05,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:41:05,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705972774] [2023-04-02 02:41:05,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705972774] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:41:05,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:41:05,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-04-02 02:41:05,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956329302] [2023-04-02 02:41:05,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:41:05,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 02:41:05,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:41:05,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 02:41:05,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-04-02 02:41:05,372 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-04-02 02:41:05,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:41:05,446 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2023-04-02 02:41:05,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 02:41:05,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 26 [2023-04-02 02:41:05,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:41:05,450 INFO L225 Difference]: With dead ends: 66 [2023-04-02 02:41:05,450 INFO L226 Difference]: Without dead ends: 58 [2023-04-02 02:41:05,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-04-02 02:41:05,454 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:41:05,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 85 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:41:05,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-04-02 02:41:05,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2023-04-02 02:41:05,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 37 states have internal predecessors, (41), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 02:41:05,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2023-04-02 02:41:05,463 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 26 [2023-04-02 02:41:05,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:41:05,463 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2023-04-02 02:41:05,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-04-02 02:41:05,463 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2023-04-02 02:41:05,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-02 02:41:05,464 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:41:05,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:41:05,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 02:41:05,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:41:05,665 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:41:05,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:41:05,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1363053011, now seen corresponding path program 1 times [2023-04-02 02:41:05,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:41:05,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439528015] [2023-04-02 02:41:05,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:41:05,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:41:05,692 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:41:05,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902840547] [2023-04-02 02:41:05,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:41:05,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:41:05,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:41:05,697 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) [2023-04-02 02:41:05,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 02:41:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:41:05,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 02:41:05,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:41:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:41:05,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:41:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:41:05,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:41:05,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439528015] [2023-04-02 02:41:05,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:41:05,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902840547] [2023-04-02 02:41:05,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902840547] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:41:05,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:41:05,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-04-02 02:41:05,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870753193] [2023-04-02 02:41:05,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:41:05,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 02:41:05,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:41:05,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 02:41:05,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-02 02:41:05,970 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 02:41:06,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:41:06,110 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2023-04-02 02:41:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 02:41:06,112 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2023-04-02 02:41:06,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:41:06,114 INFO L225 Difference]: With dead ends: 68 [2023-04-02 02:41:06,115 INFO L226 Difference]: Without dead ends: 60 [2023-04-02 02:41:06,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-04-02 02:41:06,117 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 20 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:41:06,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 126 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:41:06,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-04-02 02:41:06,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2023-04-02 02:41:06,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 38 states have internal predecessors, (40), 11 states have call successors, (11), 8 states have call predecessors, (11), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 02:41:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2023-04-02 02:41:06,140 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 26 [2023-04-02 02:41:06,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:41:06,140 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2023-04-02 02:41:06,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 02:41:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2023-04-02 02:41:06,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-04-02 02:41:06,142 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:41:06,142 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:41:06,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 02:41:06,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:41:06,349 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:41:06,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:41:06,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1559147673, now seen corresponding path program 1 times [2023-04-02 02:41:06,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:41:06,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178830817] [2023-04-02 02:41:06,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:41:06,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:41:06,364 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:41:06,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877860211] [2023-04-02 02:41:06,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:41:06,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:41:06,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:41:06,384 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) [2023-04-02 02:41:06,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 02:41:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:41:06,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-02 02:41:06,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:41:06,625 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-02 02:41:06,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:41:10,703 WARN L839 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (= (* c_main_~y~0 c_main_~k~0) (* c_main_~y~0 c_main_~y~0))) is different from false [2023-04-02 02:41:17,028 WARN L223 SmtUtils]: Spent 6.28s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 809] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-04-02 02:41:33,085 WARN L861 $PredicateComparison]: unable to prove that (or (forall ((v_main_~y~0_BEFORE_CALL_9 Int) (v_main_~k~0_BEFORE_CALL_4 Int)) (or (= (mod (+ (* v_main_~y~0_BEFORE_CALL_9 29) (* v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 15) (* v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 6) (* v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 10)) 30) 0) (= (* v_main_~y~0_BEFORE_CALL_9 v_main_~k~0_BEFORE_CALL_4) (* v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9)))) (not (= |c___VERIFIER_assert_#in~cond| 0))) is different from true [2023-04-02 02:41:51,419 WARN L861 $PredicateComparison]: unable to prove that (or (forall ((v_main_~y~0_BEFORE_CALL_9 Int) (v_main_~k~0_BEFORE_CALL_4 Int)) (or (= (mod (+ (* v_main_~y~0_BEFORE_CALL_9 29) (* v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 15) (* v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 6) (* v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9 10)) 30) 0) (= (* v_main_~y~0_BEFORE_CALL_9 v_main_~k~0_BEFORE_CALL_4) (* v_main_~y~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_9)))) (not (= |c___VERIFIER_assert_#in~cond| 0)) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-04-02 02:42:09,573 WARN L839 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0)) (forall ((main_~k~0 Int)) (or (< (+ c_main_~c~0 1) main_~k~0) (<= main_~k~0 c_main_~c~0) (= (+ (* main_~k~0 c_main_~y~0) main_~k~0) (+ (* 2 c_main_~y~0) (* c_main_~y~0 c_main_~y~0) 1))))) is different from false [2023-04-02 02:42:11,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:42:11,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178830817] [2023-04-02 02:42:11,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:42:11,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877860211] [2023-04-02 02:42:11,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877860211] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:42:11,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:42:11,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-04-02 02:42:11,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624707240] [2023-04-02 02:42:11,599 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 02:42:11,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 02:42:11,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:42:11,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 02:42:11,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=105, Unknown=6, NotChecked=92, Total=240 [2023-04-02 02:42:11,601 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-02 02:42:11,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:42:11,696 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2023-04-02 02:42:11,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 02:42:11,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 37 [2023-04-02 02:42:11,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:42:11,698 INFO L225 Difference]: With dead ends: 59 [2023-04-02 02:42:11,699 INFO L226 Difference]: Without dead ends: 53 [2023-04-02 02:42:11,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=56, Invalid=164, Unknown=6, NotChecked=116, Total=342 [2023-04-02 02:42:11,700 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:42:11,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 127 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:42:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-04-02 02:42:11,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-04-02 02:42:11,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 37 states have internal predecessors, (39), 10 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 02:42:11,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2023-04-02 02:42:11,709 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 37 [2023-04-02 02:42:11,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:42:11,709 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2023-04-02 02:42:11,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-02 02:42:11,710 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2023-04-02 02:42:11,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-04-02 02:42:11,711 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:42:11,711 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:42:11,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 02:42:11,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:42:11,922 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:42:11,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:42:11,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1537538120, now seen corresponding path program 2 times [2023-04-02 02:42:11,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:42:11,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542734568] [2023-04-02 02:42:11,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:42:11,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:42:11,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:42:11,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088366756] [2023-04-02 02:42:11,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 02:42:11,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:42:11,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:42:11,934 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) [2023-04-02 02:42:11,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 02:42:12,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 02:42:12,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 02:42:12,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-02 02:42:12,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:42:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 02:42:12,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:42:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 02:42:12,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:42:12,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542734568] [2023-04-02 02:42:12,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:42:12,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088366756] [2023-04-02 02:42:12,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088366756] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:42:12,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:42:12,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-04-02 02:42:12,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547265965] [2023-04-02 02:42:12,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:42:12,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 02:42:12,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:42:12,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 02:42:12,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-04-02 02:42:12,488 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 17 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2023-04-02 02:42:12,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:42:12,899 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2023-04-02 02:42:12,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 02:42:12,899 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) Word has length 45 [2023-04-02 02:42:12,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:42:12,900 INFO L225 Difference]: With dead ends: 70 [2023-04-02 02:42:12,900 INFO L226 Difference]: Without dead ends: 62 [2023-04-02 02:42:12,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2023-04-02 02:42:12,902 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 24 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:42:12,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 244 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:42:12,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-04-02 02:42:12,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2023-04-02 02:42:12,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 11 states have call successors, (11), 8 states have call predecessors, (11), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 02:42:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2023-04-02 02:42:12,917 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 45 [2023-04-02 02:42:12,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:42:12,917 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2023-04-02 02:42:12,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2023-04-02 02:42:12,919 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2023-04-02 02:42:12,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-02 02:42:12,927 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:42:12,927 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:42:12,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-02 02:42:13,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:42:13,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:42:13,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:42:13,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1953308764, now seen corresponding path program 1 times [2023-04-02 02:42:13,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:42:13,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926018512] [2023-04-02 02:42:13,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:42:13,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:42:13,145 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:42:13,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292932865] [2023-04-02 02:42:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:42:13,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:42:13,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:42:13,147 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) [2023-04-02 02:42:13,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 02:42:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:42:13,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-02 02:42:13,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:42:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 02:42:13,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:42:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-02 02:42:13,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:42:13,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926018512] [2023-04-02 02:42:13,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:42:13,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292932865] [2023-04-02 02:42:13,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292932865] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:42:13,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:42:13,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-04-02 02:42:13,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230461440] [2023-04-02 02:42:13,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:42:13,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 02:42:13,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:42:13,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 02:42:13,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-04-02 02:42:13,423 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 12 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (14), 11 states have call predecessors, (14), 12 states have call successors, (14) [2023-04-02 02:42:13,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:42:13,604 INFO L93 Difference]: Finished difference Result 134 states and 145 transitions. [2023-04-02 02:42:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 02:42:13,604 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 12 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (14), 11 states have call predecessors, (14), 12 states have call successors, (14) Word has length 55 [2023-04-02 02:42:13,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:42:13,605 INFO L225 Difference]: With dead ends: 134 [2023-04-02 02:42:13,605 INFO L226 Difference]: Without dead ends: 124 [2023-04-02 02:42:13,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2023-04-02 02:42:13,607 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 80 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:42:13,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 141 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:42:13,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-04-02 02:42:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 104. [2023-04-02 02:42:13,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 76 states have internal predecessors, (78), 19 states have call successors, (19), 14 states have call predecessors, (19), 12 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 02:42:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2023-04-02 02:42:13,632 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 55 [2023-04-02 02:42:13,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:42:13,632 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2023-04-02 02:42:13,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 12 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (14), 11 states have call predecessors, (14), 12 states have call successors, (14) [2023-04-02 02:42:13,633 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2023-04-02 02:42:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 02:42:13,633 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:42:13,634 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:42:13,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-02 02:42:13,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-04-02 02:42:13,839 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:42:13,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:42:13,840 INFO L85 PathProgramCache]: Analyzing trace with hash -423798549, now seen corresponding path program 3 times [2023-04-02 02:42:13,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:42:13,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995603379] [2023-04-02 02:42:13,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:42:13,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:42:13,851 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:42:13,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908028966] [2023-04-02 02:42:13,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 02:42:13,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:42:13,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:42:13,853 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) [2023-04-02 02:42:13,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-02 02:42:18,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-04-02 02:42:18,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 02:42:18,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 36 conjunts are in the unsatisfiable core [2023-04-02 02:42:18,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:42:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 14 proven. 60 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-02 02:42:18,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:42:19,119 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 14 proven. 60 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-02 02:42:19,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:42:19,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995603379] [2023-04-02 02:42:19,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:42:19,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908028966] [2023-04-02 02:42:19,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908028966] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:42:19,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:42:19,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2023-04-02 02:42:19,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367180908] [2023-04-02 02:42:19,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:42:19,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-02 02:42:19,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:42:19,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-02 02:42:19,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2023-04-02 02:42:19,122 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand has 23 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 16 states have call predecessors, (17), 15 states have call successors, (17) [2023-04-02 02:42:19,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:42:19,996 INFO L93 Difference]: Finished difference Result 121 states and 138 transitions. [2023-04-02 02:42:19,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 02:42:19,996 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 16 states have call predecessors, (17), 15 states have call successors, (17) Word has length 69 [2023-04-02 02:42:19,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:42:19,998 INFO L225 Difference]: With dead ends: 121 [2023-04-02 02:42:19,998 INFO L226 Difference]: Without dead ends: 110 [2023-04-02 02:42:19,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=270, Invalid=1136, Unknown=0, NotChecked=0, Total=1406 [2023-04-02 02:42:19,999 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 48 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 02:42:19,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 417 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 02:42:20,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-04-02 02:42:20,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2023-04-02 02:42:20,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 17 states have call successors, (17), 14 states have call predecessors, (17), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-04-02 02:42:20,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2023-04-02 02:42:20,021 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 69 [2023-04-02 02:42:20,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:42:20,021 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2023-04-02 02:42:20,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 16 states have call predecessors, (17), 15 states have call successors, (17) [2023-04-02 02:42:20,022 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2023-04-02 02:42:20,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 02:42:20,024 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:42:20,024 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:42:20,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-02 02:42:20,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:42:20,226 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:42:20,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:42:20,226 INFO L85 PathProgramCache]: Analyzing trace with hash 844335210, now seen corresponding path program 2 times [2023-04-02 02:42:20,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:42:20,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040222787] [2023-04-02 02:42:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:42:20,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:42:20,241 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:42:20,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194849134] [2023-04-02 02:42:20,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 02:42:20,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:42:20,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:42:20,246 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) [2023-04-02 02:42:20,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-02 02:42:20,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 02:42:20,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 02:42:20,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 25 conjunts are in the unsatisfiable core [2023-04-02 02:42:20,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:42:20,510 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 60 proven. 380 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 02:42:20,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:42:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 22 proven. 200 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-02 02:42:20,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:42:20,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040222787] [2023-04-02 02:42:20,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:42:20,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194849134] [2023-04-02 02:42:20,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194849134] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:42:20,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:42:20,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-04-02 02:42:20,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795534789] [2023-04-02 02:42:20,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:42:20,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-04-02 02:42:20,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:42:20,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-04-02 02:42:20,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2023-04-02 02:42:20,790 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 24 states have call successors, (28), 14 states have call predecessors, (28), 14 states have return successors, (26), 23 states have call predecessors, (26), 24 states have call successors, (26) [2023-04-02 02:42:21,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:42:21,262 INFO L93 Difference]: Finished difference Result 266 states and 289 transitions. [2023-04-02 02:42:21,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-04-02 02:42:21,263 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 24 states have call successors, (28), 14 states have call predecessors, (28), 14 states have return successors, (26), 23 states have call predecessors, (26), 24 states have call successors, (26) Word has length 103 [2023-04-02 02:42:21,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:42:21,264 INFO L225 Difference]: With dead ends: 266 [2023-04-02 02:42:21,264 INFO L226 Difference]: Without dead ends: 256 [2023-04-02 02:42:21,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=796, Invalid=1366, Unknown=0, NotChecked=0, Total=2162 [2023-04-02 02:42:21,266 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 215 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 02:42:21,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 187 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 02:42:21,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-04-02 02:42:21,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 206. [2023-04-02 02:42:21,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 144 states have (on average 1.0833333333333333) internal successors, (156), 154 states have internal predecessors, (156), 37 states have call successors, (37), 26 states have call predecessors, (37), 24 states have return successors, (35), 25 states have call predecessors, (35), 35 states have call successors, (35) [2023-04-02 02:42:21,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 228 transitions. [2023-04-02 02:42:21,305 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 228 transitions. Word has length 103 [2023-04-02 02:42:21,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:42:21,305 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 228 transitions. [2023-04-02 02:42:21,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 24 states have call successors, (28), 14 states have call predecessors, (28), 14 states have return successors, (26), 23 states have call predecessors, (26), 24 states have call successors, (26) [2023-04-02 02:42:21,306 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 228 transitions. [2023-04-02 02:42:21,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-02 02:42:21,307 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:42:21,307 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:42:21,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-02 02:42:21,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-02 02:42:21,513 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:42:21,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:42:21,513 INFO L85 PathProgramCache]: Analyzing trace with hash 988557105, now seen corresponding path program 4 times [2023-04-02 02:42:21,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:42:21,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375242405] [2023-04-02 02:42:21,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:42:21,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:42:21,522 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:42:21,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113579856] [2023-04-02 02:42:21,522 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 02:42:21,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:42:21,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:42:21,524 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) [2023-04-02 02:42:21,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-02 02:42:21,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 02:42:21,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 02:42:21,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 55 conjunts are in the unsatisfiable core [2023-04-02 02:42:21,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:42:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 26 proven. 264 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-04-02 02:42:21,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:42:22,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:42:22,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375242405] [2023-04-02 02:42:22,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:42:22,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113579856] [2023-04-02 02:42:22,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113579856] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:42:22,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:42:22,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-04-02 02:42:22,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189034843] [2023-04-02 02:42:22,037 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 02:42:22,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 02:42:22,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:42:22,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 02:42:22,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2023-04-02 02:42:22,038 INFO L87 Difference]: Start difference. First operand 206 states and 228 transitions. Second operand has 17 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 14 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2023-04-02 02:42:22,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:42:22,446 INFO L93 Difference]: Finished difference Result 211 states and 232 transitions. [2023-04-02 02:42:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 02:42:22,446 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 14 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 117 [2023-04-02 02:42:22,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:42:22,451 INFO L225 Difference]: With dead ends: 211 [2023-04-02 02:42:22,451 INFO L226 Difference]: Without dead ends: 205 [2023-04-02 02:42:22,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2023-04-02 02:42:22,452 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 2 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 02:42:22,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 671 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 02:42:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-04-02 02:42:22,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2023-04-02 02:42:22,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 144 states have (on average 1.0763888888888888) internal successors, (155), 153 states have internal predecessors, (155), 36 states have call successors, (36), 26 states have call predecessors, (36), 24 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2023-04-02 02:42:22,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 225 transitions. [2023-04-02 02:42:22,503 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 225 transitions. Word has length 117 [2023-04-02 02:42:22,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:42:22,504 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 225 transitions. [2023-04-02 02:42:22,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 14 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2023-04-02 02:42:22,504 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 225 transitions. [2023-04-02 02:42:22,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-04-02 02:42:22,505 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:42:22,506 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:42:22,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-02 02:42:22,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-02 02:42:22,711 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:42:22,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:42:22,711 INFO L85 PathProgramCache]: Analyzing trace with hash 636252690, now seen corresponding path program 5 times [2023-04-02 02:42:22,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:42:22,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132844532] [2023-04-02 02:42:22,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:42:22,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:42:22,722 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:42:22,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010205728] [2023-04-02 02:42:22,722 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-02 02:42:22,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:42:22,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:42:22,723 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) [2023-04-02 02:42:22,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process