/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/loop-invgen/down.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 01:27:00,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 01:27:00,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 01:27:00,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 01:27:00,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 01:27:00,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 01:27:00,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 01:27:00,285 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 01:27:00,323 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 01:27:00,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 01:27:00,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 01:27:00,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 01:27:00,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 01:27:00,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 01:27:00,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 01:27:00,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 01:27:00,326 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 01:27:00,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 01:27:00,327 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 01:27:00,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 01:27:00,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 01:27:00,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 01:27:00,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 01:27:00,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 01:27:00,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 01:27:00,328 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 01:27:00,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 01:27:00,328 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 01:27:00,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 01:27:00,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 01:27:00,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 01:27:00,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 01:27:00,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:27:00,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 01:27:00,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 01:27:00,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 01:27:00,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 01:27:00,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 01:27:00,330 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 01:27:00,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 01:27:00,330 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 01:27:00,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 01:27:00,330 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 01:27:00,331 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 01:27:00,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 01:27:00,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 01:27:00,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 01:27:00,575 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 01:27:00,575 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 01:27:00,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/down.i [2023-04-02 01:27:01,709 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 01:27:01,872 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 01:27:01,872 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/down.i [2023-04-02 01:27:01,877 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/562529c3f/d12fa07c3a97407b9eb5afd067f84061/FLAG1ae1303f0 [2023-04-02 01:27:01,892 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/562529c3f/d12fa07c3a97407b9eb5afd067f84061 [2023-04-02 01:27:01,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 01:27:01,896 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 01:27:01,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 01:27:01,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 01:27:01,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 01:27:01,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:27:01" (1/1) ... [2023-04-02 01:27:01,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c56962f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:27:01, skipping insertion in model container [2023-04-02 01:27:01,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:27:01" (1/1) ... [2023-04-02 01:27:01,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 01:27:01,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 01:27:02,067 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/loop-invgen/down.i[893,906] [2023-04-02 01:27:02,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:27:02,092 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 01:27:02,105 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/loop-invgen/down.i[893,906] [2023-04-02 01:27:02,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:27:02,121 INFO L208 MainTranslator]: Completed translation [2023-04-02 01:27:02,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:27:02 WrapperNode [2023-04-02 01:27:02,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 01:27:02,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 01:27:02,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 01:27:02,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 01:27:02,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:27:02" (1/1) ... [2023-04-02 01:27:02,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:27:02" (1/1) ... [2023-04-02 01:27:02,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:27:02" (1/1) ... [2023-04-02 01:27:02,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:27:02" (1/1) ... [2023-04-02 01:27:02,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:27:02" (1/1) ... [2023-04-02 01:27:02,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:27:02" (1/1) ... [2023-04-02 01:27:02,156 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:27:02" (1/1) ... [2023-04-02 01:27:02,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:27:02" (1/1) ... [2023-04-02 01:27:02,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 01:27:02,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 01:27:02,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 01:27:02,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 01:27:02,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:27:02" (1/1) ... [2023-04-02 01:27:02,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:27:02,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:02,194 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 01:27:02,219 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 01:27:02,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 01:27:02,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 01:27:02,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 01:27:02,239 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 01:27:02,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 01:27:02,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 01:27:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 01:27:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 01:27:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 01:27:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 01:27:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 01:27:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 01:27:02,243 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 01:27:02,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 01:27:02,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 01:27:02,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 01:27:02,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 01:27:02,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 01:27:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 01:27:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 01:27:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 01:27:02,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 01:27:02,353 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 01:27:02,362 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 01:27:02,493 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 01:27:02,502 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 01:27:02,503 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-02 01:27:02,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:27:02 BoogieIcfgContainer [2023-04-02 01:27:02,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 01:27:02,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 01:27:02,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 01:27:02,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 01:27:02,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 01:27:01" (1/3) ... [2023-04-02 01:27:02,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd531e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:27:02, skipping insertion in model container [2023-04-02 01:27:02,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:27:02" (2/3) ... [2023-04-02 01:27:02,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd531e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:27:02, skipping insertion in model container [2023-04-02 01:27:02,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:27:02" (3/3) ... [2023-04-02 01:27:02,511 INFO L112 eAbstractionObserver]: Analyzing ICFG down.i [2023-04-02 01:27:02,529 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 01:27:02,529 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 01:27:02,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 01:27:02,591 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;@787d0b6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 01:27:02,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 01:27:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:27:02,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-02 01:27:02,603 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:02,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:02,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:02,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:02,609 INFO L85 PathProgramCache]: Analyzing trace with hash 991123303, now seen corresponding path program 1 times [2023-04-02 01:27:02,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:02,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205967521] [2023-04-02 01:27:02,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:02,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:02,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:02,880 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 01:27:02,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205967521] [2023-04-02 01:27:02,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205967521] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:27:02,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:27:02,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 01:27:02,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989798342] [2023-04-02 01:27:02,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:27:02,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 01:27:02,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:02,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 01:27:02,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 01:27:02,912 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:27:03,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:03,051 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2023-04-02 01:27:03,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 01:27:03,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-04-02 01:27:03,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:03,059 INFO L225 Difference]: With dead ends: 43 [2023-04-02 01:27:03,059 INFO L226 Difference]: Without dead ends: 18 [2023-04-02 01:27:03,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-04-02 01:27:03,068 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:03,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 28 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:03,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-04-02 01:27:03,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-04-02 01:27:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:27:03,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-04-02 01:27:03,112 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2023-04-02 01:27:03,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:03,113 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-04-02 01:27:03,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:27:03,113 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-04-02 01:27:03,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-04-02 01:27:03,114 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:03,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:03,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 01:27:03,114 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:03,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:03,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1458852147, now seen corresponding path program 1 times [2023-04-02 01:27:03,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:03,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107166683] [2023-04-02 01:27:03,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:03,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:03,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:03,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:27:03,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:03,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107166683] [2023-04-02 01:27:03,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107166683] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:03,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719418911] [2023-04-02 01:27:03,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:03,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:03,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:03,316 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 01:27:03,317 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 01:27:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:03,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-02 01:27:03,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:27:03,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 01:27:03,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719418911] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:27:03,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 01:27:03,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2023-04-02 01:27:03,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066329998] [2023-04-02 01:27:03,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:27:03,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 01:27:03,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:03,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 01:27:03,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 01:27:03,440 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:27:03,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:03,474 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2023-04-02 01:27:03,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 01:27:03,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-04-02 01:27:03,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:03,476 INFO L225 Difference]: With dead ends: 30 [2023-04-02 01:27:03,476 INFO L226 Difference]: Without dead ends: 28 [2023-04-02 01:27:03,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-04-02 01:27:03,478 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:03,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 56 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 01:27:03,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-04-02 01:27:03,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2023-04-02 01:27:03,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:27:03,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2023-04-02 01:27:03,487 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2023-04-02 01:27:03,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:03,487 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2023-04-02 01:27:03,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:27:03,488 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2023-04-02 01:27:03,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-04-02 01:27:03,488 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:03,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:03,495 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 01:27:03,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:03,694 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:03,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:03,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1637271686, now seen corresponding path program 1 times [2023-04-02 01:27:03,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:03,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106388388] [2023-04-02 01:27:03,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:03,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:03,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:03,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 01:27:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:03,826 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 01:27:03,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:03,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106388388] [2023-04-02 01:27:03,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106388388] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:03,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379955323] [2023-04-02 01:27:03,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:03,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:03,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:03,831 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 01:27:03,836 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 01:27:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:03,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 01:27:03,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:03,919 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 01:27:03,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:03,985 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 01:27:03,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379955323] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:03,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:03,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 9 [2023-04-02 01:27:03,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991826196] [2023-04-02 01:27:03,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:03,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 01:27:03,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:03,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 01:27:03,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-02 01:27:03,990 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:27:04,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:04,099 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2023-04-02 01:27:04,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 01:27:04,100 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2023-04-02 01:27:04,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:04,103 INFO L225 Difference]: With dead ends: 39 [2023-04-02 01:27:04,103 INFO L226 Difference]: Without dead ends: 25 [2023-04-02 01:27:04,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-04-02 01:27:04,106 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 25 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:04,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 22 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 01:27:04,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-04-02 01:27:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-04-02 01:27:04,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:27:04,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2023-04-02 01:27:04,118 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2023-04-02 01:27:04,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:04,118 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-04-02 01:27:04,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:27:04,118 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2023-04-02 01:27:04,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-02 01:27:04,119 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:04,119 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:04,127 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 01:27:04,324 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,SelfDestructingSolverStorable2 [2023-04-02 01:27:04,325 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:04,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:04,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1400088084, now seen corresponding path program 2 times [2023-04-02 01:27:04,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:04,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143540863] [2023-04-02 01:27:04,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:04,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:04,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:04,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-04-02 01:27:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:04,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:27:04,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:04,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143540863] [2023-04-02 01:27:04,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143540863] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:04,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111499869] [2023-04-02 01:27:04,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:27:04,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:04,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:04,429 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 01:27:04,431 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 01:27:04,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:27:04,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:04,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-02 01:27:04,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:27:04,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:27:04,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111499869] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:04,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:04,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2023-04-02 01:27:04,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391357059] [2023-04-02 01:27:04,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:04,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 01:27:04,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:04,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 01:27:04,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-02 01:27:04,560 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:27:04,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:04,682 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2023-04-02 01:27:04,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 01:27:04,683 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-04-02 01:27:04,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:04,687 INFO L225 Difference]: With dead ends: 38 [2023-04-02 01:27:04,687 INFO L226 Difference]: Without dead ends: 36 [2023-04-02 01:27:04,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-04-02 01:27:04,688 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 32 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:04,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 27 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:04,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-04-02 01:27:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2023-04-02 01:27:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 01:27:04,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2023-04-02 01:27:04,701 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 22 [2023-04-02 01:27:04,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:04,701 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2023-04-02 01:27:04,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:27:04,701 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2023-04-02 01:27:04,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-04-02 01:27:04,702 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:04,702 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:04,709 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 01:27:04,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:04,908 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:04,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:04,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1800678535, now seen corresponding path program 3 times [2023-04-02 01:27:04,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:04,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459489502] [2023-04-02 01:27:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:04,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:05,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-04-02 01:27:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:05,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 01:27:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 01:27:05,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:05,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459489502] [2023-04-02 01:27:05,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459489502] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:05,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644901907] [2023-04-02 01:27:05,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:27:05,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:05,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:05,027 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 01:27:05,029 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 01:27:05,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 01:27:05,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:05,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-02 01:27:05,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 01:27:05,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 01:27:05,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644901907] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:05,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:05,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 11 [2023-04-02 01:27:05,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177260624] [2023-04-02 01:27:05,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:05,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 01:27:05,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:05,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 01:27:05,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-04-02 01:27:05,179 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:27:05,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:05,317 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2023-04-02 01:27:05,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 01:27:05,318 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2023-04-02 01:27:05,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:05,320 INFO L225 Difference]: With dead ends: 50 [2023-04-02 01:27:05,320 INFO L226 Difference]: Without dead ends: 33 [2023-04-02 01:27:05,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2023-04-02 01:27:05,321 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 26 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:05,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 42 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-04-02 01:27:05,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-04-02 01:27:05,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 01:27:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2023-04-02 01:27:05,332 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 29 [2023-04-02 01:27:05,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:05,332 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2023-04-02 01:27:05,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:27:05,333 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2023-04-02 01:27:05,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-02 01:27:05,333 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:05,334 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:05,343 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 01:27:05,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:05,540 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:05,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:05,540 INFO L85 PathProgramCache]: Analyzing trace with hash -949159955, now seen corresponding path program 4 times [2023-04-02 01:27:05,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:05,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993485177] [2023-04-02 01:27:05,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:05,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:05,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:05,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 01:27:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:05,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 01:27:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 01:27:05,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:05,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993485177] [2023-04-02 01:27:05,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993485177] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:05,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624958860] [2023-04-02 01:27:05,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 01:27:05,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:05,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:05,673 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 01:27:05,723 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 01:27:05,745 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 01:27:05,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:05,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-02 01:27:05,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 01:27:05,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 01:27:05,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624958860] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:05,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:05,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2023-04-02 01:27:05,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336647140] [2023-04-02 01:27:05,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:05,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 01:27:05,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:05,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 01:27:05,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-04-02 01:27:05,861 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:27:05,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:05,986 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2023-04-02 01:27:05,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 01:27:05,988 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2023-04-02 01:27:05,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:05,990 INFO L225 Difference]: With dead ends: 46 [2023-04-02 01:27:05,990 INFO L226 Difference]: Without dead ends: 44 [2023-04-02 01:27:05,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-04-02 01:27:05,991 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 34 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:05,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 32 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-04-02 01:27:06,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2023-04-02 01:27:06,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 01:27:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2023-04-02 01:27:06,008 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 30 [2023-04-02 01:27:06,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:06,009 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2023-04-02 01:27:06,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:27:06,009 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2023-04-02 01:27:06,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-04-02 01:27:06,009 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:06,010 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:06,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-02 01:27:06,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:06,216 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:06,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:06,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1241056410, now seen corresponding path program 5 times [2023-04-02 01:27:06,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:06,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003510665] [2023-04-02 01:27:06,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:06,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:06,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 01:27:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:06,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 01:27:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 01:27:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:06,320 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 01:27:06,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:06,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003510665] [2023-04-02 01:27:06,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003510665] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:06,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81612254] [2023-04-02 01:27:06,320 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-02 01:27:06,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:06,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:06,321 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 01:27:06,342 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 01:27:06,369 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-04-02 01:27:06,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:06,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-02 01:27:06,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 01:27:06,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 01:27:06,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81612254] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:06,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:06,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 13 [2023-04-02 01:27:06,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805036106] [2023-04-02 01:27:06,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:06,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 01:27:06,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:06,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 01:27:06,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-02 01:27:06,478 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 01:27:06,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:06,651 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2023-04-02 01:27:06,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 01:27:06,651 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2023-04-02 01:27:06,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:06,652 INFO L225 Difference]: With dead ends: 61 [2023-04-02 01:27:06,652 INFO L226 Difference]: Without dead ends: 41 [2023-04-02 01:27:06,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 73 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2023-04-02 01:27:06,653 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:06,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 42 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:06,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-04-02 01:27:06,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-04-02 01:27:06,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 01:27:06,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2023-04-02 01:27:06,660 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 37 [2023-04-02 01:27:06,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:06,660 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2023-04-02 01:27:06,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 01:27:06,660 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2023-04-02 01:27:06,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-02 01:27:06,661 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:06,661 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:06,667 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 01:27:06,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:06,867 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:06,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:06,867 INFO L85 PathProgramCache]: Analyzing trace with hash -781647668, now seen corresponding path program 6 times [2023-04-02 01:27:06,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:06,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783560323] [2023-04-02 01:27:06,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:06,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:06,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:06,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 01:27:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:06,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:27:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:06,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-02 01:27:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 01:27:06,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:06,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783560323] [2023-04-02 01:27:06,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783560323] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:06,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995429837] [2023-04-02 01:27:06,985 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-04-02 01:27:06,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:06,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:06,989 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 01:27:07,014 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 01:27:07,040 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-04-02 01:27:07,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:07,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 01:27:07,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 01:27:07,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 01:27:07,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995429837] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:07,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:07,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 13 [2023-04-02 01:27:07,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468983746] [2023-04-02 01:27:07,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:07,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 01:27:07,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:07,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 01:27:07,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-04-02 01:27:07,158 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 01:27:07,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:07,304 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2023-04-02 01:27:07,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 01:27:07,304 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 38 [2023-04-02 01:27:07,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:07,305 INFO L225 Difference]: With dead ends: 54 [2023-04-02 01:27:07,305 INFO L226 Difference]: Without dead ends: 52 [2023-04-02 01:27:07,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 77 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2023-04-02 01:27:07,306 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 36 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:07,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 37 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:07,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-04-02 01:27:07,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2023-04-02 01:27:07,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 01:27:07,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2023-04-02 01:27:07,313 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 38 [2023-04-02 01:27:07,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:07,314 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2023-04-02 01:27:07,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 01:27:07,314 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2023-04-02 01:27:07,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-04-02 01:27:07,315 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:07,315 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:07,323 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 01:27:07,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:07,521 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:07,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:07,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1058539943, now seen corresponding path program 7 times [2023-04-02 01:27:07,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:07,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028382211] [2023-04-02 01:27:07,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:07,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:07,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:07,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 01:27:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:07,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:27:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:07,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-02 01:27:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:07,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 01:27:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:07,670 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 01:27:07,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:07,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028382211] [2023-04-02 01:27:07,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028382211] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:07,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73850705] [2023-04-02 01:27:07,670 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 01:27:07,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:07,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:07,672 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 01:27:07,674 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 01:27:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:07,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-02 01:27:07,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 01:27:07,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 01:27:07,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73850705] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:07,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:07,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 15 [2023-04-02 01:27:07,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046252176] [2023-04-02 01:27:07,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:07,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 01:27:07,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:07,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 01:27:07,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-04-02 01:27:07,856 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 01:27:08,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:08,052 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2023-04-02 01:27:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 01:27:08,053 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 45 [2023-04-02 01:27:08,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:08,054 INFO L225 Difference]: With dead ends: 72 [2023-04-02 01:27:08,054 INFO L226 Difference]: Without dead ends: 49 [2023-04-02 01:27:08,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 89 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2023-04-02 01:27:08,055 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 28 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:08,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 37 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:08,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-04-02 01:27:08,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-04-02 01:27:08,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 01:27:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2023-04-02 01:27:08,063 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 45 [2023-04-02 01:27:08,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:08,063 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2023-04-02 01:27:08,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 01:27:08,063 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2023-04-02 01:27:08,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-02 01:27:08,064 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:08,064 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:08,077 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 01:27:08,275 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,SelfDestructingSolverStorable8 [2023-04-02 01:27:08,276 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:08,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:08,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1105807629, now seen corresponding path program 8 times [2023-04-02 01:27:08,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:08,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776936140] [2023-04-02 01:27:08,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:08,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:08,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:08,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-04-02 01:27:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:08,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 01:27:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:08,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 01:27:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:08,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 01:27:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:08,400 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 01:27:08,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:08,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776936140] [2023-04-02 01:27:08,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776936140] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:08,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166052655] [2023-04-02 01:27:08,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:27:08,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:08,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:08,405 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 01:27:08,428 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 01:27:08,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:27:08,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:08,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-02 01:27:08,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 01:27:08,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 01:27:08,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166052655] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:08,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:08,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 14 [2023-04-02 01:27:08,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894757954] [2023-04-02 01:27:08,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:08,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 01:27:08,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:08,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 01:27:08,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-04-02 01:27:08,590 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 11 states have internal predecessors, (30), 6 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 01:27:08,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:08,747 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2023-04-02 01:27:08,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 01:27:08,747 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 11 states have internal predecessors, (30), 6 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 46 [2023-04-02 01:27:08,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:08,748 INFO L225 Difference]: With dead ends: 62 [2023-04-02 01:27:08,748 INFO L226 Difference]: Without dead ends: 60 [2023-04-02 01:27:08,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 94 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2023-04-02 01:27:08,749 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 35 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:08,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 37 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:08,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-04-02 01:27:08,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2023-04-02 01:27:08,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 01:27:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2023-04-02 01:27:08,757 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 46 [2023-04-02 01:27:08,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:08,757 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2023-04-02 01:27:08,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 11 states have internal predecessors, (30), 6 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 01:27:08,757 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2023-04-02 01:27:08,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-02 01:27:08,758 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:08,758 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:08,766 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 01:27:08,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-02 01:27:08,964 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:08,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:08,964 INFO L85 PathProgramCache]: Analyzing trace with hash -211605946, now seen corresponding path program 9 times [2023-04-02 01:27:08,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:08,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60522257] [2023-04-02 01:27:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:08,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:09,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:09,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-04-02 01:27:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:09,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 01:27:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:09,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 01:27:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:09,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 01:27:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:09,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-02 01:27:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:09,111 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-02 01:27:09,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:09,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60522257] [2023-04-02 01:27:09,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60522257] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:09,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963807879] [2023-04-02 01:27:09,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:27:09,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:09,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:09,113 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 01:27:09,122 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 01:27:09,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-04-02 01:27:09,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:09,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 01:27:09,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:09,227 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-02 01:27:09,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:09,380 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-02 01:27:09,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963807879] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:09,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:09,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 17 [2023-04-02 01:27:09,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115895448] [2023-04-02 01:27:09,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:09,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 01:27:09,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:09,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 01:27:09,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-04-02 01:27:09,382 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 01:27:09,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:09,661 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2023-04-02 01:27:09,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 01:27:09,662 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 53 [2023-04-02 01:27:09,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:09,663 INFO L225 Difference]: With dead ends: 83 [2023-04-02 01:27:09,664 INFO L226 Difference]: Without dead ends: 57 [2023-04-02 01:27:09,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 105 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2023-04-02 01:27:09,665 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 29 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:09,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 42 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-04-02 01:27:09,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-04-02 01:27:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 01:27:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2023-04-02 01:27:09,682 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 53 [2023-04-02 01:27:09,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:09,682 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2023-04-02 01:27:09,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 01:27:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2023-04-02 01:27:09,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-02 01:27:09,686 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:09,687 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:09,693 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 01:27:09,892 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,SelfDestructingSolverStorable10 [2023-04-02 01:27:09,893 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:09,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:09,893 INFO L85 PathProgramCache]: Analyzing trace with hash 2143920044, now seen corresponding path program 10 times [2023-04-02 01:27:09,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:09,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673185523] [2023-04-02 01:27:09,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:09,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:10,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:10,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 01:27:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:10,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 01:27:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:10,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-02 01:27:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:10,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 01:27:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:10,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 01:27:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:10,066 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-02 01:27:10,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:10,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673185523] [2023-04-02 01:27:10,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673185523] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:10,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288669240] [2023-04-02 01:27:10,067 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 01:27:10,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:10,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:10,068 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 01:27:10,071 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 01:27:10,114 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 01:27:10,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:10,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-02 01:27:10,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-02 01:27:10,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-02 01:27:10,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288669240] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:10,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:10,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 15 [2023-04-02 01:27:10,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567907235] [2023-04-02 01:27:10,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:10,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 01:27:10,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:10,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 01:27:10,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-04-02 01:27:10,300 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 7 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 01:27:10,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:10,480 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2023-04-02 01:27:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 01:27:10,480 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 7 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 54 [2023-04-02 01:27:10,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:10,481 INFO L225 Difference]: With dead ends: 70 [2023-04-02 01:27:10,481 INFO L226 Difference]: Without dead ends: 68 [2023-04-02 01:27:10,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 111 SyntacticMatches, 12 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2023-04-02 01:27:10,482 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 39 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:10,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 37 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:10,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-04-02 01:27:10,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2023-04-02 01:27:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 01:27:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2023-04-02 01:27:10,488 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 54 [2023-04-02 01:27:10,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:10,489 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2023-04-02 01:27:10,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 7 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 01:27:10,489 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2023-04-02 01:27:10,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 01:27:10,490 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:10,490 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:10,497 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 01:27:10,695 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,SelfDestructingSolverStorable11 [2023-04-02 01:27:10,695 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:10,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:10,695 INFO L85 PathProgramCache]: Analyzing trace with hash -2089750841, now seen corresponding path program 11 times [2023-04-02 01:27:10,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:10,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912507837] [2023-04-02 01:27:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:10,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:10,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:10,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 01:27:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:10,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 01:27:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:10,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-02 01:27:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:10,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 01:27:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:10,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 01:27:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 01:27:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-02 01:27:10,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:10,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912507837] [2023-04-02 01:27:10,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912507837] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:10,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808133637] [2023-04-02 01:27:10,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-02 01:27:10,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:10,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:10,893 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 01:27:10,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-02 01:27:10,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-04-02 01:27:10,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:10,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-02 01:27:10,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-02 01:27:10,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-02 01:27:11,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808133637] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:11,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:11,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 19 [2023-04-02 01:27:11,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771224093] [2023-04-02 01:27:11,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:11,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 01:27:11,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:11,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 01:27:11,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-04-02 01:27:11,108 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 01:27:11,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:11,389 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2023-04-02 01:27:11,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 01:27:11,389 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 61 [2023-04-02 01:27:11,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:11,390 INFO L225 Difference]: With dead ends: 94 [2023-04-02 01:27:11,390 INFO L226 Difference]: Without dead ends: 65 [2023-04-02 01:27:11,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 121 SyntacticMatches, 14 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=259, Invalid=863, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 01:27:11,391 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 30 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:11,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 22 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:11,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-04-02 01:27:11,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-04-02 01:27:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 01:27:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2023-04-02 01:27:11,398 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 61 [2023-04-02 01:27:11,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:11,399 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2023-04-02 01:27:11,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 01:27:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2023-04-02 01:27:11,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 01:27:11,400 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:11,400 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:11,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:11,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-02 01:27:11,600 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:11,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:11,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1248681427, now seen corresponding path program 12 times [2023-04-02 01:27:11,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:11,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311039153] [2023-04-02 01:27:11,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:11,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:11,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:11,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 01:27:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:11,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 01:27:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:11,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 01:27:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:11,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 01:27:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:11,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 01:27:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:11,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 01:27:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-02 01:27:11,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:11,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311039153] [2023-04-02 01:27:11,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311039153] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:11,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372127139] [2023-04-02 01:27:11,771 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-04-02 01:27:11,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:11,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:11,772 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:11,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-02 01:27:11,821 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-04-02 01:27:11,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:11,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-02 01:27:11,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:11,888 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-02 01:27:11,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-02 01:27:11,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372127139] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:11,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:11,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 16 [2023-04-02 01:27:11,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653194782] [2023-04-02 01:27:11,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:11,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 01:27:11,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:11,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 01:27:11,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-04-02 01:27:11,998 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 8 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 01:27:12,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:12,194 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2023-04-02 01:27:12,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 01:27:12,194 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 8 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 62 [2023-04-02 01:27:12,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:12,195 INFO L225 Difference]: With dead ends: 78 [2023-04-02 01:27:12,195 INFO L226 Difference]: Without dead ends: 76 [2023-04-02 01:27:12,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 128 SyntacticMatches, 14 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2023-04-02 01:27:12,196 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 39 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:12,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 47 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:12,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-04-02 01:27:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2023-04-02 01:27:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 01:27:12,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2023-04-02 01:27:12,203 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 62 [2023-04-02 01:27:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:12,203 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2023-04-02 01:27:12,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 8 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 01:27:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2023-04-02 01:27:12,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 01:27:12,204 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:12,204 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:12,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:12,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-02 01:27:12,409 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:12,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:12,409 INFO L85 PathProgramCache]: Analyzing trace with hash 72960294, now seen corresponding path program 13 times [2023-04-02 01:27:12,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:12,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922342427] [2023-04-02 01:27:12,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:12,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:12,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 01:27:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:12,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 01:27:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:12,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 01:27:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:12,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 01:27:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:12,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 01:27:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:12,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 01:27:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:12,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 01:27:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-02 01:27:12,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:12,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922342427] [2023-04-02 01:27:12,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922342427] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:12,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547344811] [2023-04-02 01:27:12,647 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 01:27:12,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:12,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:12,648 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:12,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-02 01:27:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:12,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-02 01:27:12,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-02 01:27:12,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-02 01:27:12,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547344811] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:12,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:12,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 21 [2023-04-02 01:27:12,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158013406] [2023-04-02 01:27:12,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:12,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 01:27:12,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:12,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 01:27:12,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-04-02 01:27:12,930 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 20 states have internal predecessors, (36), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 01:27:13,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:13,237 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2023-04-02 01:27:13,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 01:27:13,237 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 20 states have internal predecessors, (36), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 69 [2023-04-02 01:27:13,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:13,238 INFO L225 Difference]: With dead ends: 105 [2023-04-02 01:27:13,238 INFO L226 Difference]: Without dead ends: 73 [2023-04-02 01:27:13,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 137 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=318, Invalid=1088, Unknown=0, NotChecked=0, Total=1406 [2023-04-02 01:27:13,240 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 31 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:13,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 37 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:13,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-04-02 01:27:13,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-04-02 01:27:13,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 01:27:13,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2023-04-02 01:27:13,248 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 69 [2023-04-02 01:27:13,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:13,248 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2023-04-02 01:27:13,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 20 states have internal predecessors, (36), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 01:27:13,248 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2023-04-02 01:27:13,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 01:27:13,249 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:13,249 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:13,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:13,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:13,454 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:13,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:13,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1918645900, now seen corresponding path program 14 times [2023-04-02 01:27:13,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:13,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199131575] [2023-04-02 01:27:13,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:13,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:13,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:13,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-02 01:27:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 01:27:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:13,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 01:27:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:13,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 01:27:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:13,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 01:27:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 01:27:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:13,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 01:27:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-02 01:27:13,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:13,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199131575] [2023-04-02 01:27:13,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199131575] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:13,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047848765] [2023-04-02 01:27:13,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:27:13,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:13,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:13,643 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:13,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-04-02 01:27:13,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:27:13,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:13,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 01:27:13,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-02 01:27:13,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-02 01:27:13,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047848765] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:13,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:13,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 17 [2023-04-02 01:27:13,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469734249] [2023-04-02 01:27:13,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:13,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 01:27:13,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:13,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 01:27:13,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-04-02 01:27:13,924 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 14 states have internal predecessors, (39), 9 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 01:27:14,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:14,132 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2023-04-02 01:27:14,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 01:27:14,132 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 14 states have internal predecessors, (39), 9 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 70 [2023-04-02 01:27:14,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:14,133 INFO L225 Difference]: With dead ends: 86 [2023-04-02 01:27:14,133 INFO L226 Difference]: Without dead ends: 84 [2023-04-02 01:27:14,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 145 SyntacticMatches, 16 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2023-04-02 01:27:14,134 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 43 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:14,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 42 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:14,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-04-02 01:27:14,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2023-04-02 01:27:14,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 01:27:14,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2023-04-02 01:27:14,144 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 70 [2023-04-02 01:27:14,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:14,145 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2023-04-02 01:27:14,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 14 states have internal predecessors, (39), 9 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 01:27:14,145 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2023-04-02 01:27:14,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-02 01:27:14,146 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:14,146 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:14,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:14,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-04-02 01:27:14,353 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:14,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:14,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1108288537, now seen corresponding path program 15 times [2023-04-02 01:27:14,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:14,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973487062] [2023-04-02 01:27:14,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:14,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:14,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-02 01:27:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:14,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 01:27:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:14,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 01:27:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:14,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 01:27:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:14,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 01:27:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:14,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 01:27:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:14,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 01:27:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:14,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 01:27:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-04-02 01:27:14,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:14,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973487062] [2023-04-02 01:27:14,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973487062] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:14,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024419131] [2023-04-02 01:27:14,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:27:14,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:14,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:14,614 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:14,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-04-02 01:27:14,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-04-02 01:27:14,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:14,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-02 01:27:14,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-04-02 01:27:14,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-04-02 01:27:14,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024419131] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:14,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:14,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 23 [2023-04-02 01:27:14,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407005530] [2023-04-02 01:27:14,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:14,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-02 01:27:14,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:14,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-02 01:27:14,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2023-04-02 01:27:14,947 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 23 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 22 states have internal predecessors, (39), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 01:27:15,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:15,284 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2023-04-02 01:27:15,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 01:27:15,285 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 22 states have internal predecessors, (39), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 77 [2023-04-02 01:27:15,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:15,285 INFO L225 Difference]: With dead ends: 116 [2023-04-02 01:27:15,285 INFO L226 Difference]: Without dead ends: 81 [2023-04-02 01:27:15,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 153 SyntacticMatches, 18 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2023-04-02 01:27:15,287 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 32 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:15,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 32 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:15,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-04-02 01:27:15,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-04-02 01:27:15,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 01:27:15,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2023-04-02 01:27:15,294 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 77 [2023-04-02 01:27:15,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:15,294 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2023-04-02 01:27:15,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 22 states have internal predecessors, (39), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 01:27:15,295 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2023-04-02 01:27:15,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-02 01:27:15,295 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:15,295 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:15,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-04-02 01:27:15,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-04-02 01:27:15,501 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:15,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:15,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2012939085, now seen corresponding path program 16 times [2023-04-02 01:27:15,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:15,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333720349] [2023-04-02 01:27:15,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:15,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:15,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:15,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 01:27:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:15,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 01:27:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:15,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 01:27:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:15,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 01:27:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:15,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 01:27:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:15,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 01:27:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:15,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 01:27:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:15,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 01:27:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-04-02 01:27:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:15,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333720349] [2023-04-02 01:27:15,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333720349] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:15,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958658308] [2023-04-02 01:27:15,738 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 01:27:15,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:15,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:15,740 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:15,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-04-02 01:27:15,798 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 01:27:15,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:15,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-02 01:27:15,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-04-02 01:27:15,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:16,036 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-04-02 01:27:16,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958658308] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:16,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:16,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 18 [2023-04-02 01:27:16,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737736986] [2023-04-02 01:27:16,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:16,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 01:27:16,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:16,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 01:27:16,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-04-02 01:27:16,038 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 15 states have internal predecessors, (42), 10 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 01:27:16,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:16,259 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2023-04-02 01:27:16,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 01:27:16,259 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 15 states have internal predecessors, (42), 10 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 78 [2023-04-02 01:27:16,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:16,260 INFO L225 Difference]: With dead ends: 94 [2023-04-02 01:27:16,260 INFO L226 Difference]: Without dead ends: 92 [2023-04-02 01:27:16,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 162 SyntacticMatches, 18 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2023-04-02 01:27:16,262 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 45 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:16,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 32 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:16,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-04-02 01:27:16,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2023-04-02 01:27:16,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 01:27:16,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2023-04-02 01:27:16,274 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 78 [2023-04-02 01:27:16,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:16,274 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2023-04-02 01:27:16,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 15 states have internal predecessors, (42), 10 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 01:27:16,274 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2023-04-02 01:27:16,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-02 01:27:16,275 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:16,275 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:16,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:16,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-02 01:27:16,476 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:16,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:16,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1961401338, now seen corresponding path program 17 times [2023-04-02 01:27:16,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:16,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779201767] [2023-04-02 01:27:16,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:16,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:16,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:16,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 01:27:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:16,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 01:27:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:16,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 01:27:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:16,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 01:27:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:16,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 01:27:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:16,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 01:27:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:16,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 01:27:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:16,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 01:27:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:16,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 01:27:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-04-02 01:27:16,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:16,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779201767] [2023-04-02 01:27:16,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779201767] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:16,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177335871] [2023-04-02 01:27:16,732 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-02 01:27:16,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:16,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:16,733 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:16,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-04-02 01:27:16,808 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-04-02 01:27:16,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:16,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 01:27:16,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-04-02 01:27:16,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:17,066 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-04-02 01:27:17,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177335871] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:17,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:17,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 25 [2023-04-02 01:27:17,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435994883] [2023-04-02 01:27:17,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:17,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-02 01:27:17,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:17,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-02 01:27:17,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2023-04-02 01:27:17,068 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 01:27:17,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:17,455 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2023-04-02 01:27:17,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 01:27:17,456 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 85 [2023-04-02 01:27:17,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:17,457 INFO L225 Difference]: With dead ends: 127 [2023-04-02 01:27:17,457 INFO L226 Difference]: Without dead ends: 89 [2023-04-02 01:27:17,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 169 SyntacticMatches, 20 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=454, Invalid=1616, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 01:27:17,458 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:17,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 42 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:27:17,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-04-02 01:27:17,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-04-02 01:27:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 66 states have internal predecessors, (67), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 01:27:17,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2023-04-02 01:27:17,495 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 85 [2023-04-02 01:27:17,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:17,495 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2023-04-02 01:27:17,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 01:27:17,496 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2023-04-02 01:27:17,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-02 01:27:17,496 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:17,499 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:17,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:17,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:17,704 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:17,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:17,705 INFO L85 PathProgramCache]: Analyzing trace with hash 458147180, now seen corresponding path program 18 times [2023-04-02 01:27:17,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:17,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950573430] [2023-04-02 01:27:17,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:17,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:17,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:17,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 01:27:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:17,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 01:27:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:17,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-04-02 01:27:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:17,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 01:27:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:17,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 01:27:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:17,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 01:27:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:17,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 01:27:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:17,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 01:27:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 01:27:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-04-02 01:27:17,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:17,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950573430] [2023-04-02 01:27:17,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950573430] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:17,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309563029] [2023-04-02 01:27:17,942 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-04-02 01:27:17,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:17,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:17,944 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:17,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-04-02 01:27:18,012 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-04-02 01:27:18,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:18,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 26 conjunts are in the unsatisfiable core [2023-04-02 01:27:18,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-04-02 01:27:18,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-04-02 01:27:18,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309563029] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:18,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:18,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 19 [2023-04-02 01:27:18,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376582905] [2023-04-02 01:27:18,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:18,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 01:27:18,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:18,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 01:27:18,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-04-02 01:27:18,262 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 16 states have internal predecessors, (45), 11 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 01:27:18,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:18,486 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2023-04-02 01:27:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 01:27:18,486 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 16 states have internal predecessors, (45), 11 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 86 [2023-04-02 01:27:18,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:18,487 INFO L225 Difference]: With dead ends: 102 [2023-04-02 01:27:18,487 INFO L226 Difference]: Without dead ends: 100 [2023-04-02 01:27:18,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 179 SyntacticMatches, 20 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 01:27:18,488 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 45 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:18,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 42 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:18,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-04-02 01:27:18,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2023-04-02 01:27:18,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 01:27:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2023-04-02 01:27:18,496 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 86 [2023-04-02 01:27:18,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:18,497 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2023-04-02 01:27:18,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 16 states have internal predecessors, (45), 11 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 01:27:18,497 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2023-04-02 01:27:18,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-02 01:27:18,498 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:18,498 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:18,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:18,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:18,701 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:18,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:18,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1286197511, now seen corresponding path program 19 times [2023-04-02 01:27:18,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:18,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573111458] [2023-04-02 01:27:18,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:18,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:19,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:19,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 01:27:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:19,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 01:27:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:19,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-04-02 01:27:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:19,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 01:27:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:19,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 01:27:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:19,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 01:27:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:19,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 01:27:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:19,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 01:27:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:19,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 01:27:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:19,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 01:27:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-04-02 01:27:19,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:19,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573111458] [2023-04-02 01:27:19,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573111458] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:19,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698541109] [2023-04-02 01:27:19,034 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 01:27:19,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:19,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:19,037 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:19,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-04-02 01:27:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:19,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-02 01:27:19,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-04-02 01:27:19,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-04-02 01:27:19,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698541109] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:19,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:19,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 27 [2023-04-02 01:27:19,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074109691] [2023-04-02 01:27:19,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:19,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-04-02 01:27:19,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:19,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-04-02 01:27:19,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2023-04-02 01:27:19,373 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 26 states have internal predecessors, (45), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 01:27:19,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:19,776 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2023-04-02 01:27:19,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 01:27:19,776 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 26 states have internal predecessors, (45), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 93 [2023-04-02 01:27:19,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:19,777 INFO L225 Difference]: With dead ends: 138 [2023-04-02 01:27:19,777 INFO L226 Difference]: Without dead ends: 97 [2023-04-02 01:27:19,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 185 SyntacticMatches, 22 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=531, Invalid=1919, Unknown=0, NotChecked=0, Total=2450 [2023-04-02 01:27:19,778 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 34 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:19,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 37 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:19,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-04-02 01:27:19,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-04-02 01:27:19,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 71 states have (on average 1.028169014084507) internal successors, (73), 72 states have internal predecessors, (73), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 01:27:19,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2023-04-02 01:27:19,791 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 93 [2023-04-02 01:27:19,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:19,791 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2023-04-02 01:27:19,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 26 states have internal predecessors, (45), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 01:27:19,791 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2023-04-02 01:27:19,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-02 01:27:19,792 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:19,792 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:19,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:20,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-04-02 01:27:20,009 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:20,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:20,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1221301139, now seen corresponding path program 20 times [2023-04-02 01:27:20,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:20,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499986441] [2023-04-02 01:27:20,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:20,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:20,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:20,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:27:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:20,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-02 01:27:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:20,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 01:27:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:20,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 01:27:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:20,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 01:27:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:20,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 01:27:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:20,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 01:27:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:20,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 01:27:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:20,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 01:27:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:20,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 01:27:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-04-02 01:27:20,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:20,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499986441] [2023-04-02 01:27:20,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499986441] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:20,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212521546] [2023-04-02 01:27:20,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:27:20,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:20,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:20,245 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:20,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-04-02 01:27:20,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:27:20,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:20,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 28 conjunts are in the unsatisfiable core [2023-04-02 01:27:20,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-04-02 01:27:20,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-04-02 01:27:20,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212521546] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:20,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:20,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 20 [2023-04-02 01:27:20,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930662189] [2023-04-02 01:27:20,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:20,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-02 01:27:20,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:20,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-02 01:27:20,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2023-04-02 01:27:20,579 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 12 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 01:27:20,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:20,804 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2023-04-02 01:27:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-02 01:27:20,804 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 12 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 94 [2023-04-02 01:27:20,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:20,805 INFO L225 Difference]: With dead ends: 110 [2023-04-02 01:27:20,805 INFO L226 Difference]: Without dead ends: 108 [2023-04-02 01:27:20,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 196 SyntacticMatches, 22 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=310, Invalid=950, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 01:27:20,806 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 50 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:20,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 42 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:20,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-04-02 01:27:20,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2023-04-02 01:27:20,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 01:27:20,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2023-04-02 01:27:20,816 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 94 [2023-04-02 01:27:20,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:20,816 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2023-04-02 01:27:20,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 12 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 01:27:20,816 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2023-04-02 01:27:20,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 01:27:20,817 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:20,817 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:20,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:21,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-04-02 01:27:21,023 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:21,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:21,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1052018970, now seen corresponding path program 21 times [2023-04-02 01:27:21,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:21,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057829191] [2023-04-02 01:27:21,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:21,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:21,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:21,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:27:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-02 01:27:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:21,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 01:27:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:21,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 01:27:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:21,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 01:27:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:21,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 01:27:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:21,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 01:27:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:21,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 01:27:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:21,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 01:27:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:21,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 01:27:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:21,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 01:27:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-02 01:27:21,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:21,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057829191] [2023-04-02 01:27:21,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057829191] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:21,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328062945] [2023-04-02 01:27:21,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:27:21,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:21,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:21,380 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:21,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-04-02 01:27:21,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-04-02 01:27:21,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:21,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2023-04-02 01:27:21,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-02 01:27:21,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-02 01:27:21,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328062945] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:21,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:21,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 29 [2023-04-02 01:27:21,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511640397] [2023-04-02 01:27:21,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:21,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-04-02 01:27:21,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:21,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-04-02 01:27:21,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2023-04-02 01:27:21,792 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 28 states have internal predecessors, (48), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 01:27:22,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:22,253 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2023-04-02 01:27:22,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 01:27:22,254 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 28 states have internal predecessors, (48), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 101 [2023-04-02 01:27:22,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:22,254 INFO L225 Difference]: With dead ends: 149 [2023-04-02 01:27:22,254 INFO L226 Difference]: Without dead ends: 105 [2023-04-02 01:27:22,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 201 SyntacticMatches, 24 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=614, Invalid=2248, Unknown=0, NotChecked=0, Total=2862 [2023-04-02 01:27:22,256 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 35 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:22,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 42 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:27:22,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-04-02 01:27:22,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-04-02 01:27:22,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.025974025974026) internal successors, (79), 78 states have internal predecessors, (79), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 01:27:22,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2023-04-02 01:27:22,266 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 101 [2023-04-02 01:27:22,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:22,267 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2023-04-02 01:27:22,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 28 states have internal predecessors, (48), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 01:27:22,267 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2023-04-02 01:27:22,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-02 01:27:22,267 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:22,268 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:22,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-04-02 01:27:22,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:22,473 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:22,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:22,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2075177908, now seen corresponding path program 22 times [2023-04-02 01:27:22,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:22,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778876574] [2023-04-02 01:27:22,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:22,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:22,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:22,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 01:27:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:22,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 01:27:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:22,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 01:27:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:22,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-02 01:27:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:22,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 01:27:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 01:27:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:22,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 01:27:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:22,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 01:27:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:22,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 01:27:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:22,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 01:27:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:22,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 01:27:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-02 01:27:22,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:22,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778876574] [2023-04-02 01:27:22,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778876574] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:22,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112614457] [2023-04-02 01:27:22,748 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 01:27:22,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:22,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:22,749 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:22,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-04-02 01:27:22,809 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 01:27:22,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:22,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 30 conjunts are in the unsatisfiable core [2023-04-02 01:27:22,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-02 01:27:22,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-04-02 01:27:23,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112614457] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:23,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:23,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 21 [2023-04-02 01:27:23,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490771738] [2023-04-02 01:27:23,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:23,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 01:27:23,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:23,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 01:27:23,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-04-02 01:27:23,091 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 18 states have internal predecessors, (51), 13 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 01:27:23,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:23,363 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2023-04-02 01:27:23,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 01:27:23,364 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 18 states have internal predecessors, (51), 13 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 102 [2023-04-02 01:27:23,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:23,364 INFO L225 Difference]: With dead ends: 118 [2023-04-02 01:27:23,365 INFO L226 Difference]: Without dead ends: 116 [2023-04-02 01:27:23,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 213 SyntacticMatches, 24 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2023-04-02 01:27:23,366 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 52 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:23,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 42 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:23,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-04-02 01:27:23,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2023-04-02 01:27:23,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 01:27:23,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2023-04-02 01:27:23,375 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 102 [2023-04-02 01:27:23,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:23,376 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2023-04-02 01:27:23,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 18 states have internal predecessors, (51), 13 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 01:27:23,376 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2023-04-02 01:27:23,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-02 01:27:23,376 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:23,377 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:23,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:23,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:23,582 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:23,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:23,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2043818457, now seen corresponding path program 23 times [2023-04-02 01:27:23,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:23,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941542433] [2023-04-02 01:27:23,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:23,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:23,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:23,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 01:27:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:23,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 01:27:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:23,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 01:27:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:23,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-02 01:27:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:23,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 01:27:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:23,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 01:27:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:23,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 01:27:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:23,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 01:27:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:23,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 01:27:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:23,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 01:27:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:23,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 01:27:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:23,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 01:27:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-04-02 01:27:23,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:23,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941542433] [2023-04-02 01:27:23,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941542433] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:23,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819354899] [2023-04-02 01:27:23,977 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-02 01:27:23,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:23,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:23,978 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:23,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-04-02 01:27:24,035 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-04-02 01:27:24,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:24,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 28 conjunts are in the unsatisfiable core [2023-04-02 01:27:24,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-04-02 01:27:24,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-04-02 01:27:24,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819354899] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:24,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:24,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 31 [2023-04-02 01:27:24,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465171121] [2023-04-02 01:27:24,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:24,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-04-02 01:27:24,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:24,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-04-02 01:27:24,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2023-04-02 01:27:24,406 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 31 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 30 states have internal predecessors, (51), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 01:27:24,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:24,980 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2023-04-02 01:27:24,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-02 01:27:24,980 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 30 states have internal predecessors, (51), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 109 [2023-04-02 01:27:24,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:24,981 INFO L225 Difference]: With dead ends: 160 [2023-04-02 01:27:24,981 INFO L226 Difference]: Without dead ends: 113 [2023-04-02 01:27:24,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 217 SyntacticMatches, 26 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=703, Invalid=2603, Unknown=0, NotChecked=0, Total=3306 [2023-04-02 01:27:24,982 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 36 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:24,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 72 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:27:24,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-04-02 01:27:24,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-04-02 01:27:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 84 states have internal predecessors, (85), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 01:27:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2023-04-02 01:27:24,992 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 109 [2023-04-02 01:27:24,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:24,992 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2023-04-02 01:27:24,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 30 states have internal predecessors, (51), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 01:27:24,992 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2023-04-02 01:27:24,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-02 01:27:24,993 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:24,993 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:24,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-04-02 01:27:25,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-04-02 01:27:25,194 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:25,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:25,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1714365043, now seen corresponding path program 24 times [2023-04-02 01:27:25,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:25,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866708643] [2023-04-02 01:27:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:25,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:25,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:25,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 01:27:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:25,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-02 01:27:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:25,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 01:27:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 01:27:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:25,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 01:27:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:25,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 01:27:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:25,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 01:27:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:25,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 01:27:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:25,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 01:27:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:25,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 01:27:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:25,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 01:27:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:25,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 01:27:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-04-02 01:27:25,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:25,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866708643] [2023-04-02 01:27:25,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866708643] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:25,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457280765] [2023-04-02 01:27:25,497 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-04-02 01:27:25,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:25,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:25,498 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:25,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-04-02 01:27:25,566 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-04-02 01:27:25,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:25,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 32 conjunts are in the unsatisfiable core [2023-04-02 01:27:25,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-04-02 01:27:25,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:25,907 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-04-02 01:27:25,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457280765] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:25,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:25,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 22 [2023-04-02 01:27:25,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168935022] [2023-04-02 01:27:25,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:25,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 01:27:25,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:25,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 01:27:25,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2023-04-02 01:27:25,909 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 19 states have internal predecessors, (54), 14 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 01:27:26,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:26,185 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2023-04-02 01:27:26,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 01:27:26,185 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 19 states have internal predecessors, (54), 14 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 110 [2023-04-02 01:27:26,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:26,186 INFO L225 Difference]: With dead ends: 126 [2023-04-02 01:27:26,186 INFO L226 Difference]: Without dead ends: 124 [2023-04-02 01:27:26,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 230 SyntacticMatches, 26 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1163, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 01:27:26,187 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 54 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:26,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 42 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:26,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-04-02 01:27:26,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2023-04-02 01:27:26,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-04-02 01:27:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2023-04-02 01:27:26,198 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 110 [2023-04-02 01:27:26,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:26,199 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2023-04-02 01:27:26,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 19 states have internal predecessors, (54), 14 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 01:27:26,199 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2023-04-02 01:27:26,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-02 01:27:26,199 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:26,200 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:26,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:26,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-04-02 01:27:26,405 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:26,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:26,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1478721990, now seen corresponding path program 25 times [2023-04-02 01:27:26,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:26,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504359396] [2023-04-02 01:27:26,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:26,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:26,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:26,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 01:27:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:26,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-02 01:27:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:26,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 01:27:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:26,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 01:27:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:26,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 01:27:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:26,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 01:27:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:26,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 01:27:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:26,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 01:27:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:26,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 01:27:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:26,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 01:27:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:26,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 01:27:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:26,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 01:27:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:26,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 01:27:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-04-02 01:27:26,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:26,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504359396] [2023-04-02 01:27:26,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504359396] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:26,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216469202] [2023-04-02 01:27:26,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 01:27:26,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:26,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:26,861 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:26,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-04-02 01:27:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:26,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 30 conjunts are in the unsatisfiable core [2023-04-02 01:27:26,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-04-02 01:27:27,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:27,302 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-04-02 01:27:27,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216469202] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:27,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:27,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 33 [2023-04-02 01:27:27,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225209361] [2023-04-02 01:27:27,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:27,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-04-02 01:27:27,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:27,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-04-02 01:27:27,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 01:27:27,304 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 01:27:27,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:27,816 INFO L93 Difference]: Finished difference Result 171 states and 186 transitions. [2023-04-02 01:27:27,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-02 01:27:27,817 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 117 [2023-04-02 01:27:27,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:27,818 INFO L225 Difference]: With dead ends: 171 [2023-04-02 01:27:27,818 INFO L226 Difference]: Without dead ends: 121 [2023-04-02 01:27:27,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 233 SyntacticMatches, 28 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=798, Invalid=2984, Unknown=0, NotChecked=0, Total=3782 [2023-04-02 01:27:27,819 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 37 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:27,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 52 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:27:27,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-04-02 01:27:27,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-04-02 01:27:27,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 90 states have internal predecessors, (91), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-04-02 01:27:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2023-04-02 01:27:27,831 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 117 [2023-04-02 01:27:27,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:27,831 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2023-04-02 01:27:27,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 01:27:27,832 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2023-04-02 01:27:27,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-04-02 01:27:27,832 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:27,833 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:27,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:28,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-04-02 01:27:28,038 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:28,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:28,038 INFO L85 PathProgramCache]: Analyzing trace with hash 780913452, now seen corresponding path program 26 times [2023-04-02 01:27:28,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:28,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623487462] [2023-04-02 01:27:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:28,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:28,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:28,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 01:27:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:28,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 01:27:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:28,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 01:27:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:28,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 01:27:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:28,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 01:27:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:28,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 01:27:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:28,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 01:27:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:28,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 01:27:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:28,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 01:27:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:28,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 01:27:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:28,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-04-02 01:27:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:28,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 01:27:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:28,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 01:27:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:28,404 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-04-02 01:27:28,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:28,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623487462] [2023-04-02 01:27:28,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623487462] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:28,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638319992] [2023-04-02 01:27:28,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:27:28,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:28,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:28,405 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:28,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-04-02 01:27:28,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:27:28,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:28,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 34 conjunts are in the unsatisfiable core [2023-04-02 01:27:28,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:28,571 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-04-02 01:27:28,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-04-02 01:27:28,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638319992] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:28,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:28,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 23 [2023-04-02 01:27:28,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281458408] [2023-04-02 01:27:28,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:28,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-02 01:27:28,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:28,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-02 01:27:28,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2023-04-02 01:27:28,842 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 20 states have internal predecessors, (57), 15 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 01:27:29,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:29,132 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2023-04-02 01:27:29,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 01:27:29,133 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 20 states have internal predecessors, (57), 15 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 118 [2023-04-02 01:27:29,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:29,135 INFO L225 Difference]: With dead ends: 134 [2023-04-02 01:27:29,135 INFO L226 Difference]: Without dead ends: 132 [2023-04-02 01:27:29,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 247 SyntacticMatches, 28 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=445, Invalid=1277, Unknown=0, NotChecked=0, Total=1722 [2023-04-02 01:27:29,136 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 58 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:29,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 47 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:29,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-04-02 01:27:29,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2023-04-02 01:27:29,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 95 states have internal predecessors, (96), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-02 01:27:29,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2023-04-02 01:27:29,152 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 118 [2023-04-02 01:27:29,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:29,153 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2023-04-02 01:27:29,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 20 states have internal predecessors, (57), 15 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 01:27:29,153 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2023-04-02 01:27:29,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-04-02 01:27:29,154 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:29,154 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:29,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:29,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-04-02 01:27:29,359 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:29,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:29,359 INFO L85 PathProgramCache]: Analyzing trace with hash -644951225, now seen corresponding path program 27 times [2023-04-02 01:27:29,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:29,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044864374] [2023-04-02 01:27:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:29,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:29,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:29,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 01:27:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:29,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 01:27:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:29,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 01:27:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:29,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 01:27:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:29,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 01:27:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:29,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 01:27:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:29,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 01:27:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:29,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 01:27:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:29,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 01:27:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:29,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 01:27:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:29,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-04-02 01:27:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:29,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 01:27:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:29,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 01:27:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:29,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 01:27:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-04-02 01:27:29,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:29,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044864374] [2023-04-02 01:27:29,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044864374] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:29,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181687547] [2023-04-02 01:27:29,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:27:29,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:29,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:29,817 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:29,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-04-02 01:27:29,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-04-02 01:27:29,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:29,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 32 conjunts are in the unsatisfiable core [2023-04-02 01:27:29,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:29,978 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-04-02 01:27:29,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-04-02 01:27:30,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181687547] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:30,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:30,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 35 [2023-04-02 01:27:30,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983327677] [2023-04-02 01:27:30,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:30,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-04-02 01:27:30,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:30,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-04-02 01:27:30,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 01:27:30,324 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 34 states have internal predecessors, (57), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-04-02 01:27:30,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:30,929 INFO L93 Difference]: Finished difference Result 182 states and 198 transitions. [2023-04-02 01:27:30,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-02 01:27:30,929 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 34 states have internal predecessors, (57), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 125 [2023-04-02 01:27:30,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:30,930 INFO L225 Difference]: With dead ends: 182 [2023-04-02 01:27:30,930 INFO L226 Difference]: Without dead ends: 129 [2023-04-02 01:27:30,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 249 SyntacticMatches, 30 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=899, Invalid=3391, Unknown=0, NotChecked=0, Total=4290 [2023-04-02 01:27:30,932 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 38 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:30,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 42 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:27:30,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-04-02 01:27:30,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-04-02 01:27:30,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 96 states have internal predecessors, (97), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-02 01:27:30,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2023-04-02 01:27:30,946 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 125 [2023-04-02 01:27:30,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:30,946 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2023-04-02 01:27:30,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 34 states have internal predecessors, (57), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-04-02 01:27:30,947 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2023-04-02 01:27:30,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-02 01:27:30,947 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:30,947 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:30,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:31,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-04-02 01:27:31,153 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:31,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:31,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1591891629, now seen corresponding path program 28 times [2023-04-02 01:27:31,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:31,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514848699] [2023-04-02 01:27:31,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:31,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:31,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:31,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 01:27:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:31,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 01:27:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:31,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 01:27:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:31,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 01:27:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:31,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 01:27:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:31,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 01:27:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 01:27:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:31,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 01:27:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:31,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 01:27:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:31,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 01:27:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:31,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 01:27:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:31,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 01:27:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:31,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 01:27:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:31,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 01:27:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:31,498 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-04-02 01:27:31,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:31,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514848699] [2023-04-02 01:27:31,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514848699] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:31,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676970168] [2023-04-02 01:27:31,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 01:27:31,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:31,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:31,500 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:31,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-04-02 01:27:31,569 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 01:27:31,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:31,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 36 conjunts are in the unsatisfiable core [2023-04-02 01:27:31,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:31,685 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-04-02 01:27:31,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-04-02 01:27:31,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676970168] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:31,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:31,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 24 [2023-04-02 01:27:31,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149246019] [2023-04-02 01:27:31,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:31,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-02 01:27:31,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:31,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-02 01:27:31,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2023-04-02 01:27:31,969 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand has 24 states, 24 states have (on average 2.5) internal successors, (60), 21 states have internal predecessors, (60), 16 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-04-02 01:27:32,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:32,242 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2023-04-02 01:27:32,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 01:27:32,242 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5) internal successors, (60), 21 states have internal predecessors, (60), 16 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 126 [2023-04-02 01:27:32,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:32,243 INFO L225 Difference]: With dead ends: 142 [2023-04-02 01:27:32,243 INFO L226 Difference]: Without dead ends: 140 [2023-04-02 01:27:32,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 264 SyntacticMatches, 30 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=1396, Unknown=0, NotChecked=0, Total=1892 [2023-04-02 01:27:32,245 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 60 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:32,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 27 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:32,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-04-02 01:27:32,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2023-04-02 01:27:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 01:27:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2023-04-02 01:27:32,258 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 126 [2023-04-02 01:27:32,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:32,258 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2023-04-02 01:27:32,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5) internal successors, (60), 21 states have internal predecessors, (60), 16 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-04-02 01:27:32,259 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2023-04-02 01:27:32,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-02 01:27:32,259 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:32,260 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:32,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:32,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:32,465 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:32,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:32,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1481475238, now seen corresponding path program 29 times [2023-04-02 01:27:32,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:32,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747929976] [2023-04-02 01:27:32,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:32,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:32,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:32,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-04-02 01:27:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:32,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 01:27:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:32,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 01:27:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:32,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 01:27:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:32,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 01:27:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:32,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 01:27:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:32,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 01:27:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:32,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 01:27:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:32,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 01:27:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:32,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 01:27:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:32,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 01:27:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:32,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 01:27:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:32,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 01:27:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:32,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 01:27:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:33,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 01:27:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-04-02 01:27:33,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:33,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747929976] [2023-04-02 01:27:33,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747929976] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:33,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380975652] [2023-04-02 01:27:33,007 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-02 01:27:33,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:33,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:33,008 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:33,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-04-02 01:27:33,089 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-04-02 01:27:33,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:33,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 34 conjunts are in the unsatisfiable core [2023-04-02 01:27:33,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-04-02 01:27:33,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-04-02 01:27:33,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380975652] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:33,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:33,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 37 [2023-04-02 01:27:33,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418530360] [2023-04-02 01:27:33,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:33,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-04-02 01:27:33,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:33,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-04-02 01:27:33,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 01:27:33,552 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 36 states have internal predecessors, (60), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-02 01:27:34,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:34,156 INFO L93 Difference]: Finished difference Result 193 states and 210 transitions. [2023-04-02 01:27:34,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-04-02 01:27:34,157 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 36 states have internal predecessors, (60), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 133 [2023-04-02 01:27:34,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:34,158 INFO L225 Difference]: With dead ends: 193 [2023-04-02 01:27:34,158 INFO L226 Difference]: Without dead ends: 137 [2023-04-02 01:27:34,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 265 SyntacticMatches, 32 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1663 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1006, Invalid=3824, Unknown=0, NotChecked=0, Total=4830 [2023-04-02 01:27:34,159 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 39 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:34,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 37 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:27:34,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-04-02 01:27:34,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-04-02 01:27:34,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 102 states have internal predecessors, (103), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 01:27:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2023-04-02 01:27:34,173 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 133 [2023-04-02 01:27:34,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:34,173 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2023-04-02 01:27:34,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 36 states have internal predecessors, (60), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-02 01:27:34,174 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2023-04-02 01:27:34,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 01:27:34,174 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:34,175 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:34,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-04-02 01:27:34,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-04-02 01:27:34,377 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:34,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:34,377 INFO L85 PathProgramCache]: Analyzing trace with hash -223198708, now seen corresponding path program 30 times [2023-04-02 01:27:34,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:34,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851395590] [2023-04-02 01:27:34,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:34,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 01:27:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 01:27:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 01:27:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 01:27:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 01:27:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 01:27:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 01:27:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 01:27:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 01:27:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 01:27:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 01:27:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 01:27:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 01:27:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 01:27:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 01:27:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 150 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-04-02 01:27:34,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:34,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851395590] [2023-04-02 01:27:34,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851395590] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:34,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369983427] [2023-04-02 01:27:34,746 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-04-02 01:27:34,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:34,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:34,749 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:34,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-04-02 01:27:34,844 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2023-04-02 01:27:34,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:34,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 38 conjunts are in the unsatisfiable core [2023-04-02 01:27:34,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-04-02 01:27:34,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:35,249 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-04-02 01:27:35,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369983427] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:35,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:35,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 25 [2023-04-02 01:27:35,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505205056] [2023-04-02 01:27:35,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:35,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-02 01:27:35,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:35,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-02 01:27:35,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2023-04-02 01:27:35,251 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 22 states have internal predecessors, (63), 17 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-02 01:27:35,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:35,549 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2023-04-02 01:27:35,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 01:27:35,549 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 22 states have internal predecessors, (63), 17 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 134 [2023-04-02 01:27:35,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:35,550 INFO L225 Difference]: With dead ends: 150 [2023-04-02 01:27:35,550 INFO L226 Difference]: Without dead ends: 148 [2023-04-02 01:27:35,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 281 SyntacticMatches, 32 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=550, Invalid=1520, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 01:27:35,551 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 60 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:35,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 57 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:35,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-04-02 01:27:35,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2023-04-02 01:27:35,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 107 states have internal predecessors, (108), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-04-02 01:27:35,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2023-04-02 01:27:35,565 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 134 [2023-04-02 01:27:35,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:35,565 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2023-04-02 01:27:35,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 22 states have internal predecessors, (63), 17 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-02 01:27:35,566 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2023-04-02 01:27:35,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-04-02 01:27:35,566 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:35,567 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:35,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:35,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:35,773 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:35,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:35,773 INFO L85 PathProgramCache]: Analyzing trace with hash -295772057, now seen corresponding path program 31 times [2023-04-02 01:27:35,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:35,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42976265] [2023-04-02 01:27:35,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:35,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 01:27:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 01:27:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 01:27:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 01:27:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 01:27:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 01:27:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 01:27:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 01:27:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 01:27:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 01:27:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 01:27:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 01:27:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 01:27:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 01:27:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 01:27:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 01:27:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-04-02 01:27:36,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42976265] [2023-04-02 01:27:36,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42976265] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871328979] [2023-04-02 01:27:36,368 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 01:27:36,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:36,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:36,371 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:36,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-04-02 01:27:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:36,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 36 conjunts are in the unsatisfiable core [2023-04-02 01:27:36,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-04-02 01:27:36,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-04-02 01:27:36,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871328979] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:36,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:36,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 39 [2023-04-02 01:27:36,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745855185] [2023-04-02 01:27:36,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:36,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-04-02 01:27:36,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:36,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-04-02 01:27:36,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=1118, Unknown=0, NotChecked=0, Total=1482 [2023-04-02 01:27:36,950 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 39 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 38 states have internal predecessors, (63), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 01:27:37,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:37,736 INFO L93 Difference]: Finished difference Result 204 states and 222 transitions. [2023-04-02 01:27:37,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-02 01:27:37,737 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 38 states have internal predecessors, (63), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 141 [2023-04-02 01:27:37,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:37,737 INFO L225 Difference]: With dead ends: 204 [2023-04-02 01:27:37,737 INFO L226 Difference]: Without dead ends: 145 [2023-04-02 01:27:37,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 281 SyntacticMatches, 34 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1119, Invalid=4283, Unknown=0, NotChecked=0, Total=5402 [2023-04-02 01:27:37,739 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 40 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:37,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 72 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:27:37,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-04-02 01:27:37,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-04-02 01:27:37,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 108 states have internal predecessors, (109), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-04-02 01:27:37,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2023-04-02 01:27:37,756 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 141 [2023-04-02 01:27:37,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:37,756 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2023-04-02 01:27:37,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 38 states have internal predecessors, (63), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 01:27:37,756 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2023-04-02 01:27:37,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-04-02 01:27:37,757 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:37,758 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:37,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:37,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:37,964 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:37,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:37,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2113591245, now seen corresponding path program 32 times [2023-04-02 01:27:37,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:37,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830272469] [2023-04-02 01:27:37,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:37,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 01:27:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-04-02 01:27:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 01:27:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 01:27:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 01:27:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 01:27:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 01:27:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 01:27:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 01:27:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 01:27:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-04-02 01:27:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 01:27:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 01:27:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 01:27:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 01:27:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 01:27:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 168 proven. 409 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-04-02 01:27:38,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:38,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830272469] [2023-04-02 01:27:38,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830272469] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:38,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917675475] [2023-04-02 01:27:38,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:27:38,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:38,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:38,388 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:38,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-04-02 01:27:38,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:27:38,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:38,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 40 conjunts are in the unsatisfiable core [2023-04-02 01:27:38,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-04-02 01:27:38,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-04-02 01:27:38,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917675475] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:38,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:38,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 26 [2023-04-02 01:27:38,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486958201] [2023-04-02 01:27:38,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:38,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-04-02 01:27:38,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:38,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-04-02 01:27:38,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2023-04-02 01:27:38,923 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 23 states have internal predecessors, (66), 18 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 01:27:39,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:39,247 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2023-04-02 01:27:39,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-02 01:27:39,248 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 23 states have internal predecessors, (66), 18 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 142 [2023-04-02 01:27:39,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:39,249 INFO L225 Difference]: With dead ends: 158 [2023-04-02 01:27:39,249 INFO L226 Difference]: Without dead ends: 156 [2023-04-02 01:27:39,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 298 SyntacticMatches, 34 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=607, Invalid=1649, Unknown=0, NotChecked=0, Total=2256 [2023-04-02 01:27:39,250 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 59 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:39,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 52 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:27:39,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-04-02 01:27:39,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2023-04-02 01:27:39,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 113 states have internal predecessors, (114), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-02 01:27:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2023-04-02 01:27:39,266 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 142 [2023-04-02 01:27:39,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:39,266 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2023-04-02 01:27:39,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 23 states have internal predecessors, (66), 18 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 01:27:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2023-04-02 01:27:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-04-02 01:27:39,267 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:39,267 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:39,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-04-02 01:27:39,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-04-02 01:27:39,473 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:39,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:39,473 INFO L85 PathProgramCache]: Analyzing trace with hash 32997254, now seen corresponding path program 33 times [2023-04-02 01:27:39,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:39,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404123367] [2023-04-02 01:27:39,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:39,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 01:27:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-04-02 01:27:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 01:27:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 01:27:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 01:27:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 01:27:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 01:27:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 01:27:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 01:27:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 01:27:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-04-02 01:27:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 01:27:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 01:27:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 01:27:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 01:27:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 01:27:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 01:27:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:40,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-04-02 01:27:40,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:40,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404123367] [2023-04-02 01:27:40,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404123367] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:40,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141488003] [2023-04-02 01:27:40,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:27:40,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:40,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:40,149 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:40,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-04-02 01:27:40,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2023-04-02 01:27:40,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:40,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 38 conjunts are in the unsatisfiable core [2023-04-02 01:27:40,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-04-02 01:27:40,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-04-02 01:27:40,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141488003] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:40,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:40,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 41 [2023-04-02 01:27:40,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662118782] [2023-04-02 01:27:40,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:40,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-04-02 01:27:40,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:40,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-04-02 01:27:40,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2023-04-02 01:27:40,753 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 states have internal predecessors, (66), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-04-02 01:27:41,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:41,568 INFO L93 Difference]: Finished difference Result 215 states and 234 transitions. [2023-04-02 01:27:41,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-04-02 01:27:41,569 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 states have internal predecessors, (66), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 149 [2023-04-02 01:27:41,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:41,569 INFO L225 Difference]: With dead ends: 215 [2023-04-02 01:27:41,569 INFO L226 Difference]: Without dead ends: 153 [2023-04-02 01:27:41,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 297 SyntacticMatches, 36 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2089 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1238, Invalid=4768, Unknown=0, NotChecked=0, Total=6006 [2023-04-02 01:27:41,573 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 41 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:41,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 52 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:27:41,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-04-02 01:27:41,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2023-04-02 01:27:41,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 114 states have internal predecessors, (115), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-02 01:27:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2023-04-02 01:27:41,590 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 149 [2023-04-02 01:27:41,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:41,590 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2023-04-02 01:27:41,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 states have internal predecessors, (66), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-04-02 01:27:41,591 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2023-04-02 01:27:41,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-02 01:27:41,592 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:41,592 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:41,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:41,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-04-02 01:27:41,797 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:41,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:41,798 INFO L85 PathProgramCache]: Analyzing trace with hash -521096980, now seen corresponding path program 34 times [2023-04-02 01:27:41,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:41,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984949781] [2023-04-02 01:27:41,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:41,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-02 01:27:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 01:27:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 01:27:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 01:27:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 01:27:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 01:27:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 01:27:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 01:27:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 01:27:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 01:27:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 01:27:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 01:27:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 01:27:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-02 01:27:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 01:27:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-04-02 01:27:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-02 01:27:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 187 proven. 460 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-04-02 01:27:42,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:42,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984949781] [2023-04-02 01:27:42,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984949781] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:42,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197751443] [2023-04-02 01:27:42,256 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 01:27:42,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:42,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:42,258 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:42,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-04-02 01:27:42,335 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 01:27:42,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:42,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 42 conjunts are in the unsatisfiable core [2023-04-02 01:27:42,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:42,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-04-02 01:27:42,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-04-02 01:27:42,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197751443] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:42,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:42,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 27 [2023-04-02 01:27:42,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090273845] [2023-04-02 01:27:42,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:42,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-04-02 01:27:42,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:42,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-04-02 01:27:42,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2023-04-02 01:27:42,802 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 24 states have internal predecessors, (69), 19 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-04-02 01:27:43,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:43,160 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2023-04-02 01:27:43,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 01:27:43,161 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 24 states have internal predecessors, (69), 19 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 150 [2023-04-02 01:27:43,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:43,162 INFO L225 Difference]: With dead ends: 166 [2023-04-02 01:27:43,162 INFO L226 Difference]: Without dead ends: 164 [2023-04-02 01:27:43,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 315 SyntacticMatches, 36 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=667, Invalid=1783, Unknown=0, NotChecked=0, Total=2450 [2023-04-02 01:27:43,163 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 64 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:43,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 37 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:27:43,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-04-02 01:27:43,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2023-04-02 01:27:43,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 119 states have internal predecessors, (120), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-04-02 01:27:43,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2023-04-02 01:27:43,175 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 150 [2023-04-02 01:27:43,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:43,176 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2023-04-02 01:27:43,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 24 states have internal predecessors, (69), 19 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-04-02 01:27:43,176 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2023-04-02 01:27:43,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-04-02 01:27:43,177 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:43,177 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:43,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:43,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-04-02 01:27:43,377 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:43,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:43,378 INFO L85 PathProgramCache]: Analyzing trace with hash -995101305, now seen corresponding path program 35 times [2023-04-02 01:27:43,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:43,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953459471] [2023-04-02 01:27:43,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:43,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:43,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:43,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-02 01:27:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:43,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 01:27:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:43,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 01:27:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:43,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 01:27:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:43,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 01:27:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:43,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 01:27:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:43,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 01:27:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:43,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 01:27:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:43,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 01:27:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:44,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 01:27:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:44,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 01:27:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:44,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 01:27:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:44,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 01:27:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:44,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-02 01:27:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:44,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 01:27:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:44,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-04-02 01:27:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:44,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-02 01:27:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:44,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-04-02 01:27:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-04-02 01:27:44,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:44,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953459471] [2023-04-02 01:27:44,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953459471] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:44,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372415052] [2023-04-02 01:27:44,012 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-02 01:27:44,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:44,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:44,021 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:44,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-04-02 01:27:44,100 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2023-04-02 01:27:44,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:44,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 40 conjunts are in the unsatisfiable core [2023-04-02 01:27:44,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-04-02 01:27:44,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-04-02 01:27:44,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372415052] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:44,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:44,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 43 [2023-04-02 01:27:44,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851792814] [2023-04-02 01:27:44,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:44,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-04-02 01:27:44,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:44,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-04-02 01:27:44,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 01:27:44,690 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 43 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 42 states have internal predecessors, (69), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-02 01:27:45,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:45,465 INFO L93 Difference]: Finished difference Result 226 states and 246 transitions. [2023-04-02 01:27:45,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-04-02 01:27:45,465 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 42 states have internal predecessors, (69), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 157 [2023-04-02 01:27:45,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:45,466 INFO L225 Difference]: With dead ends: 226 [2023-04-02 01:27:45,466 INFO L226 Difference]: Without dead ends: 161 [2023-04-02 01:27:45,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 313 SyntacticMatches, 38 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2320 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1363, Invalid=5279, Unknown=0, NotChecked=0, Total=6642 [2023-04-02 01:27:45,467 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 42 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:45,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 37 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:27:45,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-04-02 01:27:45,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-04-02 01:27:45,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 120 states have internal predecessors, (121), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-04-02 01:27:45,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2023-04-02 01:27:45,485 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 157 [2023-04-02 01:27:45,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:45,485 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2023-04-02 01:27:45,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 42 states have internal predecessors, (69), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-02 01:27:45,485 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2023-04-02 01:27:45,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-04-02 01:27:45,486 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:45,486 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:45,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:45,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:45,692 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:45,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:45,693 INFO L85 PathProgramCache]: Analyzing trace with hash -953392915, now seen corresponding path program 36 times [2023-04-02 01:27:45,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:45,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745887657] [2023-04-02 01:27:45,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:45,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 01:27:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 01:27:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-02 01:27:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 01:27:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 01:27:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 01:27:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 01:27:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 01:27:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 01:27:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 01:27:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 01:27:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 01:27:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 01:27:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 01:27:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-04-02 01:27:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 01:27:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-02 01:27:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 01:27:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 207 proven. 514 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-04-02 01:27:46,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:46,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745887657] [2023-04-02 01:27:46,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745887657] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:46,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084095894] [2023-04-02 01:27:46,140 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-04-02 01:27:46,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:46,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:46,145 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:46,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-04-02 01:27:46,225 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-04-02 01:27:46,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:46,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 44 conjunts are in the unsatisfiable core [2023-04-02 01:27:46,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-04-02 01:27:46,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-04-02 01:27:46,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084095894] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:46,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:46,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 28 [2023-04-02 01:27:46,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443042413] [2023-04-02 01:27:46,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:46,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-04-02 01:27:46,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:46,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-04-02 01:27:46,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=510, Unknown=0, NotChecked=0, Total=756 [2023-04-02 01:27:46,737 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand has 28 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 25 states have internal predecessors, (72), 20 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-02 01:27:47,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:47,124 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2023-04-02 01:27:47,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-04-02 01:27:47,124 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 25 states have internal predecessors, (72), 20 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 158 [2023-04-02 01:27:47,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:47,125 INFO L225 Difference]: With dead ends: 174 [2023-04-02 01:27:47,125 INFO L226 Difference]: Without dead ends: 172 [2023-04-02 01:27:47,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 332 SyntacticMatches, 38 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=730, Invalid=1922, Unknown=0, NotChecked=0, Total=2652 [2023-04-02 01:27:47,126 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 66 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:47,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 47 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:27:47,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-04-02 01:27:47,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2023-04-02 01:27:47,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 125 states have internal predecessors, (126), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-04-02 01:27:47,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2023-04-02 01:27:47,144 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 158 [2023-04-02 01:27:47,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:47,145 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2023-04-02 01:27:47,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 25 states have internal predecessors, (72), 20 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-02 01:27:47,145 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2023-04-02 01:27:47,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-04-02 01:27:47,146 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:47,146 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:47,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:47,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-04-02 01:27:47,351 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:47,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:47,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1395690906, now seen corresponding path program 37 times [2023-04-02 01:27:47,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:47,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514866996] [2023-04-02 01:27:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:47,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:47,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:47,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 01:27:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:47,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 01:27:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:47,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-02 01:27:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:47,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 01:27:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:47,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 01:27:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:47,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 01:27:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:47,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 01:27:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:48,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 01:27:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:48,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 01:27:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:48,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 01:27:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:48,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 01:27:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:48,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 01:27:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:48,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 01:27:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:48,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 01:27:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-04-02 01:27:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 01:27:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:48,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-02 01:27:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:48,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 01:27:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:48,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-04-02 01:27:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:48,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-04-02 01:27:48,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:48,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514866996] [2023-04-02 01:27:48,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514866996] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:48,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460413416] [2023-04-02 01:27:48,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 01:27:48,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:48,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:48,017 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:48,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-04-02 01:27:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:48,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 42 conjunts are in the unsatisfiable core [2023-04-02 01:27:48,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:48,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-04-02 01:27:48,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-04-02 01:27:48,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460413416] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:48,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:48,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 45 [2023-04-02 01:27:48,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196433561] [2023-04-02 01:27:48,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:48,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-04-02 01:27:48,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:48,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-04-02 01:27:48,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2023-04-02 01:27:48,725 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 45 states, 45 states have (on average 1.6) internal successors, (72), 44 states have internal predecessors, (72), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-04-02 01:27:49,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:49,623 INFO L93 Difference]: Finished difference Result 237 states and 258 transitions. [2023-04-02 01:27:49,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-04-02 01:27:49,623 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.6) internal successors, (72), 44 states have internal predecessors, (72), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 165 [2023-04-02 01:27:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:49,624 INFO L225 Difference]: With dead ends: 237 [2023-04-02 01:27:49,624 INFO L226 Difference]: Without dead ends: 169 [2023-04-02 01:27:49,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 329 SyntacticMatches, 40 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2563 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1494, Invalid=5816, Unknown=0, NotChecked=0, Total=7310 [2023-04-02 01:27:49,626 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 43 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:49,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 47 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:27:49,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-04-02 01:27:49,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2023-04-02 01:27:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 125 states have (on average 1.016) internal successors, (127), 126 states have internal predecessors, (127), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-04-02 01:27:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2023-04-02 01:27:49,647 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 165 [2023-04-02 01:27:49,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:49,647 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2023-04-02 01:27:49,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.6) internal successors, (72), 44 states have internal predecessors, (72), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-04-02 01:27:49,647 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2023-04-02 01:27:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-04-02 01:27:49,649 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:49,649 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:49,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-04-02 01:27:49,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-04-02 01:27:49,855 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:49,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:49,855 INFO L85 PathProgramCache]: Analyzing trace with hash 552933324, now seen corresponding path program 38 times [2023-04-02 01:27:49,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:49,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060953476] [2023-04-02 01:27:49,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:49,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-02 01:27:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 01:27:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 01:27:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 01:27:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 01:27:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 01:27:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 01:27:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 01:27:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 01:27:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 01:27:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 01:27:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 01:27:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 01:27:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 01:27:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 01:27:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-02 01:27:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 01:27:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-04-02 01:27:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-04-02 01:27:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 228 proven. 571 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-04-02 01:27:50,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:50,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060953476] [2023-04-02 01:27:50,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060953476] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:50,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880210952] [2023-04-02 01:27:50,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:27:50,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:50,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:50,276 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:50,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-04-02 01:27:50,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:27:50,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:50,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 46 conjunts are in the unsatisfiable core [2023-04-02 01:27:50,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:50,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-04-02 01:27:50,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-04-02 01:27:50,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880210952] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:50,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:50,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 29 [2023-04-02 01:27:50,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214449603] [2023-04-02 01:27:50,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:50,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-04-02 01:27:50,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:50,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-04-02 01:27:50,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=544, Unknown=0, NotChecked=0, Total=812 [2023-04-02 01:27:50,923 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 26 states have internal predecessors, (75), 21 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-04-02 01:27:51,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:51,372 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2023-04-02 01:27:51,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 01:27:51,373 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 26 states have internal predecessors, (75), 21 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 166 [2023-04-02 01:27:51,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:51,374 INFO L225 Difference]: With dead ends: 182 [2023-04-02 01:27:51,374 INFO L226 Difference]: Without dead ends: 180 [2023-04-02 01:27:51,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 349 SyntacticMatches, 40 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=796, Invalid=2066, Unknown=0, NotChecked=0, Total=2862 [2023-04-02 01:27:51,375 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 70 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:51,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 32 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:27:51,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-04-02 01:27:51,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2023-04-02 01:27:51,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 131 states have internal predecessors, (132), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-02 01:27:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2023-04-02 01:27:51,394 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 166 [2023-04-02 01:27:51,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:51,394 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2023-04-02 01:27:51,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 26 states have internal predecessors, (75), 21 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-04-02 01:27:51,394 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2023-04-02 01:27:51,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-04-02 01:27:51,395 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:51,395 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:51,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:51,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-04-02 01:27:51,602 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:51,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:51,602 INFO L85 PathProgramCache]: Analyzing trace with hash -720104793, now seen corresponding path program 39 times [2023-04-02 01:27:51,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:51,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231024524] [2023-04-02 01:27:51,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:51,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-02 01:27:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 01:27:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 01:27:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 01:27:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 01:27:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 01:27:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 01:27:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 01:27:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 01:27:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 01:27:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 01:27:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 01:27:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 01:27:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 01:27:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 01:27:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-02 01:27:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 01:27:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-04-02 01:27:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-04-02 01:27:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-04-02 01:27:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-04-02 01:27:52,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:52,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231024524] [2023-04-02 01:27:52,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231024524] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:52,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144130745] [2023-04-02 01:27:52,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:27:52,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:52,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:52,393 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:52,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-04-02 01:27:52,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2023-04-02 01:27:52,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:52,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 44 conjunts are in the unsatisfiable core [2023-04-02 01:27:52,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:52,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-04-02 01:27:52,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-04-02 01:27:53,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144130745] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:53,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:53,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 45] total 47 [2023-04-02 01:27:53,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132628739] [2023-04-02 01:27:53,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:53,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-04-02 01:27:53,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:53,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-04-02 01:27:53,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=1630, Unknown=0, NotChecked=0, Total=2162 [2023-04-02 01:27:53,170 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 47 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 46 states have internal predecessors, (75), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-04-02 01:27:54,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:54,172 INFO L93 Difference]: Finished difference Result 248 states and 270 transitions. [2023-04-02 01:27:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-04-02 01:27:54,172 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 46 states have internal predecessors, (75), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 173 [2023-04-02 01:27:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:54,173 INFO L225 Difference]: With dead ends: 248 [2023-04-02 01:27:54,173 INFO L226 Difference]: Without dead ends: 177 [2023-04-02 01:27:54,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 345 SyntacticMatches, 42 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2818 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1631, Invalid=6379, Unknown=0, NotChecked=0, Total=8010 [2023-04-02 01:27:54,175 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 44 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:54,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 47 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:27:54,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-04-02 01:27:54,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-04-02 01:27:54,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 131 states have (on average 1.015267175572519) internal successors, (133), 132 states have internal predecessors, (133), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-02 01:27:54,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2023-04-02 01:27:54,196 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 173 [2023-04-02 01:27:54,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:54,196 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2023-04-02 01:27:54,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 46 states have internal predecessors, (75), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-04-02 01:27:54,197 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2023-04-02 01:27:54,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-04-02 01:27:54,197 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:54,197 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:54,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:54,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-04-02 01:27:54,404 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:54,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:54,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2096565747, now seen corresponding path program 40 times [2023-04-02 01:27:54,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:54,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015999348] [2023-04-02 01:27:54,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:54,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 01:27:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 01:27:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 01:27:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 01:27:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 01:27:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 01:27:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 01:27:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 01:27:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 01:27:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-04-02 01:27:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 01:27:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 01:27:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 01:27:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 01:27:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-02 01:27:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 01:27:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 01:27:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-04-02 01:27:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-02 01:27:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-04-02 01:27:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 250 proven. 631 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-04-02 01:27:54,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:54,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015999348] [2023-04-02 01:27:54,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015999348] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:54,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143994226] [2023-04-02 01:27:54,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 01:27:54,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:54,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:54,966 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:54,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-04-02 01:27:55,049 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 01:27:55,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:55,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 48 conjunts are in the unsatisfiable core [2023-04-02 01:27:55,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-04-02 01:27:55,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-04-02 01:27:55,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143994226] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:55,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:55,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 30 [2023-04-02 01:27:55,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492716660] [2023-04-02 01:27:55,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:55,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-04-02 01:27:55,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:55,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-04-02 01:27:55,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=579, Unknown=0, NotChecked=0, Total=870 [2023-04-02 01:27:55,636 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand has 30 states, 30 states have (on average 2.6) internal successors, (78), 27 states have internal predecessors, (78), 22 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-04-02 01:27:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:56,075 INFO L93 Difference]: Finished difference Result 190 states and 192 transitions. [2023-04-02 01:27:56,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-02 01:27:56,076 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 27 states have internal predecessors, (78), 22 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 174 [2023-04-02 01:27:56,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:56,077 INFO L225 Difference]: With dead ends: 190 [2023-04-02 01:27:56,077 INFO L226 Difference]: Without dead ends: 188 [2023-04-02 01:27:56,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 366 SyntacticMatches, 42 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1159 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2023-04-02 01:27:56,077 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 70 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:56,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 52 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:27:56,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-04-02 01:27:56,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2023-04-02 01:27:56,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 137 states have internal predecessors, (138), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-04-02 01:27:56,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2023-04-02 01:27:56,098 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 174 [2023-04-02 01:27:56,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:56,099 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2023-04-02 01:27:56,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 27 states have internal predecessors, (78), 22 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-04-02 01:27:56,099 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2023-04-02 01:27:56,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-04-02 01:27:56,100 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:56,100 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:56,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-04-02 01:27:56,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:56,306 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:56,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:56,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1476174522, now seen corresponding path program 41 times [2023-04-02 01:27:56,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:56,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684052090] [2023-04-02 01:27:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:56,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 01:27:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 01:27:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 01:27:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 01:27:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 01:27:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 01:27:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 01:27:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 01:27:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 01:27:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-04-02 01:27:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 01:27:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 01:27:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 01:27:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 01:27:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-02 01:27:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 01:27:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 01:27:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-04-02 01:27:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-02 01:27:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-04-02 01:27:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-04-02 01:27:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-04-02 01:27:57,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:57,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684052090] [2023-04-02 01:27:57,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684052090] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:57,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338294646] [2023-04-02 01:27:57,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-02 01:27:57,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:57,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:57,079 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:57,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-04-02 01:27:57,167 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-04-02 01:27:57,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:57,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 46 conjunts are in the unsatisfiable core [2023-04-02 01:27:57,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-04-02 01:27:57,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:27:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-04-02 01:27:57,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338294646] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:27:57,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:27:57,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 49 [2023-04-02 01:27:57,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422070291] [2023-04-02 01:27:57,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:27:57,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-04-02 01:27:57,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:27:57,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-04-02 01:27:57,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=1773, Unknown=0, NotChecked=0, Total=2352 [2023-04-02 01:27:57,890 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 49 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 48 states have internal predecessors, (78), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-02 01:27:58,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:27:58,902 INFO L93 Difference]: Finished difference Result 259 states and 282 transitions. [2023-04-02 01:27:58,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-04-02 01:27:58,903 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 48 states have internal predecessors, (78), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 181 [2023-04-02 01:27:58,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:27:58,904 INFO L225 Difference]: With dead ends: 259 [2023-04-02 01:27:58,904 INFO L226 Difference]: Without dead ends: 185 [2023-04-02 01:27:58,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 361 SyntacticMatches, 44 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3085 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1774, Invalid=6968, Unknown=0, NotChecked=0, Total=8742 [2023-04-02 01:27:58,906 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 45 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:27:58,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 52 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:27:58,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-04-02 01:27:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2023-04-02 01:27:58,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 137 states have (on average 1.0145985401459854) internal successors, (139), 138 states have internal predecessors, (139), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-04-02 01:27:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2023-04-02 01:27:58,926 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 181 [2023-04-02 01:27:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:27:58,927 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2023-04-02 01:27:58,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 48 states have internal predecessors, (78), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-02 01:27:58,927 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2023-04-02 01:27:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-04-02 01:27:58,928 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:27:58,928 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:27:58,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-04-02 01:27:59,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:59,134 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:27:59,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:27:59,134 INFO L85 PathProgramCache]: Analyzing trace with hash -772966740, now seen corresponding path program 42 times [2023-04-02 01:27:59,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:27:59,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109257103] [2023-04-02 01:27:59,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:27:59,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:27:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:27:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 01:27:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 01:27:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 01:27:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 01:27:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 01:27:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 01:27:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 01:27:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 01:27:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 01:27:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 01:27:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 01:27:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 01:27:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 01:27:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 01:27:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-04-02 01:27:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-04-02 01:27:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-04-02 01:27:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-04-02 01:27:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-02 01:27:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-04-02 01:27:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-04-02 01:27:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:27:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 273 proven. 694 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-04-02 01:27:59,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:27:59,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109257103] [2023-04-02 01:27:59,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109257103] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:27:59,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625150830] [2023-04-02 01:27:59,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-04-02 01:27:59,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:27:59,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:27:59,629 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:27:59,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-04-02 01:27:59,720 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2023-04-02 01:27:59,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:27:59,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 50 conjunts are in the unsatisfiable core [2023-04-02 01:27:59,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:27:59,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-04-02 01:27:59,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:00,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-04-02 01:28:00,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625150830] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:00,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:00,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 31 [2023-04-02 01:28:00,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511003077] [2023-04-02 01:28:00,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:00,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-04-02 01:28:00,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:00,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-04-02 01:28:00,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=615, Unknown=0, NotChecked=0, Total=930 [2023-04-02 01:28:00,315 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 28 states have internal predecessors, (81), 23 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-02 01:28:00,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:00,732 INFO L93 Difference]: Finished difference Result 198 states and 200 transitions. [2023-04-02 01:28:00,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-02 01:28:00,732 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 28 states have internal predecessors, (81), 23 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 182 [2023-04-02 01:28:00,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:00,733 INFO L225 Difference]: With dead ends: 198 [2023-04-02 01:28:00,733 INFO L226 Difference]: Without dead ends: 196 [2023-04-02 01:28:00,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 383 SyntacticMatches, 44 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=937, Invalid=2369, Unknown=0, NotChecked=0, Total=3306 [2023-04-02 01:28:00,734 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 74 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:00,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 22 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:28:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-04-02 01:28:00,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 192. [2023-04-02 01:28:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 143 states have internal predecessors, (144), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-02 01:28:00,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2023-04-02 01:28:00,756 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 182 [2023-04-02 01:28:00,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:00,757 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2023-04-02 01:28:00,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 28 states have internal predecessors, (81), 23 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-02 01:28:00,757 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2023-04-02 01:28:00,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-04-02 01:28:00,758 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:00,758 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:00,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-04-02 01:28:00,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-04-02 01:28:00,964 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:00,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:00,964 INFO L85 PathProgramCache]: Analyzing trace with hash 815609799, now seen corresponding path program 43 times [2023-04-02 01:28:00,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:00,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144727653] [2023-04-02 01:28:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:00,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 01:28:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 01:28:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 01:28:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 01:28:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 01:28:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 01:28:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 01:28:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 01:28:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 01:28:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 01:28:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 01:28:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 01:28:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 01:28:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 01:28:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-04-02 01:28:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-04-02 01:28:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-04-02 01:28:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-04-02 01:28:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-02 01:28:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-04-02 01:28:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-04-02 01:28:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-02 01:28:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-04-02 01:28:01,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:01,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144727653] [2023-04-02 01:28:01,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144727653] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:01,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002556673] [2023-04-02 01:28:01,796 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 01:28:01,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:01,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:01,797 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:01,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-04-02 01:28:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:01,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 48 conjunts are in the unsatisfiable core [2023-04-02 01:28:01,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-04-02 01:28:01,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:02,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-04-02 01:28:02,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002556673] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:02,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:02,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 51 [2023-04-02 01:28:02,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721757923] [2023-04-02 01:28:02,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:02,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-04-02 01:28:02,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:02,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-04-02 01:28:02,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=628, Invalid=1922, Unknown=0, NotChecked=0, Total=2550 [2023-04-02 01:28:02,644 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 51 states, 51 states have (on average 1.588235294117647) internal successors, (81), 50 states have internal predecessors, (81), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-04-02 01:28:03,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:03,811 INFO L93 Difference]: Finished difference Result 270 states and 294 transitions. [2023-04-02 01:28:03,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-04-02 01:28:03,812 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.588235294117647) internal successors, (81), 50 states have internal predecessors, (81), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 189 [2023-04-02 01:28:03,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:03,813 INFO L225 Difference]: With dead ends: 270 [2023-04-02 01:28:03,813 INFO L226 Difference]: Without dead ends: 193 [2023-04-02 01:28:03,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 377 SyntacticMatches, 46 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3364 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1923, Invalid=7583, Unknown=0, NotChecked=0, Total=9506 [2023-04-02 01:28:03,815 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 46 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:03,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 47 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:28:03,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-04-02 01:28:03,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-04-02 01:28:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 143 states have (on average 1.013986013986014) internal successors, (145), 144 states have internal predecessors, (145), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-02 01:28:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2023-04-02 01:28:03,840 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 189 [2023-04-02 01:28:03,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:03,840 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2023-04-02 01:28:03,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.588235294117647) internal successors, (81), 50 states have internal predecessors, (81), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-04-02 01:28:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2023-04-02 01:28:03,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-04-02 01:28:03,841 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:03,841 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:03,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-04-02 01:28:04,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-04-02 01:28:04,047 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:04,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:04,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1834841299, now seen corresponding path program 44 times [2023-04-02 01:28:04,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:04,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309731760] [2023-04-02 01:28:04,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:04,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 01:28:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 01:28:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 01:28:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 01:28:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 01:28:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 01:28:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 01:28:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 01:28:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 01:28:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 01:28:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 01:28:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 01:28:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 01:28:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 01:28:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 01:28:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-02 01:28:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-04-02 01:28:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-04-02 01:28:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-04-02 01:28:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-04-02 01:28:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-04-02 01:28:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-04-02 01:28:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 297 proven. 760 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-04-02 01:28:04,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:04,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309731760] [2023-04-02 01:28:04,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309731760] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:04,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391915672] [2023-04-02 01:28:04,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:28:04,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:04,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:04,683 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:04,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-04-02 01:28:04,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:28:04,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:28:04,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 52 conjunts are in the unsatisfiable core [2023-04-02 01:28:04,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-04-02 01:28:04,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-04-02 01:28:05,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391915672] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:05,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:05,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 32 [2023-04-02 01:28:05,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646360385] [2023-04-02 01:28:05,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:05,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-04-02 01:28:05,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:05,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-04-02 01:28:05,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=652, Unknown=0, NotChecked=0, Total=992 [2023-04-02 01:28:05,419 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand has 32 states, 32 states have (on average 2.625) internal successors, (84), 29 states have internal predecessors, (84), 24 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-04-02 01:28:05,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:05,844 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2023-04-02 01:28:05,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-02 01:28:05,844 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.625) internal successors, (84), 29 states have internal predecessors, (84), 24 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 190 [2023-04-02 01:28:05,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:05,845 INFO L225 Difference]: With dead ends: 206 [2023-04-02 01:28:05,845 INFO L226 Difference]: Without dead ends: 204 [2023-04-02 01:28:05,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 400 SyntacticMatches, 46 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1338 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1012, Invalid=2528, Unknown=0, NotChecked=0, Total=3540 [2023-04-02 01:28:05,846 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 73 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:05,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 37 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:28:05,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-04-02 01:28:05,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 200. [2023-04-02 01:28:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 149 states have internal predecessors, (150), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-04-02 01:28:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2023-04-02 01:28:05,866 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 190 [2023-04-02 01:28:05,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:05,866 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2023-04-02 01:28:05,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.625) internal successors, (84), 29 states have internal predecessors, (84), 24 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-04-02 01:28:05,866 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2023-04-02 01:28:05,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-04-02 01:28:05,867 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:05,867 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:05,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-04-02 01:28:06,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-04-02 01:28:06,068 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:06,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:06,068 INFO L85 PathProgramCache]: Analyzing trace with hash 440483878, now seen corresponding path program 45 times [2023-04-02 01:28:06,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:06,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909971413] [2023-04-02 01:28:06,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:06,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 01:28:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 01:28:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 01:28:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 01:28:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 01:28:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 01:28:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 01:28:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 01:28:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 01:28:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 01:28:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 01:28:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 01:28:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 01:28:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 01:28:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 01:28:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-02 01:28:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-04-02 01:28:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-04-02 01:28:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-04-02 01:28:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-04-02 01:28:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-04-02 01:28:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-04-02 01:28:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-04-02 01:28:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:06,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-04-02 01:28:06,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:06,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909971413] [2023-04-02 01:28:06,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909971413] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:06,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501848187] [2023-04-02 01:28:06,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:28:06,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:06,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:06,957 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:06,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-04-02 01:28:07,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2023-04-02 01:28:07,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:28:07,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 50 conjunts are in the unsatisfiable core [2023-04-02 01:28:07,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:07,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-04-02 01:28:07,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-04-02 01:28:07,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501848187] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:07,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:07,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 53 [2023-04-02 01:28:07,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941875580] [2023-04-02 01:28:07,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:07,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-04-02 01:28:07,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:07,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-04-02 01:28:07,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=2077, Unknown=0, NotChecked=0, Total=2756 [2023-04-02 01:28:07,866 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 53 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 52 states have internal predecessors, (84), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-02 01:28:08,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:08,946 INFO L93 Difference]: Finished difference Result 281 states and 306 transitions. [2023-04-02 01:28:08,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-04-02 01:28:08,947 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 52 states have internal predecessors, (84), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 197 [2023-04-02 01:28:08,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:08,948 INFO L225 Difference]: With dead ends: 281 [2023-04-02 01:28:08,948 INFO L226 Difference]: Without dead ends: 201 [2023-04-02 01:28:08,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 393 SyntacticMatches, 48 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3655 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2078, Invalid=8224, Unknown=0, NotChecked=0, Total=10302 [2023-04-02 01:28:08,950 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 47 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:08,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 47 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:28:08,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-04-02 01:28:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2023-04-02 01:28:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 149 states have (on average 1.0134228187919463) internal successors, (151), 150 states have internal predecessors, (151), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-04-02 01:28:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2023-04-02 01:28:08,973 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 197 [2023-04-02 01:28:08,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:08,974 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2023-04-02 01:28:08,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 52 states have internal predecessors, (84), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-02 01:28:08,974 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2023-04-02 01:28:08,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-04-02 01:28:08,975 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:08,975 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:08,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-04-02 01:28:09,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:09,181 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:09,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:09,181 INFO L85 PathProgramCache]: Analyzing trace with hash -360198772, now seen corresponding path program 46 times [2023-04-02 01:28:09,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:09,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264831741] [2023-04-02 01:28:09,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:09,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-04-02 01:28:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 01:28:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 01:28:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 01:28:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 01:28:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 01:28:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 01:28:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 01:28:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 01:28:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-04-02 01:28:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 01:28:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 01:28:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 01:28:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 01:28:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 01:28:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 01:28:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-04-02 01:28:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-02 01:28:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-04-02 01:28:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-04-02 01:28:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-04-02 01:28:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-04-02 01:28:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-04-02 01:28:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 322 proven. 829 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-04-02 01:28:09,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:09,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264831741] [2023-04-02 01:28:09,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264831741] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:09,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135739717] [2023-04-02 01:28:09,733 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 01:28:09,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:09,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:09,734 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:09,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-04-02 01:28:09,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 01:28:09,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:28:09,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 54 conjunts are in the unsatisfiable core [2023-04-02 01:28:09,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-04-02 01:28:09,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-04-02 01:28:10,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135739717] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:10,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:10,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 33 [2023-04-02 01:28:10,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117299251] [2023-04-02 01:28:10,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:10,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-04-02 01:28:10,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:10,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-04-02 01:28:10,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 01:28:10,475 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 30 states have internal predecessors, (87), 25 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-02 01:28:10,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:10,924 INFO L93 Difference]: Finished difference Result 214 states and 216 transitions. [2023-04-02 01:28:10,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-02 01:28:10,925 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 30 states have internal predecessors, (87), 25 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 198 [2023-04-02 01:28:10,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:10,926 INFO L225 Difference]: With dead ends: 214 [2023-04-02 01:28:10,926 INFO L226 Difference]: Without dead ends: 212 [2023-04-02 01:28:10,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 417 SyntacticMatches, 48 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1090, Invalid=2692, Unknown=0, NotChecked=0, Total=3782 [2023-04-02 01:28:10,926 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 76 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:10,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 32 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:28:10,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-04-02 01:28:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 208. [2023-04-02 01:28:10,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 155 states have internal predecessors, (156), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-02 01:28:10,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2023-04-02 01:28:10,943 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 198 [2023-04-02 01:28:10,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:10,943 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2023-04-02 01:28:10,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 30 states have internal predecessors, (87), 25 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-02 01:28:10,943 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2023-04-02 01:28:10,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-04-02 01:28:10,944 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:10,944 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:10,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-04-02 01:28:11,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-04-02 01:28:11,144 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:11,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:11,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1596103449, now seen corresponding path program 47 times [2023-04-02 01:28:11,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:11,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420473382] [2023-04-02 01:28:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:11,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-04-02 01:28:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 01:28:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 01:28:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 01:28:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 01:28:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 01:28:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 01:28:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 01:28:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 01:28:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-04-02 01:28:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 01:28:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 01:28:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 01:28:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 01:28:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 01:28:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 01:28:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-04-02 01:28:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-02 01:28:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-04-02 01:28:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-04-02 01:28:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-04-02 01:28:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-04-02 01:28:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-04-02 01:28:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-04-02 01:28:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:12,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-04-02 01:28:12,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:12,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420473382] [2023-04-02 01:28:12,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420473382] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:12,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255540699] [2023-04-02 01:28:12,118 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-02 01:28:12,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:12,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:12,125 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:12,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-04-02 01:28:12,218 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2023-04-02 01:28:12,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:28:12,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 52 conjunts are in the unsatisfiable core [2023-04-02 01:28:12,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-04-02 01:28:12,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:13,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-04-02 01:28:13,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255540699] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:13,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:13,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 55 [2023-04-02 01:28:13,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809471858] [2023-04-02 01:28:13,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:13,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-04-02 01:28:13,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-04-02 01:28:13,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=732, Invalid=2238, Unknown=0, NotChecked=0, Total=2970 [2023-04-02 01:28:13,086 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 55 states, 55 states have (on average 1.5818181818181818) internal successors, (87), 54 states have internal predecessors, (87), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-04-02 01:28:14,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:14,266 INFO L93 Difference]: Finished difference Result 292 states and 318 transitions. [2023-04-02 01:28:14,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-04-02 01:28:14,267 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.5818181818181818) internal successors, (87), 54 states have internal predecessors, (87), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 205 [2023-04-02 01:28:14,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:14,268 INFO L225 Difference]: With dead ends: 292 [2023-04-02 01:28:14,268 INFO L226 Difference]: Without dead ends: 209 [2023-04-02 01:28:14,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 409 SyntacticMatches, 50 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3958 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2239, Invalid=8891, Unknown=0, NotChecked=0, Total=11130 [2023-04-02 01:28:14,270 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 48 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:14,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 52 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:28:14,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-04-02 01:28:14,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-04-02 01:28:14,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 156 states have internal predecessors, (157), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-02 01:28:14,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2023-04-02 01:28:14,299 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 205 [2023-04-02 01:28:14,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:14,299 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2023-04-02 01:28:14,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.5818181818181818) internal successors, (87), 54 states have internal predecessors, (87), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-04-02 01:28:14,299 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2023-04-02 01:28:14,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-04-02 01:28:14,300 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:14,300 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:14,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-04-02 01:28:14,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-04-02 01:28:14,501 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:14,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:14,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1886704563, now seen corresponding path program 48 times [2023-04-02 01:28:14,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:14,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63631018] [2023-04-02 01:28:14,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:14,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 01:28:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 01:28:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 01:28:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 01:28:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 01:28:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 01:28:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 01:28:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 01:28:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 01:28:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 01:28:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 01:28:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 01:28:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-02 01:28:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 01:28:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-04-02 01:28:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-02 01:28:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-04-02 01:28:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-02 01:28:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-04-02 01:28:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-04-02 01:28:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-04-02 01:28:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-04-02 01:28:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-04-02 01:28:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-04-02 01:28:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 348 proven. 901 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-04-02 01:28:15,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:15,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63631018] [2023-04-02 01:28:15,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63631018] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:15,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958616352] [2023-04-02 01:28:15,082 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-04-02 01:28:15,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:15,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:15,083 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:15,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-04-02 01:28:15,176 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2023-04-02 01:28:15,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:28:15,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 56 conjunts are in the unsatisfiable core [2023-04-02 01:28:15,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:15,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-04-02 01:28:15,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:15,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-04-02 01:28:15,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958616352] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:15,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:15,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 34 [2023-04-02 01:28:15,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866261610] [2023-04-02 01:28:15,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:15,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-04-02 01:28:15,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:15,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-04-02 01:28:15,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=729, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 01:28:15,936 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 31 states have internal predecessors, (90), 26 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-04-02 01:28:16,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:16,422 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2023-04-02 01:28:16,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-04-02 01:28:16,423 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 31 states have internal predecessors, (90), 26 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 206 [2023-04-02 01:28:16,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:16,424 INFO L225 Difference]: With dead ends: 222 [2023-04-02 01:28:16,424 INFO L226 Difference]: Without dead ends: 220 [2023-04-02 01:28:16,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 434 SyntacticMatches, 50 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1529 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1171, Invalid=2861, Unknown=0, NotChecked=0, Total=4032 [2023-04-02 01:28:16,425 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 75 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:16,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 62 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:28:16,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-04-02 01:28:16,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216. [2023-04-02 01:28:16,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-02 01:28:16,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2023-04-02 01:28:16,443 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 206 [2023-04-02 01:28:16,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:16,443 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2023-04-02 01:28:16,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 31 states have internal predecessors, (90), 26 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-04-02 01:28:16,443 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2023-04-02 01:28:16,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-04-02 01:28:16,444 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:16,445 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:16,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-04-02 01:28:16,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-04-02 01:28:16,646 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:16,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:16,647 INFO L85 PathProgramCache]: Analyzing trace with hash -508093690, now seen corresponding path program 49 times [2023-04-02 01:28:16,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:16,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183028850] [2023-04-02 01:28:16,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:16,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 01:28:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 01:28:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 01:28:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 01:28:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 01:28:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 01:28:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 01:28:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 01:28:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 01:28:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 01:28:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 01:28:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 01:28:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-02 01:28:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 01:28:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-04-02 01:28:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-02 01:28:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-04-02 01:28:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-02 01:28:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-04-02 01:28:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-04-02 01:28:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-04-02 01:28:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-04-02 01:28:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-04-02 01:28:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-04-02 01:28:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-04-02 01:28:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-04-02 01:28:17,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:17,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183028850] [2023-04-02 01:28:17,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183028850] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:17,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223573188] [2023-04-02 01:28:17,787 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 01:28:17,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:17,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:17,789 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:17,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-04-02 01:28:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:17,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 54 conjunts are in the unsatisfiable core [2023-04-02 01:28:17,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:18,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-04-02 01:28:18,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-04-02 01:28:18,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223573188] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:18,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:18,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 57 [2023-04-02 01:28:18,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720948545] [2023-04-02 01:28:18,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:18,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-04-02 01:28:18,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:18,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-04-02 01:28:18,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=2405, Unknown=0, NotChecked=0, Total=3192 [2023-04-02 01:28:18,816 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 57 states, 57 states have (on average 1.5789473684210527) internal successors, (90), 56 states have internal predecessors, (90), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-02 01:28:20,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:20,065 INFO L93 Difference]: Finished difference Result 303 states and 330 transitions. [2023-04-02 01:28:20,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-04-02 01:28:20,065 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.5789473684210527) internal successors, (90), 56 states have internal predecessors, (90), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 213 [2023-04-02 01:28:20,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:20,066 INFO L225 Difference]: With dead ends: 303 [2023-04-02 01:28:20,067 INFO L226 Difference]: Without dead ends: 217 [2023-04-02 01:28:20,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 425 SyntacticMatches, 52 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4273 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2406, Invalid=9584, Unknown=0, NotChecked=0, Total=11990 [2023-04-02 01:28:20,068 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 49 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:20,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 52 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:28:20,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-04-02 01:28:20,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2023-04-02 01:28:20,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 161 states have (on average 1.0124223602484472) internal successors, (163), 162 states have internal predecessors, (163), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-02 01:28:20,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2023-04-02 01:28:20,096 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 213 [2023-04-02 01:28:20,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:20,096 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2023-04-02 01:28:20,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.5789473684210527) internal successors, (90), 56 states have internal predecessors, (90), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-02 01:28:20,096 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2023-04-02 01:28:20,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-04-02 01:28:20,097 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:20,097 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:20,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-04-02 01:28:20,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-04-02 01:28:20,304 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:20,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:20,304 INFO L85 PathProgramCache]: Analyzing trace with hash 418520172, now seen corresponding path program 50 times [2023-04-02 01:28:20,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:20,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194081684] [2023-04-02 01:28:20,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:20,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 01:28:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-02 01:28:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 01:28:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 01:28:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 01:28:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 01:28:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 01:28:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 01:28:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 01:28:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 01:28:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 01:28:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 01:28:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 01:28:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-04-02 01:28:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 01:28:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-02 01:28:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 01:28:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-04-02 01:28:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-02 01:28:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-04-02 01:28:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-04-02 01:28:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-04-02 01:28:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-04-02 01:28:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-04-02 01:28:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-04-02 01:28:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:20,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 375 proven. 976 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-04-02 01:28:20,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:20,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194081684] [2023-04-02 01:28:20,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194081684] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:20,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823157811] [2023-04-02 01:28:20,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:28:20,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:20,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:20,973 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:20,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-04-02 01:28:21,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:28:21,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:28:21,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 58 conjunts are in the unsatisfiable core [2023-04-02 01:28:21,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-04-02 01:28:21,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-04-02 01:28:21,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823157811] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:21,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:21,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 35 [2023-04-02 01:28:21,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715074396] [2023-04-02 01:28:21,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:21,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-04-02 01:28:21,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:21,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-04-02 01:28:21,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=769, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 01:28:21,858 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 32 states have internal predecessors, (93), 27 states have call successors, (30), 4 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-02 01:28:22,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:22,376 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2023-04-02 01:28:22,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-02 01:28:22,377 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 32 states have internal predecessors, (93), 27 states have call successors, (30), 4 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 214 [2023-04-02 01:28:22,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:22,378 INFO L225 Difference]: With dead ends: 230 [2023-04-02 01:28:22,378 INFO L226 Difference]: Without dead ends: 228 [2023-04-02 01:28:22,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 451 SyntacticMatches, 52 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1629 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1255, Invalid=3035, Unknown=0, NotChecked=0, Total=4290 [2023-04-02 01:28:22,379 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 82 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:22,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 42 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:28:22,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-04-02 01:28:22,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2023-04-02 01:28:22,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 167 states have internal predecessors, (168), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-02 01:28:22,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2023-04-02 01:28:22,406 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 214 [2023-04-02 01:28:22,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:22,406 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2023-04-02 01:28:22,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 32 states have internal predecessors, (93), 27 states have call successors, (30), 4 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-02 01:28:22,407 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2023-04-02 01:28:22,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-04-02 01:28:22,407 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:22,408 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:22,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-04-02 01:28:22,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:22,608 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:22,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash -941188601, now seen corresponding path program 51 times [2023-04-02 01:28:22,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:22,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652007123] [2023-04-02 01:28:22,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:22,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 01:28:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-02 01:28:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 01:28:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 01:28:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 01:28:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 01:28:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 01:28:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 01:28:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 01:28:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 01:28:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 01:28:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 01:28:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 01:28:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-04-02 01:28:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 01:28:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-02 01:28:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 01:28:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-04-02 01:28:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-02 01:28:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-04-02 01:28:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-04-02 01:28:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-04-02 01:28:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-04-02 01:28:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-04-02 01:28:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-04-02 01:28:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-04-02 01:28:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-04-02 01:28:23,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:23,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652007123] [2023-04-02 01:28:23,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652007123] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:23,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301343985] [2023-04-02 01:28:23,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:28:23,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:23,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:23,689 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:23,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-04-02 01:28:23,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-04-02 01:28:23,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:28:23,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 56 conjunts are in the unsatisfiable core [2023-04-02 01:28:23,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-04-02 01:28:23,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:24,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-04-02 01:28:24,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301343985] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:24,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:24,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57, 57] total 59 [2023-04-02 01:28:24,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335667757] [2023-04-02 01:28:24,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:24,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-04-02 01:28:24,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:24,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-04-02 01:28:24,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=844, Invalid=2578, Unknown=0, NotChecked=0, Total=3422 [2023-04-02 01:28:24,778 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 59 states, 59 states have (on average 1.576271186440678) internal successors, (93), 58 states have internal predecessors, (93), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-02 01:28:26,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:26,149 INFO L93 Difference]: Finished difference Result 314 states and 342 transitions. [2023-04-02 01:28:26,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-04-02 01:28:26,149 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.576271186440678) internal successors, (93), 58 states have internal predecessors, (93), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 221 [2023-04-02 01:28:26,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:26,150 INFO L225 Difference]: With dead ends: 314 [2023-04-02 01:28:26,150 INFO L226 Difference]: Without dead ends: 225 [2023-04-02 01:28:26,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 441 SyntacticMatches, 54 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4600 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2579, Invalid=10303, Unknown=0, NotChecked=0, Total=12882 [2023-04-02 01:28:26,152 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 50 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:26,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 42 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:28:26,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-04-02 01:28:26,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2023-04-02 01:28:26,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 167 states have (on average 1.0119760479041917) internal successors, (169), 168 states have internal predecessors, (169), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-02 01:28:26,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2023-04-02 01:28:26,180 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 221 [2023-04-02 01:28:26,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:26,180 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2023-04-02 01:28:26,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.576271186440678) internal successors, (93), 58 states have internal predecessors, (93), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-02 01:28:26,180 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2023-04-02 01:28:26,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-04-02 01:28:26,181 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:26,181 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:26,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-04-02 01:28:26,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-04-02 01:28:26,387 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:26,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:26,387 INFO L85 PathProgramCache]: Analyzing trace with hash -338373267, now seen corresponding path program 52 times [2023-04-02 01:28:26,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:26,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691752120] [2023-04-02 01:28:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:26,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 01:28:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 01:28:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 01:28:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 01:28:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 01:28:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 01:28:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 01:28:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 01:28:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 01:28:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 01:28:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 01:28:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 01:28:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 01:28:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 01:28:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-02 01:28:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 01:28:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-04-02 01:28:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-04-02 01:28:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-04-02 01:28:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-04-02 01:28:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-04-02 01:28:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-04-02 01:28:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-04-02 01:28:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-04-02 01:28:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-04-02 01:28:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 01:28:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:27,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 403 proven. 1054 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-04-02 01:28:27,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:27,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691752120] [2023-04-02 01:28:27,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691752120] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:27,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123596129] [2023-04-02 01:28:27,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 01:28:27,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:27,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:27,088 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:27,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-04-02 01:28:27,171 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 01:28:27,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:28:27,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 60 conjunts are in the unsatisfiable core [2023-04-02 01:28:27,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-04-02 01:28:27,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-04-02 01:28:27,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123596129] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:27,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:27,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 36 [2023-04-02 01:28:27,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121394058] [2023-04-02 01:28:27,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:27,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-04-02 01:28:27,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-04-02 01:28:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=810, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 01:28:27,968 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand has 36 states, 36 states have (on average 2.6666666666666665) internal successors, (96), 33 states have internal predecessors, (96), 28 states have call successors, (31), 4 states have call predecessors, (31), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-02 01:28:28,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:28,482 INFO L93 Difference]: Finished difference Result 238 states and 240 transitions. [2023-04-02 01:28:28,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-02 01:28:28,482 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6666666666666665) internal successors, (96), 33 states have internal predecessors, (96), 28 states have call successors, (31), 4 states have call predecessors, (31), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 222 [2023-04-02 01:28:28,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:28,483 INFO L225 Difference]: With dead ends: 238 [2023-04-02 01:28:28,483 INFO L226 Difference]: Without dead ends: 236 [2023-04-02 01:28:28,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 468 SyntacticMatches, 54 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1732 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1342, Invalid=3214, Unknown=0, NotChecked=0, Total=4556 [2023-04-02 01:28:28,484 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 81 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:28,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 52 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:28:28,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-04-02 01:28:28,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 232. [2023-04-02 01:28:28,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 173 states have internal predecessors, (174), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-02 01:28:28,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2023-04-02 01:28:28,514 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 222 [2023-04-02 01:28:28,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:28,514 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2023-04-02 01:28:28,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6666666666666665) internal successors, (96), 33 states have internal predecessors, (96), 28 states have call successors, (31), 4 states have call predecessors, (31), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-02 01:28:28,514 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2023-04-02 01:28:28,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-04-02 01:28:28,515 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:28,515 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:28,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-04-02 01:28:28,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:28,721 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:28,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:28,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1947397606, now seen corresponding path program 53 times [2023-04-02 01:28:28,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:28,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890312817] [2023-04-02 01:28:28,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:28,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 01:28:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 01:28:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 01:28:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 01:28:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 01:28:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 01:28:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 01:28:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 01:28:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 01:28:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 01:28:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 01:28:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 01:28:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 01:28:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 01:28:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-02 01:28:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 01:28:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-04-02 01:28:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-04-02 01:28:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-04-02 01:28:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-04-02 01:28:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-04-02 01:28:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-04-02 01:28:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-04-02 01:28:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-04-02 01:28:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-04-02 01:28:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 01:28:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-04-02 01:28:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-04-02 01:28:29,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:29,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890312817] [2023-04-02 01:28:29,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890312817] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:29,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995776974] [2023-04-02 01:28:29,857 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-02 01:28:29,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:29,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:29,859 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:29,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-04-02 01:28:29,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2023-04-02 01:28:29,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:28:29,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 58 conjunts are in the unsatisfiable core [2023-04-02 01:28:29,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-04-02 01:28:30,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-04-02 01:28:31,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995776974] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:31,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:31,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 61 [2023-04-02 01:28:31,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869507933] [2023-04-02 01:28:31,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:31,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-04-02 01:28:31,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:31,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-04-02 01:28:31,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=2757, Unknown=0, NotChecked=0, Total=3660 [2023-04-02 01:28:31,027 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 61 states, 61 states have (on average 1.5737704918032787) internal successors, (96), 60 states have internal predecessors, (96), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-02 01:28:32,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:32,400 INFO L93 Difference]: Finished difference Result 325 states and 354 transitions. [2023-04-02 01:28:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-04-02 01:28:32,400 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.5737704918032787) internal successors, (96), 60 states have internal predecessors, (96), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 229 [2023-04-02 01:28:32,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:32,401 INFO L225 Difference]: With dead ends: 325 [2023-04-02 01:28:32,401 INFO L226 Difference]: Without dead ends: 233 [2023-04-02 01:28:32,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 457 SyntacticMatches, 56 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4939 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2758, Invalid=11048, Unknown=0, NotChecked=0, Total=13806 [2023-04-02 01:28:32,403 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 51 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:32,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 47 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:28:32,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-04-02 01:28:32,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2023-04-02 01:28:32,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 173 states have (on average 1.0115606936416186) internal successors, (175), 174 states have internal predecessors, (175), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-02 01:28:32,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2023-04-02 01:28:32,434 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 229 [2023-04-02 01:28:32,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:32,434 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2023-04-02 01:28:32,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.5737704918032787) internal successors, (96), 60 states have internal predecessors, (96), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-02 01:28:32,434 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2023-04-02 01:28:32,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-04-02 01:28:32,435 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:32,436 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:32,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-04-02 01:28:32,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:32,642 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:32,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:32,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1562746036, now seen corresponding path program 54 times [2023-04-02 01:28:32,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:32,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879954549] [2023-04-02 01:28:32,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:32,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 01:28:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 01:28:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 01:28:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 01:28:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 01:28:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 01:28:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 01:28:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 01:28:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-04-02 01:28:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 01:28:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 01:28:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 01:28:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 01:28:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-02 01:28:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 01:28:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 01:28:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-04-02 01:28:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-02 01:28:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-04-02 01:28:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-04-02 01:28:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-04-02 01:28:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-04-02 01:28:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-04-02 01:28:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-04-02 01:28:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-04-02 01:28:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-04-02 01:28:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-04-02 01:28:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 432 proven. 1135 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-04-02 01:28:33,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:33,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879954549] [2023-04-02 01:28:33,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879954549] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:33,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466388869] [2023-04-02 01:28:33,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-04-02 01:28:33,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:33,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:33,341 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:33,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-04-02 01:28:33,450 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2023-04-02 01:28:33,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:28:33,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 62 conjunts are in the unsatisfiable core [2023-04-02 01:28:33,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:33,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-04-02 01:28:33,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-04-02 01:28:34,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466388869] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:34,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:34,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 37 [2023-04-02 01:28:34,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823635931] [2023-04-02 01:28:34,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:34,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-04-02 01:28:34,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:34,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-04-02 01:28:34,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 01:28:34,278 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 34 states have internal predecessors, (99), 29 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-02 01:28:34,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:34,806 INFO L93 Difference]: Finished difference Result 246 states and 248 transitions. [2023-04-02 01:28:34,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-04-02 01:28:34,807 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 34 states have internal predecessors, (99), 29 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 230 [2023-04-02 01:28:34,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:34,808 INFO L225 Difference]: With dead ends: 246 [2023-04-02 01:28:34,808 INFO L226 Difference]: Without dead ends: 244 [2023-04-02 01:28:34,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 485 SyntacticMatches, 56 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1838 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1432, Invalid=3398, Unknown=0, NotChecked=0, Total=4830 [2023-04-02 01:28:34,809 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 84 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:34,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 37 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:28:34,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-04-02 01:28:34,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 240. [2023-04-02 01:28:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 179 states have internal predecessors, (180), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-04-02 01:28:34,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2023-04-02 01:28:34,840 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 230 [2023-04-02 01:28:34,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:34,840 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2023-04-02 01:28:34,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 34 states have internal predecessors, (99), 29 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-02 01:28:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2023-04-02 01:28:34,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-04-02 01:28:34,841 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:34,842 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:34,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-04-02 01:28:35,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:35,048 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:35,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:35,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1078646567, now seen corresponding path program 55 times [2023-04-02 01:28:35,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:35,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831772469] [2023-04-02 01:28:35,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:35,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 01:28:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 01:28:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 01:28:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 01:28:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 01:28:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 01:28:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 01:28:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 01:28:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-04-02 01:28:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 01:28:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 01:28:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 01:28:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 01:28:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-02 01:28:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 01:28:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 01:28:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-04-02 01:28:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-02 01:28:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-04-02 01:28:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-04-02 01:28:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-04-02 01:28:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-04-02 01:28:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-04-02 01:28:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-04-02 01:28:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-04-02 01:28:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-04-02 01:28:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-04-02 01:28:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-04-02 01:28:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-04-02 01:28:36,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:36,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831772469] [2023-04-02 01:28:36,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831772469] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:36,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820940459] [2023-04-02 01:28:36,352 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 01:28:36,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:36,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:36,357 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:36,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-04-02 01:28:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:36,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 60 conjunts are in the unsatisfiable core [2023-04-02 01:28:36,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:36,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-04-02 01:28:36,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-04-02 01:28:37,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820940459] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:37,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:37,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 63 [2023-04-02 01:28:37,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041460261] [2023-04-02 01:28:37,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:37,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-04-02 01:28:37,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:37,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-04-02 01:28:37,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=964, Invalid=2942, Unknown=0, NotChecked=0, Total=3906 [2023-04-02 01:28:37,566 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand has 63 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 62 states have internal predecessors, (99), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-02 01:28:38,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:38,997 INFO L93 Difference]: Finished difference Result 336 states and 366 transitions. [2023-04-02 01:28:38,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-04-02 01:28:38,998 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 62 states have internal predecessors, (99), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 237 [2023-04-02 01:28:38,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:38,999 INFO L225 Difference]: With dead ends: 336 [2023-04-02 01:28:38,999 INFO L226 Difference]: Without dead ends: 241 [2023-04-02 01:28:39,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 473 SyntacticMatches, 58 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5290 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2943, Invalid=11819, Unknown=0, NotChecked=0, Total=14762 [2023-04-02 01:28:39,000 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 52 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:39,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 52 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:28:39,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-04-02 01:28:39,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2023-04-02 01:28:39,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 179 states have (on average 1.011173184357542) internal successors, (181), 180 states have internal predecessors, (181), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-04-02 01:28:39,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2023-04-02 01:28:39,026 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 237 [2023-04-02 01:28:39,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:39,026 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2023-04-02 01:28:39,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 62 states have internal predecessors, (99), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-02 01:28:39,026 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2023-04-02 01:28:39,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-04-02 01:28:39,027 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:39,028 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:39,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2023-04-02 01:28:39,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:39,233 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:39,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:39,233 INFO L85 PathProgramCache]: Analyzing trace with hash 303138445, now seen corresponding path program 56 times [2023-04-02 01:28:39,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:39,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685912972] [2023-04-02 01:28:39,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:39,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 01:28:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 01:28:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 01:28:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 01:28:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 01:28:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 01:28:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 01:28:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 01:28:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 01:28:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 01:28:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 01:28:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 01:28:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 01:28:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-04-02 01:28:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-04-02 01:28:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-04-02 01:28:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-04-02 01:28:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-02 01:28:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-04-02 01:28:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-04-02 01:28:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-02 01:28:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-04-02 01:28:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-04-02 01:28:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-02 01:28:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-04-02 01:28:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-04-02 01:28:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-04-02 01:28:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-04-02 01:28:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:39,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 462 proven. 1219 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-04-02 01:28:39,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:39,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685912972] [2023-04-02 01:28:39,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685912972] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:39,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994351374] [2023-04-02 01:28:39,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:28:39,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:39,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:39,971 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:39,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-04-02 01:28:40,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:28:40,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:28:40,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 64 conjunts are in the unsatisfiable core [2023-04-02 01:28:40,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:40,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-04-02 01:28:40,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:40,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-04-02 01:28:40,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994351374] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:40,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:40,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 38 [2023-04-02 01:28:40,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156423030] [2023-04-02 01:28:40,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:40,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-04-02 01:28:40,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:40,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-04-02 01:28:40,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=895, Unknown=0, NotChecked=0, Total=1406 [2023-04-02 01:28:40,919 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand has 38 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 35 states have internal predecessors, (102), 30 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-02 01:28:41,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:41,467 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2023-04-02 01:28:41,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-04-02 01:28:41,467 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 35 states have internal predecessors, (102), 30 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 238 [2023-04-02 01:28:41,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:41,468 INFO L225 Difference]: With dead ends: 254 [2023-04-02 01:28:41,468 INFO L226 Difference]: Without dead ends: 252 [2023-04-02 01:28:41,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 502 SyntacticMatches, 58 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1525, Invalid=3587, Unknown=0, NotChecked=0, Total=5112 [2023-04-02 01:28:41,469 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 85 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:41,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 42 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:28:41,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-04-02 01:28:41,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 248. [2023-04-02 01:28:41,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 184 states have (on average 1.0108695652173914) internal successors, (186), 185 states have internal predecessors, (186), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-04-02 01:28:41,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2023-04-02 01:28:41,496 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 238 [2023-04-02 01:28:41,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:41,497 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2023-04-02 01:28:41,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 35 states have internal predecessors, (102), 30 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-02 01:28:41,497 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2023-04-02 01:28:41,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-04-02 01:28:41,498 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:41,498 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:41,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-04-02 01:28:41,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-04-02 01:28:41,704 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:41,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:41,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1098729274, now seen corresponding path program 57 times [2023-04-02 01:28:41,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:41,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687847123] [2023-04-02 01:28:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:41,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:42,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:42,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 01:28:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:42,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 01:28:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 01:28:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:42,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 01:28:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:42,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 01:28:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:42,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 01:28:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:42,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 01:28:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:42,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 01:28:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:42,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 01:28:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:42,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 01:28:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 01:28:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:42,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 01:28:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:42,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 01:28:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-04-02 01:28:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:43,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-04-02 01:28:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:43,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-04-02 01:28:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:43,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-04-02 01:28:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:43,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-02 01:28:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:43,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-04-02 01:28:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:43,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-04-02 01:28:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:43,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-02 01:28:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:43,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-04-02 01:28:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:43,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-04-02 01:28:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:43,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-02 01:28:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:43,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-04-02 01:28:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:43,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-04-02 01:28:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:43,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-04-02 01:28:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:43,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-04-02 01:28:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:43,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-04-02 01:28:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-04-02 01:28:43,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:43,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687847123] [2023-04-02 01:28:43,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687847123] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:43,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854843036] [2023-04-02 01:28:43,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:28:43,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:43,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:43,017 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:43,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-04-02 01:28:43,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2023-04-02 01:28:43,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:28:43,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 62 conjunts are in the unsatisfiable core [2023-04-02 01:28:43,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:43,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-04-02 01:28:43,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-04-02 01:28:44,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854843036] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:44,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:44,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63, 63] total 65 [2023-04-02 01:28:44,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776277137] [2023-04-02 01:28:44,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:44,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-04-02 01:28:44,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:44,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-04-02 01:28:44,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2023-04-02 01:28:44,301 INFO L87 Difference]: Start difference. First operand 248 states and 249 transitions. Second operand has 65 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 64 states have internal predecessors, (102), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-04-02 01:28:45,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:45,839 INFO L93 Difference]: Finished difference Result 347 states and 378 transitions. [2023-04-02 01:28:45,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-04-02 01:28:45,840 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 64 states have internal predecessors, (102), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 245 [2023-04-02 01:28:45,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:45,841 INFO L225 Difference]: With dead ends: 347 [2023-04-02 01:28:45,841 INFO L226 Difference]: Without dead ends: 249 [2023-04-02 01:28:45,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 489 SyntacticMatches, 60 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5653 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3134, Invalid=12616, Unknown=0, NotChecked=0, Total=15750 [2023-04-02 01:28:45,843 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 53 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:45,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 57 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 01:28:45,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-04-02 01:28:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2023-04-02 01:28:45,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 185 states have (on average 1.0108108108108107) internal successors, (187), 186 states have internal predecessors, (187), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-04-02 01:28:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2023-04-02 01:28:45,876 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 245 [2023-04-02 01:28:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:45,876 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2023-04-02 01:28:45,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 64 states have internal predecessors, (102), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-04-02 01:28:45,876 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2023-04-02 01:28:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-04-02 01:28:45,878 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:45,878 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:45,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2023-04-02 01:28:46,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-04-02 01:28:46,084 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:46,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:46,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1164878380, now seen corresponding path program 58 times [2023-04-02 01:28:46,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:46,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773393617] [2023-04-02 01:28:46,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:46,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 01:28:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 01:28:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 01:28:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 01:28:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 01:28:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 01:28:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 01:28:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 01:28:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 01:28:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 01:28:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 01:28:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 01:28:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 01:28:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 01:28:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-02 01:28:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-04-02 01:28:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-04-02 01:28:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-04-02 01:28:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-04-02 01:28:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-04-02 01:28:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-04-02 01:28:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-04-02 01:28:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-04-02 01:28:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-04-02 01:28:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-04-02 01:28:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-04-02 01:28:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-02 01:28:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-04-02 01:28:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-04-02 01:28:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 493 proven. 1306 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-04-02 01:28:46,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:46,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773393617] [2023-04-02 01:28:46,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773393617] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:46,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170965079] [2023-04-02 01:28:46,916 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 01:28:46,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:46,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:46,917 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:46,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-04-02 01:28:47,027 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 01:28:47,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:28:47,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 66 conjunts are in the unsatisfiable core [2023-04-02 01:28:47,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:47,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-04-02 01:28:47,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:47,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-04-02 01:28:47,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170965079] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:47,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:47,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 39 [2023-04-02 01:28:47,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932056339] [2023-04-02 01:28:47,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:47,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-04-02 01:28:47,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:47,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-04-02 01:28:47,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=939, Unknown=0, NotChecked=0, Total=1482 [2023-04-02 01:28:47,976 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand has 39 states, 39 states have (on average 2.6923076923076925) internal successors, (105), 36 states have internal predecessors, (105), 31 states have call successors, (34), 4 states have call predecessors, (34), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-04-02 01:28:48,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:48,555 INFO L93 Difference]: Finished difference Result 262 states and 264 transitions. [2023-04-02 01:28:48,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-02 01:28:48,555 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.6923076923076925) internal successors, (105), 36 states have internal predecessors, (105), 31 states have call successors, (34), 4 states have call predecessors, (34), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 246 [2023-04-02 01:28:48,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:48,556 INFO L225 Difference]: With dead ends: 262 [2023-04-02 01:28:48,556 INFO L226 Difference]: Without dead ends: 260 [2023-04-02 01:28:48,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 519 SyntacticMatches, 60 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1621, Invalid=3781, Unknown=0, NotChecked=0, Total=5402 [2023-04-02 01:28:48,558 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 87 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:48,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 37 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:28:48,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-04-02 01:28:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 256. [2023-04-02 01:28:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 191 states have internal predecessors, (192), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-04-02 01:28:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2023-04-02 01:28:48,603 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 246 [2023-04-02 01:28:48,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:48,603 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2023-04-02 01:28:48,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.6923076923076925) internal successors, (105), 36 states have internal predecessors, (105), 31 states have call successors, (34), 4 states have call predecessors, (34), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-04-02 01:28:48,603 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2023-04-02 01:28:48,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-04-02 01:28:48,605 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:48,605 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:48,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2023-04-02 01:28:48,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-04-02 01:28:48,811 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:48,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:48,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1122231225, now seen corresponding path program 59 times [2023-04-02 01:28:48,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:48,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826896408] [2023-04-02 01:28:48,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:48,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 01:28:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 01:28:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 01:28:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 01:28:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 01:28:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 01:28:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 01:28:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 01:28:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 01:28:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 01:28:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 01:28:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 01:28:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 01:28:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 01:28:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-02 01:28:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-04-02 01:28:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-04-02 01:28:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-04-02 01:28:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-04-02 01:28:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-04-02 01:28:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-04-02 01:28:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-04-02 01:28:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-04-02 01:28:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-04-02 01:28:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-04-02 01:28:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-04-02 01:28:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-02 01:28:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-04-02 01:28:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-04-02 01:28:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-04-02 01:28:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-04-02 01:28:50,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:50,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826896408] [2023-04-02 01:28:50,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826896408] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:50,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984971671] [2023-04-02 01:28:50,201 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-02 01:28:50,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:50,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:50,202 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:50,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-04-02 01:28:50,312 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2023-04-02 01:28:50,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:28:50,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 64 conjunts are in the unsatisfiable core [2023-04-02 01:28:50,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-04-02 01:28:50,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-04-02 01:28:51,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984971671] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:51,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:51,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65, 65] total 67 [2023-04-02 01:28:51,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432988199] [2023-04-02 01:28:51,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:51,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-04-02 01:28:51,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:51,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-04-02 01:28:51,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1092, Invalid=3330, Unknown=0, NotChecked=0, Total=4422 [2023-04-02 01:28:51,550 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 67 states, 67 states have (on average 1.5671641791044777) internal successors, (105), 66 states have internal predecessors, (105), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-04-02 01:28:53,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:53,302 INFO L93 Difference]: Finished difference Result 358 states and 390 transitions. [2023-04-02 01:28:53,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-04-02 01:28:53,302 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.5671641791044777) internal successors, (105), 66 states have internal predecessors, (105), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 253 [2023-04-02 01:28:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:53,303 INFO L225 Difference]: With dead ends: 358 [2023-04-02 01:28:53,303 INFO L226 Difference]: Without dead ends: 257 [2023-04-02 01:28:53,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 505 SyntacticMatches, 62 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6028 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3331, Invalid=13439, Unknown=0, NotChecked=0, Total=16770 [2023-04-02 01:28:53,304 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 54 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:53,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 67 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 01:28:53,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-04-02 01:28:53,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2023-04-02 01:28:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 191 states have (on average 1.0104712041884816) internal successors, (193), 192 states have internal predecessors, (193), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-04-02 01:28:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2023-04-02 01:28:53,343 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 253 [2023-04-02 01:28:53,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:53,343 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2023-04-02 01:28:53,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.5671641791044777) internal successors, (105), 66 states have internal predecessors, (105), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-04-02 01:28:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2023-04-02 01:28:53,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-04-02 01:28:53,344 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:53,344 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:53,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2023-04-02 01:28:53,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:53,551 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:53,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:53,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2058141779, now seen corresponding path program 60 times [2023-04-02 01:28:53,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:53,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047682407] [2023-04-02 01:28:53,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:53,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 01:28:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 01:28:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 01:28:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 01:28:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 01:28:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 01:28:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 01:28:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 01:28:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-04-02 01:28:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 01:28:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 01:28:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 01:28:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 01:28:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 01:28:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 01:28:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-04-02 01:28:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-02 01:28:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-04-02 01:28:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-04-02 01:28:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-04-02 01:28:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-04-02 01:28:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-04-02 01:28:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-04-02 01:28:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-04-02 01:28:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-04-02 01:28:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-04-02 01:28:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-04-02 01:28:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-02 01:28:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-02 01:28:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-04-02 01:28:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 525 proven. 1396 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-04-02 01:28:54,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:54,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047682407] [2023-04-02 01:28:54,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047682407] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:54,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665471807] [2023-04-02 01:28:54,388 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-04-02 01:28:54,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:54,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:54,393 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:54,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-04-02 01:28:54,527 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2023-04-02 01:28:54,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:28:54,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 68 conjunts are in the unsatisfiable core [2023-04-02 01:28:54,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-04-02 01:28:54,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-04-02 01:28:55,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665471807] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:55,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:55,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 40 [2023-04-02 01:28:55,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989920269] [2023-04-02 01:28:55,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:55,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-04-02 01:28:55,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:55,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-04-02 01:28:55,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=576, Invalid=984, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 01:28:55,493 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand has 40 states, 40 states have (on average 2.7) internal successors, (108), 37 states have internal predecessors, (108), 32 states have call successors, (35), 4 states have call predecessors, (35), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-04-02 01:28:56,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:56,082 INFO L93 Difference]: Finished difference Result 270 states and 272 transitions. [2023-04-02 01:28:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-04-02 01:28:56,082 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.7) internal successors, (108), 37 states have internal predecessors, (108), 32 states have call successors, (35), 4 states have call predecessors, (35), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 254 [2023-04-02 01:28:56,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:56,084 INFO L225 Difference]: With dead ends: 270 [2023-04-02 01:28:56,084 INFO L226 Difference]: Without dead ends: 268 [2023-04-02 01:28:56,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 536 SyntacticMatches, 62 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2174 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1720, Invalid=3980, Unknown=0, NotChecked=0, Total=5700 [2023-04-02 01:28:56,085 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 92 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:56,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 32 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:28:56,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-04-02 01:28:56,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2023-04-02 01:28:56,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 196 states have (on average 1.010204081632653) internal successors, (198), 197 states have internal predecessors, (198), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-04-02 01:28:56,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2023-04-02 01:28:56,126 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 254 [2023-04-02 01:28:56,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:56,127 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2023-04-02 01:28:56,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.7) internal successors, (108), 37 states have internal predecessors, (108), 32 states have call successors, (35), 4 states have call predecessors, (35), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-04-02 01:28:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2023-04-02 01:28:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-04-02 01:28:56,128 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:56,128 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:56,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2023-04-02 01:28:56,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:56,328 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:56,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:56,329 INFO L85 PathProgramCache]: Analyzing trace with hash 95714214, now seen corresponding path program 61 times [2023-04-02 01:28:56,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:56,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021338220] [2023-04-02 01:28:56,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:56,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 01:28:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 01:28:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 01:28:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 01:28:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 01:28:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 01:28:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 01:28:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 01:28:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-04-02 01:28:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 01:28:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 01:28:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 01:28:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 01:28:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 01:28:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 01:28:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-04-02 01:28:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-02 01:28:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-04-02 01:28:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-04-02 01:28:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-04-02 01:28:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-04-02 01:28:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-04-02 01:28:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-04-02 01:28:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-04-02 01:28:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-04-02 01:28:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-04-02 01:28:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-04-02 01:28:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-02 01:28:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-02 01:28:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-04-02 01:28:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-04-02 01:28:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-04-02 01:28:57,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:57,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021338220] [2023-04-02 01:28:57,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021338220] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:57,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977299784] [2023-04-02 01:28:57,803 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 01:28:57,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:57,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:57,804 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:28:57,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-04-02 01:28:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 66 conjunts are in the unsatisfiable core [2023-04-02 01:28:57,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:58,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-04-02 01:28:58,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-04-02 01:28:59,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977299784] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:59,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:59,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 67] total 69 [2023-04-02 01:28:59,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050688326] [2023-04-02 01:28:59,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:59,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-04-02 01:28:59,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:59,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-04-02 01:28:59,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1159, Invalid=3533, Unknown=0, NotChecked=0, Total=4692 [2023-04-02 01:28:59,190 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand has 69 states, 69 states have (on average 1.565217391304348) internal successors, (108), 68 states have internal predecessors, (108), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-04-02 01:29:00,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:29:00,965 INFO L93 Difference]: Finished difference Result 369 states and 402 transitions. [2023-04-02 01:29:00,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-04-02 01:29:00,965 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.565217391304348) internal successors, (108), 68 states have internal predecessors, (108), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 261 [2023-04-02 01:29:00,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:29:00,966 INFO L225 Difference]: With dead ends: 369 [2023-04-02 01:29:00,966 INFO L226 Difference]: Without dead ends: 265 [2023-04-02 01:29:00,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 521 SyntacticMatches, 64 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6415 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3534, Invalid=14288, Unknown=0, NotChecked=0, Total=17822 [2023-04-02 01:29:00,969 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 55 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 01:29:00,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 62 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1502 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 01:29:00,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-04-02 01:29:00,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2023-04-02 01:29:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 197 states have (on average 1.0101522842639594) internal successors, (199), 198 states have internal predecessors, (199), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-04-02 01:29:00,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2023-04-02 01:29:00,999 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 261 [2023-04-02 01:29:00,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:29:00,999 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2023-04-02 01:29:00,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.565217391304348) internal successors, (108), 68 states have internal predecessors, (108), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-04-02 01:29:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2023-04-02 01:29:01,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-04-02 01:29:01,000 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:29:01,000 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:29:01,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-04-02 01:29:01,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:01,201 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:29:01,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:29:01,201 INFO L85 PathProgramCache]: Analyzing trace with hash 358406412, now seen corresponding path program 62 times [2023-04-02 01:29:01,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:29:01,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579259782] [2023-04-02 01:29:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:29:01,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:29:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:29:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 01:29:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 01:29:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 01:29:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 01:29:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 01:29:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 01:29:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 01:29:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 01:29:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 01:29:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 01:29:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 01:29:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-02 01:29:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 01:29:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-04-02 01:29:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-02 01:29:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-04-02 01:29:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-02 01:29:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-04-02 01:29:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-04-02 01:29:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-04-02 01:29:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-04-02 01:29:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-04-02 01:29:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-04-02 01:29:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-04-02 01:29:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-04-02 01:29:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-04-02 01:29:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-04-02 01:29:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-04-02 01:29:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-04-02 01:29:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-04-02 01:29:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-04-02 01:29:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:02,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 558 proven. 1489 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-04-02 01:29:02,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:29:02,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579259782] [2023-04-02 01:29:02,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579259782] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:29:02,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026470266] [2023-04-02 01:29:02,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:29:02,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:02,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:29:02,093 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:29:02,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-04-02 01:29:02,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:29:02,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:29:02,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 70 conjunts are in the unsatisfiable core [2023-04-02 01:29:02,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:29:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-04-02 01:29:02,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:29:03,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-04-02 01:29:03,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026470266] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:29:03,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:29:03,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 41 [2023-04-02 01:29:03,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398186095] [2023-04-02 01:29:03,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:29:03,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-04-02 01:29:03,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:29:03,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-04-02 01:29:03,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=1030, Unknown=0, NotChecked=0, Total=1640 [2023-04-02 01:29:03,217 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand has 41 states, 41 states have (on average 2.707317073170732) internal successors, (111), 38 states have internal predecessors, (111), 33 states have call successors, (36), 4 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-04-02 01:29:03,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:29:03,909 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2023-04-02 01:29:03,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-04-02 01:29:03,910 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.707317073170732) internal successors, (111), 38 states have internal predecessors, (111), 33 states have call successors, (36), 4 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 262 [2023-04-02 01:29:03,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:29:03,912 INFO L225 Difference]: With dead ends: 278 [2023-04-02 01:29:03,912 INFO L226 Difference]: Without dead ends: 276 [2023-04-02 01:29:03,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 553 SyntacticMatches, 64 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2292 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1822, Invalid=4184, Unknown=0, NotChecked=0, Total=6006 [2023-04-02 01:29:03,913 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 89 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:29:03,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 42 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:29:03,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-04-02 01:29:03,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2023-04-02 01:29:03,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 202 states have (on average 1.00990099009901) internal successors, (204), 203 states have internal predecessors, (204), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-04-02 01:29:03,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2023-04-02 01:29:03,959 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 262 [2023-04-02 01:29:03,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:29:03,960 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2023-04-02 01:29:03,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.707317073170732) internal successors, (111), 38 states have internal predecessors, (111), 33 states have call successors, (36), 4 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-04-02 01:29:03,960 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2023-04-02 01:29:03,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-04-02 01:29:03,961 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:29:03,961 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:29:03,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2023-04-02 01:29:04,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2023-04-02 01:29:04,165 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:29:04,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:29:04,165 INFO L85 PathProgramCache]: Analyzing trace with hash 703359335, now seen corresponding path program 63 times [2023-04-02 01:29:04,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:29:04,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570601693] [2023-04-02 01:29:04,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:29:04,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:29:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:29:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 01:29:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 01:29:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 01:29:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 01:29:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 01:29:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 01:29:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 01:29:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 01:29:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 01:29:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 01:29:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 01:29:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-02 01:29:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 01:29:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-04-02 01:29:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-02 01:29:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-04-02 01:29:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-02 01:29:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-04-02 01:29:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-04-02 01:29:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-04-02 01:29:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-04-02 01:29:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-04-02 01:29:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-04-02 01:29:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-04-02 01:29:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-04-02 01:29:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-04-02 01:29:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-04-02 01:29:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-04-02 01:29:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-04-02 01:29:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-04-02 01:29:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-04-02 01:29:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-04-02 01:29:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-04-02 01:29:05,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:29:05,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570601693] [2023-04-02 01:29:05,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570601693] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:29:05,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320771452] [2023-04-02 01:29:05,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:29:05,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:05,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:29:05,723 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:29:05,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-04-02 01:29:05,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2023-04-02 01:29:05,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:29:05,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 68 conjunts are in the unsatisfiable core [2023-04-02 01:29:05,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:29:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-04-02 01:29:05,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:29:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-04-02 01:29:07,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320771452] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:29:07,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:29:07,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69, 69] total 71 [2023-04-02 01:29:07,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022624391] [2023-04-02 01:29:07,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:29:07,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-04-02 01:29:07,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:29:07,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-04-02 01:29:07,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=3742, Unknown=0, NotChecked=0, Total=4970 [2023-04-02 01:29:07,200 INFO L87 Difference]: Start difference. First operand 272 states and 273 transitions. Second operand has 71 states, 71 states have (on average 1.5633802816901408) internal successors, (111), 70 states have internal predecessors, (111), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-04-02 01:29:09,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:29:09,181 INFO L93 Difference]: Finished difference Result 380 states and 414 transitions. [2023-04-02 01:29:09,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-04-02 01:29:09,181 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.5633802816901408) internal successors, (111), 70 states have internal predecessors, (111), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 269 [2023-04-02 01:29:09,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:29:09,182 INFO L225 Difference]: With dead ends: 380 [2023-04-02 01:29:09,183 INFO L226 Difference]: Without dead ends: 273 [2023-04-02 01:29:09,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 537 SyntacticMatches, 66 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6814 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3743, Invalid=15163, Unknown=0, NotChecked=0, Total=18906 [2023-04-02 01:29:09,184 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 56 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 01:29:09,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 57 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 01:29:09,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-04-02 01:29:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-04-02 01:29:09,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 203 states have (on average 1.0098522167487685) internal successors, (205), 204 states have internal predecessors, (205), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-04-02 01:29:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2023-04-02 01:29:09,215 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 269 [2023-04-02 01:29:09,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:29:09,215 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2023-04-02 01:29:09,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.5633802816901408) internal successors, (111), 70 states have internal predecessors, (111), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-04-02 01:29:09,215 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2023-04-02 01:29:09,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-04-02 01:29:09,216 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:29:09,216 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:29:09,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2023-04-02 01:29:09,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:09,422 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:29:09,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:29:09,423 INFO L85 PathProgramCache]: Analyzing trace with hash 19661005, now seen corresponding path program 64 times [2023-04-02 01:29:09,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:29:09,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828245247] [2023-04-02 01:29:09,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:29:09,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:29:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:29:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-02 01:29:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 01:29:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 01:29:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 01:29:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 01:29:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 01:29:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 01:29:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 01:29:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 01:29:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 01:29:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 01:29:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 01:29:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-04-02 01:29:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 01:29:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-02 01:29:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 01:29:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-04-02 01:29:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-02 01:29:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-04-02 01:29:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-04-02 01:29:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-04-02 01:29:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-04-02 01:29:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-04-02 01:29:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-04-02 01:29:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-04-02 01:29:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-02 01:29:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-04-02 01:29:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-04-02 01:29:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-04-02 01:29:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-04-02 01:29:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-04-02 01:29:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-04-02 01:29:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:10,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 592 proven. 1585 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-04-02 01:29:10,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:29:10,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828245247] [2023-04-02 01:29:10,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828245247] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:29:10,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499778472] [2023-04-02 01:29:10,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 01:29:10,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:10,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:29:10,389 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:29:10,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-04-02 01:29:10,513 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 01:29:10,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:29:10,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 72 conjunts are in the unsatisfiable core [2023-04-02 01:29:10,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:29:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-04-02 01:29:10,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:29:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-04-02 01:29:11,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499778472] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:29:11,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:29:11,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 42 [2023-04-02 01:29:11,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338760295] [2023-04-02 01:29:11,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:29:11,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-04-02 01:29:11,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:29:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-04-02 01:29:11,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=1077, Unknown=0, NotChecked=0, Total=1722 [2023-04-02 01:29:11,606 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand has 42 states, 42 states have (on average 2.7142857142857144) internal successors, (114), 39 states have internal predecessors, (114), 34 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-04-02 01:29:12,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:29:12,259 INFO L93 Difference]: Finished difference Result 286 states and 288 transitions. [2023-04-02 01:29:12,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-04-02 01:29:12,260 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.7142857142857144) internal successors, (114), 39 states have internal predecessors, (114), 34 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 270 [2023-04-02 01:29:12,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:29:12,261 INFO L225 Difference]: With dead ends: 286 [2023-04-02 01:29:12,261 INFO L226 Difference]: Without dead ends: 284 [2023-04-02 01:29:12,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 570 SyntacticMatches, 66 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2413 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1927, Invalid=4393, Unknown=0, NotChecked=0, Total=6320 [2023-04-02 01:29:12,261 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 91 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:29:12,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 37 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:29:12,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-04-02 01:29:12,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 280. [2023-04-02 01:29:12,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 209 states have internal predecessors, (210), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2023-04-02 01:29:12,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2023-04-02 01:29:12,290 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 270 [2023-04-02 01:29:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:29:12,290 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2023-04-02 01:29:12,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.7142857142857144) internal successors, (114), 39 states have internal predecessors, (114), 34 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-04-02 01:29:12,290 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2023-04-02 01:29:12,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-04-02 01:29:12,292 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:29:12,292 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:29:12,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2023-04-02 01:29:12,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-04-02 01:29:12,498 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:29:12,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:29:12,498 INFO L85 PathProgramCache]: Analyzing trace with hash -975817082, now seen corresponding path program 65 times [2023-04-02 01:29:12,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:29:12,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762271758] [2023-04-02 01:29:12,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:29:12,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:29:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:29:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-02 01:29:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 01:29:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 01:29:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 01:29:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 01:29:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 01:29:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 01:29:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 01:29:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 01:29:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 01:29:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 01:29:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 01:29:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-04-02 01:29:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 01:29:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-02 01:29:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 01:29:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-04-02 01:29:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-02 01:29:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-04-02 01:29:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-04-02 01:29:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-04-02 01:29:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-04-02 01:29:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-04-02 01:29:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-04-02 01:29:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-04-02 01:29:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-02 01:29:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-04-02 01:29:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-04-02 01:29:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-04-02 01:29:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-04-02 01:29:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-04-02 01:29:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-04-02 01:29:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-04-02 01:29:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:14,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-04-02 01:29:14,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:29:14,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762271758] [2023-04-02 01:29:14,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762271758] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:29:14,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668683962] [2023-04-02 01:29:14,148 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-02 01:29:14,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:14,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:29:14,149 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:29:14,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-04-02 01:29:14,272 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2023-04-02 01:29:14,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:29:14,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 70 conjunts are in the unsatisfiable core [2023-04-02 01:29:14,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:29:14,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-04-02 01:29:14,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:29:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-04-02 01:29:15,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668683962] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:29:15,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:29:15,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 73 [2023-04-02 01:29:15,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152181603] [2023-04-02 01:29:15,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:29:15,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-04-02 01:29:15,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:29:15,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-04-02 01:29:15,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1299, Invalid=3957, Unknown=0, NotChecked=0, Total=5256 [2023-04-02 01:29:15,837 INFO L87 Difference]: Start difference. First operand 280 states and 281 transitions. Second operand has 73 states, 73 states have (on average 1.5616438356164384) internal successors, (114), 72 states have internal predecessors, (114), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-04-02 01:29:17,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:29:17,657 INFO L93 Difference]: Finished difference Result 391 states and 426 transitions. [2023-04-02 01:29:17,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-04-02 01:29:17,658 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.5616438356164384) internal successors, (114), 72 states have internal predecessors, (114), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 277 [2023-04-02 01:29:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:29:17,659 INFO L225 Difference]: With dead ends: 391 [2023-04-02 01:29:17,659 INFO L226 Difference]: Without dead ends: 281 [2023-04-02 01:29:17,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 553 SyntacticMatches, 68 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7225 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3958, Invalid=16064, Unknown=0, NotChecked=0, Total=20022 [2023-04-02 01:29:17,660 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 57 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 01:29:17,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 52 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 01:29:17,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-04-02 01:29:17,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-04-02 01:29:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 209 states have (on average 1.0095693779904307) internal successors, (211), 210 states have internal predecessors, (211), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2023-04-02 01:29:17,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2023-04-02 01:29:17,689 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 277 [2023-04-02 01:29:17,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:29:17,689 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2023-04-02 01:29:17,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.5616438356164384) internal successors, (114), 72 states have internal predecessors, (114), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-04-02 01:29:17,690 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2023-04-02 01:29:17,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-04-02 01:29:17,691 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:29:17,691 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:29:17,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-04-02 01:29:17,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2023-04-02 01:29:17,897 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:29:17,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:29:17,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1590888428, now seen corresponding path program 66 times [2023-04-02 01:29:17,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:29:17,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228908613] [2023-04-02 01:29:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:29:17,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:29:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:29:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 01:29:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 01:29:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 01:29:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 01:29:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 01:29:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 01:29:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 01:29:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 01:29:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 01:29:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 01:29:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 01:29:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 01:29:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 01:29:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-02 01:29:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 01:29:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-04-02 01:29:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-04-02 01:29:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-04-02 01:29:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-04-02 01:29:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-04-02 01:29:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-04-02 01:29:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-04-02 01:29:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-04-02 01:29:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-04-02 01:29:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 01:29:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-04-02 01:29:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-04-02 01:29:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-04-02 01:29:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-04-02 01:29:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-04-02 01:29:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-04-02 01:29:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-04-02 01:29:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-04-02 01:29:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 627 proven. 1684 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-04-02 01:29:18,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:29:18,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228908613] [2023-04-02 01:29:18,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228908613] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:29:18,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685480373] [2023-04-02 01:29:18,903 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-04-02 01:29:18,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:18,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:29:18,904 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:29:18,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-04-02 01:29:19,033 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2023-04-02 01:29:19,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:29:19,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 74 conjunts are in the unsatisfiable core [2023-04-02 01:29:19,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:29:19,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-04-02 01:29:19,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:29:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-04-02 01:29:20,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685480373] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:29:20,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:29:20,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 43 [2023-04-02 01:29:20,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198246773] [2023-04-02 01:29:20,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:29:20,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-04-02 01:29:20,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:29:20,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-04-02 01:29:20,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=1125, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 01:29:20,208 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand has 43 states, 43 states have (on average 2.7209302325581395) internal successors, (117), 40 states have internal predecessors, (117), 35 states have call successors, (38), 4 states have call predecessors, (38), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-04-02 01:29:20,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:29:20,890 INFO L93 Difference]: Finished difference Result 294 states and 296 transitions. [2023-04-02 01:29:20,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-04-02 01:29:20,890 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.7209302325581395) internal successors, (117), 40 states have internal predecessors, (117), 35 states have call successors, (38), 4 states have call predecessors, (38), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 278 [2023-04-02 01:29:20,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:29:20,891 INFO L225 Difference]: With dead ends: 294 [2023-04-02 01:29:20,891 INFO L226 Difference]: Without dead ends: 292 [2023-04-02 01:29:20,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 587 SyntacticMatches, 68 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2537 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2035, Invalid=4607, Unknown=0, NotChecked=0, Total=6642 [2023-04-02 01:29:20,892 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 96 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:29:20,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 42 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:29:20,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-04-02 01:29:20,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 288. [2023-04-02 01:29:20,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 214 states have (on average 1.0093457943925233) internal successors, (216), 215 states have internal predecessors, (216), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-04-02 01:29:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2023-04-02 01:29:20,927 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 278 [2023-04-02 01:29:20,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:29:20,927 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2023-04-02 01:29:20,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.7209302325581395) internal successors, (117), 40 states have internal predecessors, (117), 35 states have call successors, (38), 4 states have call predecessors, (38), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-04-02 01:29:20,928 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2023-04-02 01:29:20,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-04-02 01:29:20,929 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:29:20,929 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:29:20,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2023-04-02 01:29:21,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-04-02 01:29:21,136 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:29:21,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:29:21,136 INFO L85 PathProgramCache]: Analyzing trace with hash -892486009, now seen corresponding path program 67 times [2023-04-02 01:29:21,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:29:21,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804802251] [2023-04-02 01:29:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:29:21,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:29:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:29:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 01:29:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 01:29:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 01:29:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 01:29:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 01:29:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 01:29:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 01:29:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 01:29:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 01:29:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 01:29:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 01:29:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 01:29:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 01:29:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-02 01:29:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 01:29:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-04-02 01:29:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-04-02 01:29:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-04-02 01:29:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-04-02 01:29:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-04-02 01:29:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-04-02 01:29:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-04-02 01:29:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-04-02 01:29:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-04-02 01:29:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 01:29:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-04-02 01:29:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-04-02 01:29:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-04-02 01:29:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-04-02 01:29:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-04-02 01:29:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-04-02 01:29:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-04-02 01:29:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-04-02 01:29:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-04-02 01:29:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-04-02 01:29:22,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:29:22,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804802251] [2023-04-02 01:29:22,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804802251] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:29:22,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367662358] [2023-04-02 01:29:22,878 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 01:29:22,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:22,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:29:22,879 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:29:22,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-04-02 01:29:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:22,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 72 conjunts are in the unsatisfiable core [2023-04-02 01:29:22,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:29:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-04-02 01:29:23,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:29:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-04-02 01:29:24,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367662358] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:29:24,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:29:24,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73, 73] total 75 [2023-04-02 01:29:24,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254489033] [2023-04-02 01:29:24,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:29:24,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-04-02 01:29:24,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:29:24,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-04-02 01:29:24,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1372, Invalid=4178, Unknown=0, NotChecked=0, Total=5550 [2023-04-02 01:29:24,523 INFO L87 Difference]: Start difference. First operand 288 states and 289 transitions. Second operand has 75 states, 75 states have (on average 1.56) internal successors, (117), 74 states have internal predecessors, (117), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-04-02 01:29:26,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:29:26,719 INFO L93 Difference]: Finished difference Result 402 states and 438 transitions. [2023-04-02 01:29:26,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-04-02 01:29:26,720 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.56) internal successors, (117), 74 states have internal predecessors, (117), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 285 [2023-04-02 01:29:26,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:29:26,721 INFO L225 Difference]: With dead ends: 402 [2023-04-02 01:29:26,722 INFO L226 Difference]: Without dead ends: 289 [2023-04-02 01:29:26,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 569 SyntacticMatches, 70 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7648 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4179, Invalid=16991, Unknown=0, NotChecked=0, Total=21170 [2023-04-02 01:29:26,723 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 58 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 01:29:26,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 77 Invalid, 1877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 01:29:26,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-04-02 01:29:26,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-04-02 01:29:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 215 states have (on average 1.0093023255813953) internal successors, (217), 216 states have internal predecessors, (217), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-04-02 01:29:26,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2023-04-02 01:29:26,762 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 285 [2023-04-02 01:29:26,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:29:26,762 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2023-04-02 01:29:26,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.56) internal successors, (117), 74 states have internal predecessors, (117), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-04-02 01:29:26,763 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2023-04-02 01:29:26,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-04-02 01:29:26,764 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:29:26,764 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:29:26,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2023-04-02 01:29:26,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-04-02 01:29:26,971 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:29:26,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:29:26,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1716663827, now seen corresponding path program 68 times [2023-04-02 01:29:26,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:29:26,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027242772] [2023-04-02 01:29:26,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:29:26,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:29:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:29:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 01:29:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 01:29:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 01:29:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 01:29:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 01:29:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 01:29:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 01:29:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-04-02 01:29:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 01:29:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 01:29:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 01:29:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 01:29:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-02 01:29:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 01:29:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 01:29:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-04-02 01:29:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-02 01:29:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-04-02 01:29:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-04-02 01:29:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-04-02 01:29:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-04-02 01:29:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-04-02 01:29:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-04-02 01:29:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-04-02 01:29:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-04-02 01:29:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-04-02 01:29:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-04-02 01:29:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-04-02 01:29:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-04-02 01:29:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-02 01:29:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-04-02 01:29:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-04-02 01:29:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-04-02 01:29:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-04-02 01:29:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 663 proven. 1786 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-04-02 01:29:28,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:29:28,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027242772] [2023-04-02 01:29:28,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027242772] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:29:28,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248615184] [2023-04-02 01:29:28,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:29:28,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:28,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:29:28,073 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:29:28,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-04-02 01:29:28,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:29:28,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:29:28,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 76 conjunts are in the unsatisfiable core [2023-04-02 01:29:28,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:29:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-04-02 01:29:28,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:29:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-04-02 01:29:29,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248615184] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:29:29,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:29:29,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 44 [2023-04-02 01:29:29,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578323521] [2023-04-02 01:29:29,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:29:29,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-04-02 01:29:29,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:29:29,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-04-02 01:29:29,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=718, Invalid=1174, Unknown=0, NotChecked=0, Total=1892 [2023-04-02 01:29:29,427 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand has 44 states, 44 states have (on average 2.727272727272727) internal successors, (120), 41 states have internal predecessors, (120), 36 states have call successors, (39), 4 states have call predecessors, (39), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-04-02 01:29:30,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:29:30,138 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2023-04-02 01:29:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-04-02 01:29:30,138 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.727272727272727) internal successors, (120), 41 states have internal predecessors, (120), 36 states have call successors, (39), 4 states have call predecessors, (39), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 286 [2023-04-02 01:29:30,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:29:30,139 INFO L225 Difference]: With dead ends: 302 [2023-04-02 01:29:30,139 INFO L226 Difference]: Without dead ends: 300 [2023-04-02 01:29:30,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 604 SyntacticMatches, 70 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2664 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2146, Invalid=4826, Unknown=0, NotChecked=0, Total=6972 [2023-04-02 01:29:30,141 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 97 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:29:30,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 52 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:29:30,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-04-02 01:29:30,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 296. [2023-04-02 01:29:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 220 states have (on average 1.009090909090909) internal successors, (222), 221 states have internal predecessors, (222), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2023-04-02 01:29:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2023-04-02 01:29:30,173 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 286 [2023-04-02 01:29:30,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:29:30,173 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2023-04-02 01:29:30,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.727272727272727) internal successors, (120), 41 states have internal predecessors, (120), 36 states have call successors, (39), 4 states have call predecessors, (39), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-04-02 01:29:30,173 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2023-04-02 01:29:30,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-04-02 01:29:30,174 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:29:30,175 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:29:30,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2023-04-02 01:29:30,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:30,375 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:29:30,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:29:30,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1835669146, now seen corresponding path program 69 times [2023-04-02 01:29:30,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:29:30,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542732999] [2023-04-02 01:29:30,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:29:30,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:29:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:29:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 01:29:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 01:29:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 01:29:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 01:29:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 01:29:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 01:29:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 01:29:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-04-02 01:29:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 01:29:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 01:29:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 01:29:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 01:29:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-02 01:29:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 01:29:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 01:29:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-04-02 01:29:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-02 01:29:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-04-02 01:29:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-04-02 01:29:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-04-02 01:29:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-04-02 01:29:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-04-02 01:29:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-04-02 01:29:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-04-02 01:29:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-04-02 01:29:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-04-02 01:29:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-04-02 01:29:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-04-02 01:29:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-04-02 01:29:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-02 01:29:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-04-02 01:29:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-04-02 01:29:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-04-02 01:29:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-04-02 01:29:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-02 01:29:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-04-02 01:29:32,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:29:32,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542732999] [2023-04-02 01:29:32,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542732999] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:29:32,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688625494] [2023-04-02 01:29:32,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:29:32,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:32,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:29:32,219 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:29:32,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-04-02 01:29:32,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2023-04-02 01:29:32,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:29:32,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 74 conjunts are in the unsatisfiable core [2023-04-02 01:29:32,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:29:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-04-02 01:29:32,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:29:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-04-02 01:29:33,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688625494] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:29:33,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:29:33,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75, 75] total 77 [2023-04-02 01:29:33,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882462353] [2023-04-02 01:29:33,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:29:33,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-04-02 01:29:33,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:29:33,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-04-02 01:29:33,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1447, Invalid=4405, Unknown=0, NotChecked=0, Total=5852 [2023-04-02 01:29:33,946 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand has 77 states, 77 states have (on average 1.5584415584415585) internal successors, (120), 76 states have internal predecessors, (120), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-04-02 01:29:35,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:29:35,977 INFO L93 Difference]: Finished difference Result 413 states and 450 transitions. [2023-04-02 01:29:35,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-04-02 01:29:35,977 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.5584415584415585) internal successors, (120), 76 states have internal predecessors, (120), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 293 [2023-04-02 01:29:35,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:29:35,978 INFO L225 Difference]: With dead ends: 413 [2023-04-02 01:29:35,978 INFO L226 Difference]: Without dead ends: 297 [2023-04-02 01:29:35,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 585 SyntacticMatches, 72 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8083 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4406, Invalid=17944, Unknown=0, NotChecked=0, Total=22350 [2023-04-02 01:29:35,980 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 59 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 01:29:35,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 57 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 01:29:35,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-04-02 01:29:36,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2023-04-02 01:29:36,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 221 states have (on average 1.009049773755656) internal successors, (223), 222 states have internal predecessors, (223), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2023-04-02 01:29:36,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2023-04-02 01:29:36,009 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 293 [2023-04-02 01:29:36,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:29:36,010 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2023-04-02 01:29:36,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.5584415584415585) internal successors, (120), 76 states have internal predecessors, (120), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-04-02 01:29:36,010 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2023-04-02 01:29:36,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-02 01:29:36,011 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:29:36,011 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:29:36,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2023-04-02 01:29:36,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:36,211 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:29:36,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:29:36,212 INFO L85 PathProgramCache]: Analyzing trace with hash -2055262516, now seen corresponding path program 70 times [2023-04-02 01:29:36,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:29:36,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926029107] [2023-04-02 01:29:36,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:29:36,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:29:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:29:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 01:29:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 01:29:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 01:29:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 01:29:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 01:29:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 01:29:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 01:29:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 01:29:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 01:29:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 01:29:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 01:29:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 01:29:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-04-02 01:29:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-04-02 01:29:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-04-02 01:29:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-04-02 01:29:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-02 01:29:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-04-02 01:29:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-04-02 01:29:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-02 01:29:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-04-02 01:29:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-04-02 01:29:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-02 01:29:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-04-02 01:29:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-04-02 01:29:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-04-02 01:29:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-04-02 01:29:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-04-02 01:29:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-04-02 01:29:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-04-02 01:29:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-04-02 01:29:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-04-02 01:29:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-04-02 01:29:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-04-02 01:29:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-04-02 01:29:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:37,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 700 proven. 1891 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-04-02 01:29:37,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:29:37,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926029107] [2023-04-02 01:29:37,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926029107] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:29:37,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089583746] [2023-04-02 01:29:37,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 01:29:37,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:37,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:29:37,326 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:29:37,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-04-02 01:29:37,432 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 01:29:37,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:29:37,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 78 conjunts are in the unsatisfiable core [2023-04-02 01:29:37,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:29:37,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-04-02 01:29:37,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:29:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-04-02 01:29:38,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089583746] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:29:38,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:29:38,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 45 [2023-04-02 01:29:38,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952752908] [2023-04-02 01:29:38,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:29:38,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-04-02 01:29:38,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:29:38,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-04-02 01:29:38,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=756, Invalid=1224, Unknown=0, NotChecked=0, Total=1980 [2023-04-02 01:29:38,686 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 42 states have internal predecessors, (123), 37 states have call successors, (40), 4 states have call predecessors, (40), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-04-02 01:29:39,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:29:39,411 INFO L93 Difference]: Finished difference Result 310 states and 312 transitions. [2023-04-02 01:29:39,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-04-02 01:29:39,412 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 42 states have internal predecessors, (123), 37 states have call successors, (40), 4 states have call predecessors, (40), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 294 [2023-04-02 01:29:39,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:29:39,413 INFO L225 Difference]: With dead ends: 310 [2023-04-02 01:29:39,413 INFO L226 Difference]: Without dead ends: 308 [2023-04-02 01:29:39,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 621 SyntacticMatches, 72 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2794 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2260, Invalid=5050, Unknown=0, NotChecked=0, Total=7310 [2023-04-02 01:29:39,414 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 100 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:29:39,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 32 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:29:39,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-04-02 01:29:39,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2023-04-02 01:29:39,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 226 states have (on average 1.008849557522124) internal successors, (228), 227 states have internal predecessors, (228), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-04-02 01:29:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2023-04-02 01:29:39,450 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 294 [2023-04-02 01:29:39,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:29:39,450 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2023-04-02 01:29:39,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 42 states have internal predecessors, (123), 37 states have call successors, (40), 4 states have call predecessors, (40), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-04-02 01:29:39,451 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2023-04-02 01:29:39,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-04-02 01:29:39,452 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:29:39,452 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:29:39,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2023-04-02 01:29:39,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:39,659 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:29:39,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:29:39,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1548884903, now seen corresponding path program 71 times [2023-04-02 01:29:39,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:29:39,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803820656] [2023-04-02 01:29:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:29:39,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:29:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:29:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 01:29:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 01:29:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 01:29:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 01:29:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 01:29:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 01:29:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 01:29:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 01:29:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 01:29:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 01:29:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 01:29:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 01:29:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-04-02 01:29:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-04-02 01:29:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-04-02 01:29:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-04-02 01:29:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-02 01:29:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-04-02 01:29:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-04-02 01:29:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-02 01:29:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-04-02 01:29:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-04-02 01:29:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-04-02 01:29:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-04-02 01:29:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-04-02 01:29:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-04-02 01:29:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-04-02 01:29:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-04-02 01:29:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-04-02 01:29:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-04-02 01:29:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-04-02 01:29:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-04-02 01:29:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-04-02 01:29:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-04-02 01:29:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-04-02 01:29:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2023-04-02 01:29:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-04-02 01:29:41,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:29:41,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803820656] [2023-04-02 01:29:41,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803820656] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:29:41,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518093405] [2023-04-02 01:29:41,605 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-02 01:29:41,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:41,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:29:41,606 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:29:41,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-04-02 01:29:41,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2023-04-02 01:29:41,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:29:41,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 76 conjunts are in the unsatisfiable core [2023-04-02 01:29:41,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:29:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-04-02 01:29:41,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:29:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-04-02 01:29:43,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518093405] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:29:43,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:29:43,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77, 77] total 79 [2023-04-02 01:29:43,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563609798] [2023-04-02 01:29:43,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:29:43,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-04-02 01:29:43,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:29:43,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-04-02 01:29:43,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1524, Invalid=4638, Unknown=0, NotChecked=0, Total=6162 [2023-04-02 01:29:43,434 INFO L87 Difference]: Start difference. First operand 304 states and 305 transitions. Second operand has 79 states, 79 states have (on average 1.5569620253164558) internal successors, (123), 78 states have internal predecessors, (123), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-04-02 01:29:45,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:29:45,693 INFO L93 Difference]: Finished difference Result 424 states and 462 transitions. [2023-04-02 01:29:45,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-04-02 01:29:45,693 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.5569620253164558) internal successors, (123), 78 states have internal predecessors, (123), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 301 [2023-04-02 01:29:45,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:29:45,694 INFO L225 Difference]: With dead ends: 424 [2023-04-02 01:29:45,694 INFO L226 Difference]: Without dead ends: 305 [2023-04-02 01:29:45,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 601 SyntacticMatches, 74 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8530 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4639, Invalid=18923, Unknown=0, NotChecked=0, Total=23562 [2023-04-02 01:29:45,697 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 60 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 01:29:45,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 62 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 01:29:45,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-04-02 01:29:45,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2023-04-02 01:29:45,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 227 states have (on average 1.0088105726872247) internal successors, (229), 228 states have internal predecessors, (229), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-04-02 01:29:45,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2023-04-02 01:29:45,743 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 301 [2023-04-02 01:29:45,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:29:45,743 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2023-04-02 01:29:45,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.5569620253164558) internal successors, (123), 78 states have internal predecessors, (123), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-04-02 01:29:45,744 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2023-04-02 01:29:45,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-04-02 01:29:45,745 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:29:45,746 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:29:45,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2023-04-02 01:29:45,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2023-04-02 01:29:45,952 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:29:45,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:29:45,953 INFO L85 PathProgramCache]: Analyzing trace with hash -613770483, now seen corresponding path program 72 times [2023-04-02 01:29:45,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:29:45,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814620292] [2023-04-02 01:29:45,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:29:45,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:29:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:29:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 01:29:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 01:29:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 01:29:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 01:29:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 01:29:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 01:29:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 01:29:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 01:29:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 01:29:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 01:29:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 01:29:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 01:29:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 01:29:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-02 01:29:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-04-02 01:29:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-04-02 01:29:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-04-02 01:29:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-04-02 01:29:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-04-02 01:29:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-04-02 01:29:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-04-02 01:29:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-04-02 01:29:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-04-02 01:29:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-04-02 01:29:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-04-02 01:29:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-02 01:29:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-04-02 01:29:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-04-02 01:29:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-04-02 01:29:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-04-02 01:29:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-04-02 01:29:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2023-04-02 01:29:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-04-02 01:29:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-04-02 01:29:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2023-04-02 01:29:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-04-02 01:29:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:47,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 738 proven. 1999 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-04-02 01:29:47,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:29:47,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814620292] [2023-04-02 01:29:47,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814620292] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:29:47,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693001929] [2023-04-02 01:29:47,116 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-04-02 01:29:47,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:47,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:29:47,117 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:29:47,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-04-02 01:29:47,259 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2023-04-02 01:29:47,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:29:47,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 80 conjunts are in the unsatisfiable core [2023-04-02 01:29:47,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:29:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-04-02 01:29:47,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:29:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-04-02 01:29:48,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693001929] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:29:48,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:29:48,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 42] total 46 [2023-04-02 01:29:48,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790457428] [2023-04-02 01:29:48,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:29:48,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-04-02 01:29:48,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:29:48,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-04-02 01:29:48,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=795, Invalid=1275, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 01:29:48,616 INFO L87 Difference]: Start difference. First operand 305 states and 306 transitions. Second operand has 46 states, 46 states have (on average 2.739130434782609) internal successors, (126), 43 states have internal predecessors, (126), 38 states have call successors, (41), 4 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-04-02 01:29:49,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:29:49,369 INFO L93 Difference]: Finished difference Result 318 states and 320 transitions. [2023-04-02 01:29:49,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-04-02 01:29:49,369 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.739130434782609) internal successors, (126), 43 states have internal predecessors, (126), 38 states have call successors, (41), 4 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 302 [2023-04-02 01:29:49,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:29:49,370 INFO L225 Difference]: With dead ends: 318 [2023-04-02 01:29:49,370 INFO L226 Difference]: Without dead ends: 316 [2023-04-02 01:29:49,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 638 SyntacticMatches, 74 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2927 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2377, Invalid=5279, Unknown=0, NotChecked=0, Total=7656 [2023-04-02 01:29:49,371 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 102 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:29:49,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 37 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:29:49,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-04-02 01:29:49,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 312. [2023-04-02 01:29:49,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 233 states have internal predecessors, (234), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2023-04-02 01:29:49,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2023-04-02 01:29:49,407 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 302 [2023-04-02 01:29:49,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:29:49,407 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2023-04-02 01:29:49,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.739130434782609) internal successors, (126), 43 states have internal predecessors, (126), 38 states have call successors, (41), 4 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-04-02 01:29:49,408 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2023-04-02 01:29:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2023-04-02 01:29:49,409 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:29:49,409 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:29:49,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2023-04-02 01:29:49,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:49,609 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:29:49,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:29:49,610 INFO L85 PathProgramCache]: Analyzing trace with hash -148794298, now seen corresponding path program 73 times [2023-04-02 01:29:49,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:29:49,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133156522] [2023-04-02 01:29:49,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:29:49,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:29:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:29:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 01:29:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 01:29:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 01:29:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 01:29:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 01:29:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 01:29:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 01:29:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 01:29:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 01:29:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 01:29:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 01:29:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-04-02 01:29:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 01:29:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-02 01:29:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-04-02 01:29:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-04-02 01:29:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-04-02 01:29:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-04-02 01:29:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-04-02 01:29:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-04-02 01:29:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-04-02 01:29:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-04-02 01:29:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-04-02 01:29:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-04-02 01:29:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-04-02 01:29:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-02 01:29:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-04-02 01:29:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-04-02 01:29:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-04-02 01:29:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-04-02 01:29:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-04-02 01:29:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2023-04-02 01:29:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-04-02 01:29:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-04-02 01:29:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2023-04-02 01:29:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-04-02 01:29:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2023-04-02 01:29:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-04-02 01:29:51,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:29:51,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133156522] [2023-04-02 01:29:51,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133156522] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:29:51,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451924828] [2023-04-02 01:29:51,688 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 01:29:51,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:51,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:29:51,689 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:29:51,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-04-02 01:29:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:51,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 78 conjunts are in the unsatisfiable core [2023-04-02 01:29:51,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:29:51,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-04-02 01:29:51,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:29:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-04-02 01:29:53,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451924828] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:29:53,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:29:53,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79, 79] total 81 [2023-04-02 01:29:53,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554184454] [2023-04-02 01:29:53,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:29:53,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-04-02 01:29:53,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:29:53,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-04-02 01:29:53,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1603, Invalid=4877, Unknown=0, NotChecked=0, Total=6480 [2023-04-02 01:29:53,556 INFO L87 Difference]: Start difference. First operand 312 states and 313 transitions. Second operand has 81 states, 81 states have (on average 1.5555555555555556) internal successors, (126), 80 states have internal predecessors, (126), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-04-02 01:29:55,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:29:55,854 INFO L93 Difference]: Finished difference Result 435 states and 474 transitions. [2023-04-02 01:29:55,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-04-02 01:29:55,855 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.5555555555555556) internal successors, (126), 80 states have internal predecessors, (126), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 309 [2023-04-02 01:29:55,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:29:55,856 INFO L225 Difference]: With dead ends: 435 [2023-04-02 01:29:55,856 INFO L226 Difference]: Without dead ends: 313 [2023-04-02 01:29:55,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 617 SyntacticMatches, 76 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8989 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4878, Invalid=19928, Unknown=0, NotChecked=0, Total=24806 [2023-04-02 01:29:55,859 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 61 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 01:29:55,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 57 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 01:29:55,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-04-02 01:29:55,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2023-04-02 01:29:55,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 233 states have (on average 1.0085836909871244) internal successors, (235), 234 states have internal predecessors, (235), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2023-04-02 01:29:55,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2023-04-02 01:29:55,930 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 309 [2023-04-02 01:29:55,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:29:55,930 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2023-04-02 01:29:55,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.5555555555555556) internal successors, (126), 80 states have internal predecessors, (126), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-04-02 01:29:55,930 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2023-04-02 01:29:55,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-04-02 01:29:55,932 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:29:55,932 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:29:55,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2023-04-02 01:29:56,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:56,139 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:29:56,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:29:56,139 INFO L85 PathProgramCache]: Analyzing trace with hash -460370516, now seen corresponding path program 74 times [2023-04-02 01:29:56,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:29:56,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463863289] [2023-04-02 01:29:56,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:29:56,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:29:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:29:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 01:29:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 01:29:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 01:29:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 01:29:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 01:29:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 01:29:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 01:29:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-04-02 01:29:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 01:29:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 01:29:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 01:29:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 01:29:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 01:29:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 01:29:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-04-02 01:29:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-02 01:29:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-04-02 01:29:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-04-02 01:29:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-04-02 01:29:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-04-02 01:29:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-04-02 01:29:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-04-02 01:29:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-04-02 01:29:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-04-02 01:29:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-04-02 01:29:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-04-02 01:29:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-02 01:29:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-02 01:29:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-04-02 01:29:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-04-02 01:29:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-02 01:29:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-04-02 01:29:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2023-04-02 01:29:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-04-02 01:29:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2023-04-02 01:29:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2023-04-02 01:29:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-04-02 01:29:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:29:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 777 proven. 2110 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-04-02 01:29:57,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:29:57,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463863289] [2023-04-02 01:29:57,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463863289] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:29:57,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359699098] [2023-04-02 01:29:57,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:29:57,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:29:57,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:29:57,461 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:29:57,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-04-02 01:29:57,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:29:57,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:29:57,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 82 conjunts are in the unsatisfiable core [2023-04-02 01:29:57,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:29:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-04-02 01:29:57,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:29:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2023-04-02 01:29:58,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359699098] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:29:58,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:29:58,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 47 [2023-04-02 01:29:58,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462855744] [2023-04-02 01:29:58,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:29:58,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-04-02 01:29:58,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:29:58,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-04-02 01:29:58,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=835, Invalid=1327, Unknown=0, NotChecked=0, Total=2162 [2023-04-02 01:29:58,933 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand has 47 states, 47 states have (on average 2.74468085106383) internal successors, (129), 44 states have internal predecessors, (129), 39 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-04-02 01:29:59,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:29:59,710 INFO L93 Difference]: Finished difference Result 326 states and 328 transitions. [2023-04-02 01:29:59,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-04-02 01:29:59,711 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.74468085106383) internal successors, (129), 44 states have internal predecessors, (129), 39 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 310 [2023-04-02 01:29:59,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:29:59,712 INFO L225 Difference]: With dead ends: 326 [2023-04-02 01:29:59,712 INFO L226 Difference]: Without dead ends: 324 [2023-04-02 01:29:59,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 655 SyntacticMatches, 76 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3063 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2497, Invalid=5513, Unknown=0, NotChecked=0, Total=8010 [2023-04-02 01:29:59,713 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 106 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:29:59,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 32 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:29:59,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-04-02 01:29:59,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 320. [2023-04-02 01:29:59,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 238 states have (on average 1.0084033613445378) internal successors, (240), 239 states have internal predecessors, (240), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-04-02 01:29:59,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 321 transitions. [2023-04-02 01:29:59,745 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 321 transitions. Word has length 310 [2023-04-02 01:29:59,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:29:59,745 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 321 transitions. [2023-04-02 01:29:59,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.74468085106383) internal successors, (129), 44 states have internal predecessors, (129), 39 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-04-02 01:29:59,745 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 321 transitions. [2023-04-02 01:29:59,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-04-02 01:29:59,746 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:29:59,746 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:29:59,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2023-04-02 01:29:59,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2023-04-02 01:29:59,953 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:29:59,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:29:59,953 INFO L85 PathProgramCache]: Analyzing trace with hash 864780487, now seen corresponding path program 75 times [2023-04-02 01:29:59,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:29:59,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403632754] [2023-04-02 01:29:59,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:29:59,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:29:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:30:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 01:30:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 01:30:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 01:30:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 01:30:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 01:30:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 01:30:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 01:30:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-04-02 01:30:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 01:30:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 01:30:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 01:30:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 01:30:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 01:30:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-04-02 01:30:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-04-02 01:30:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-02 01:30:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-04-02 01:30:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-04-02 01:30:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-04-02 01:30:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-04-02 01:30:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-04-02 01:30:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-04-02 01:30:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-04-02 01:30:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-04-02 01:30:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-04-02 01:30:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-04-02 01:30:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-02 01:30:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-02 01:30:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-04-02 01:30:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-04-02 01:30:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-02 01:30:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-04-02 01:30:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2023-04-02 01:30:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-04-02 01:30:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2023-04-02 01:30:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2023-04-02 01:30:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-04-02 01:30:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2023-04-02 01:30:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-04-02 01:30:02,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:30:02,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403632754] [2023-04-02 01:30:02,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403632754] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:30:02,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940826288] [2023-04-02 01:30:02,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:30:02,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:30:02,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:30:02,132 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:30:02,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2023-04-02 01:30:02,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2023-04-02 01:30:02,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:30:02,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 80 conjunts are in the unsatisfiable core [2023-04-02 01:30:02,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:30:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-04-02 01:30:02,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:30:04,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-04-02 01:30:04,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940826288] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:30:04,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:30:04,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81, 81] total 83 [2023-04-02 01:30:04,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916494183] [2023-04-02 01:30:04,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:30:04,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-04-02 01:30:04,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:30:04,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-04-02 01:30:04,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=5122, Unknown=0, NotChecked=0, Total=6806 [2023-04-02 01:30:04,083 INFO L87 Difference]: Start difference. First operand 320 states and 321 transitions. Second operand has 83 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 82 states have internal predecessors, (129), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-04-02 01:30:06,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:30:06,465 INFO L93 Difference]: Finished difference Result 446 states and 486 transitions. [2023-04-02 01:30:06,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-04-02 01:30:06,465 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 82 states have internal predecessors, (129), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 317 [2023-04-02 01:30:06,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:30:06,466 INFO L225 Difference]: With dead ends: 446 [2023-04-02 01:30:06,466 INFO L226 Difference]: Without dead ends: 321 [2023-04-02 01:30:06,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 633 SyntacticMatches, 78 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9460 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5123, Invalid=20959, Unknown=0, NotChecked=0, Total=26082 [2023-04-02 01:30:06,468 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 62 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 01:30:06,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 67 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 01:30:06,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-04-02 01:30:06,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2023-04-02 01:30:06,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 239 states have (on average 1.00836820083682) internal successors, (241), 240 states have internal predecessors, (241), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-04-02 01:30:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2023-04-02 01:30:06,508 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 317 [2023-04-02 01:30:06,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:30:06,508 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2023-04-02 01:30:06,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 82 states have internal predecessors, (129), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-04-02 01:30:06,509 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2023-04-02 01:30:06,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2023-04-02 01:30:06,510 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:30:06,510 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:30:06,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2023-04-02 01:30:06,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2023-04-02 01:30:06,718 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:30:06,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:30:06,718 INFO L85 PathProgramCache]: Analyzing trace with hash -344689619, now seen corresponding path program 76 times [2023-04-02 01:30:06,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:30:06,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237722891] [2023-04-02 01:30:06,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:30:06,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:30:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:30:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 01:30:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 01:30:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 01:30:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 01:30:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 01:30:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 01:30:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 01:30:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 01:30:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 01:30:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 01:30:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-02 01:30:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 01:30:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-04-02 01:30:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-02 01:30:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-04-02 01:30:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-02 01:30:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-04-02 01:30:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-04-02 01:30:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-04-02 01:30:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-04-02 01:30:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-04-02 01:30:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-04-02 01:30:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-04-02 01:30:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-04-02 01:30:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-04-02 01:30:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-04-02 01:30:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-04-02 01:30:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-04-02 01:30:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-04-02 01:30:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-04-02 01:30:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-04-02 01:30:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-04-02 01:30:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2023-04-02 01:30:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-04-02 01:30:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-04-02 01:30:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-04-02 01:30:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2023-04-02 01:30:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-04-02 01:30:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:08,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 817 proven. 2224 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-04-02 01:30:08,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:30:08,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237722891] [2023-04-02 01:30:08,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237722891] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:30:08,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025690839] [2023-04-02 01:30:08,378 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 01:30:08,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:30:08,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:30:08,381 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:30:08,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2023-04-02 01:30:08,490 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 01:30:08,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:30:08,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 84 conjunts are in the unsatisfiable core [2023-04-02 01:30:08,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:30:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-04-02 01:30:08,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:30:09,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-04-02 01:30:09,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025690839] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:30:09,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:30:09,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 48 [2023-04-02 01:30:09,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073064935] [2023-04-02 01:30:09,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:30:09,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-04-02 01:30:09,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:30:09,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-04-02 01:30:09,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2023-04-02 01:30:09,892 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand has 48 states, 48 states have (on average 2.75) internal successors, (132), 45 states have internal predecessors, (132), 40 states have call successors, (43), 4 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-04-02 01:30:10,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:30:10,690 INFO L93 Difference]: Finished difference Result 334 states and 336 transitions. [2023-04-02 01:30:10,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-04-02 01:30:10,690 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.75) internal successors, (132), 45 states have internal predecessors, (132), 40 states have call successors, (43), 4 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 318 [2023-04-02 01:30:10,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:30:10,691 INFO L225 Difference]: With dead ends: 334 [2023-04-02 01:30:10,691 INFO L226 Difference]: Without dead ends: 332 [2023-04-02 01:30:10,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 672 SyntacticMatches, 78 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3202 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2620, Invalid=5752, Unknown=0, NotChecked=0, Total=8372 [2023-04-02 01:30:10,693 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 108 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:30:10,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 42 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:30:10,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-04-02 01:30:10,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 328. [2023-04-02 01:30:10,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 244 states have (on average 1.0081967213114753) internal successors, (246), 245 states have internal predecessors, (246), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2023-04-02 01:30:10,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2023-04-02 01:30:10,743 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 318 [2023-04-02 01:30:10,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:30:10,744 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2023-04-02 01:30:10,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.75) internal successors, (132), 45 states have internal predecessors, (132), 40 states have call successors, (43), 4 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-04-02 01:30:10,744 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2023-04-02 01:30:10,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-04-02 01:30:10,745 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:30:10,745 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:30:10,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2023-04-02 01:30:10,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:30:10,946 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:30:10,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:30:10,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1445410598, now seen corresponding path program 77 times [2023-04-02 01:30:10,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:30:10,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734521305] [2023-04-02 01:30:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:30:10,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:30:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:30:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 01:30:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 01:30:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-04-02 01:30:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 01:30:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 01:30:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 01:30:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 01:30:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 01:30:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 01:30:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 01:30:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-02 01:30:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 01:30:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-04-02 01:30:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-02 01:30:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-04-02 01:30:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-02 01:30:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-04-02 01:30:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-04-02 01:30:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-04-02 01:30:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-04-02 01:30:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-04-02 01:30:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-04-02 01:30:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-04-02 01:30:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-04-02 01:30:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-04-02 01:30:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-04-02 01:30:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-04-02 01:30:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-04-02 01:30:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-04-02 01:30:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-04-02 01:30:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-04-02 01:30:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-04-02 01:30:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2023-04-02 01:30:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-04-02 01:30:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-04-02 01:30:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-04-02 01:30:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2023-04-02 01:30:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-04-02 01:30:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-04-02 01:30:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-04-02 01:30:13,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:30:13,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734521305] [2023-04-02 01:30:13,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734521305] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:30:13,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404959959] [2023-04-02 01:30:13,294 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-04-02 01:30:13,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:30:13,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:30:13,295 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:30:13,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2023-04-02 01:30:13,438 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2023-04-02 01:30:13,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:30:13,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 82 conjunts are in the unsatisfiable core [2023-04-02 01:30:13,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:30:13,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-04-02 01:30:13,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:30:15,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-04-02 01:30:15,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404959959] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:30:15,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:30:15,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83, 83] total 85 [2023-04-02 01:30:15,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932756031] [2023-04-02 01:30:15,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:30:15,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2023-04-02 01:30:15,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:30:15,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2023-04-02 01:30:15,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1767, Invalid=5373, Unknown=0, NotChecked=0, Total=7140 [2023-04-02 01:30:15,432 INFO L87 Difference]: Start difference. First operand 328 states and 329 transitions. Second operand has 85 states, 85 states have (on average 1.5529411764705883) internal successors, (132), 84 states have internal predecessors, (132), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-04-02 01:30:17,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:30:17,984 INFO L93 Difference]: Finished difference Result 457 states and 498 transitions. [2023-04-02 01:30:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-04-02 01:30:17,984 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.5529411764705883) internal successors, (132), 84 states have internal predecessors, (132), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 325 [2023-04-02 01:30:17,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:30:17,985 INFO L225 Difference]: With dead ends: 457 [2023-04-02 01:30:17,985 INFO L226 Difference]: Without dead ends: 329 [2023-04-02 01:30:17,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 649 SyntacticMatches, 80 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9943 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=5374, Invalid=22016, Unknown=0, NotChecked=0, Total=27390 [2023-04-02 01:30:17,987 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 63 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 01:30:17,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 62 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 01:30:17,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-04-02 01:30:18,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2023-04-02 01:30:18,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 245 states have (on average 1.0081632653061225) internal successors, (247), 246 states have internal predecessors, (247), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2023-04-02 01:30:18,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2023-04-02 01:30:18,026 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 325 [2023-04-02 01:30:18,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:30:18,026 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2023-04-02 01:30:18,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.5529411764705883) internal successors, (132), 84 states have internal predecessors, (132), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-04-02 01:30:18,027 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2023-04-02 01:30:18,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-04-02 01:30:18,028 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:30:18,028 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:30:18,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2023-04-02 01:30:18,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:30:18,228 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:30:18,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:30:18,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1364106100, now seen corresponding path program 78 times [2023-04-02 01:30:18,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:30:18,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051809546] [2023-04-02 01:30:18,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:30:18,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:30:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:30:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 01:30:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 01:30:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 01:30:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 01:30:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 01:30:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 01:30:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 01:30:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 01:30:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 01:30:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 01:30:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 01:30:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-04-02 01:30:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 01:30:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-02 01:30:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 01:30:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-04-02 01:30:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-02 01:30:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-04-02 01:30:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-04-02 01:30:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-04-02 01:30:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-04-02 01:30:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-04-02 01:30:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-04-02 01:30:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-04-02 01:30:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-02 01:30:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-04-02 01:30:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-04-02 01:30:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-04-02 01:30:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-04-02 01:30:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-04-02 01:30:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-04-02 01:30:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-04-02 01:30:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2023-04-02 01:30:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-04-02 01:30:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2023-04-02 01:30:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-04-02 01:30:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-04-02 01:30:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-04-02 01:30:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-02 01:30:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:19,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 858 proven. 2341 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-04-02 01:30:19,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:30:19,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051809546] [2023-04-02 01:30:19,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051809546] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:30:19,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124035591] [2023-04-02 01:30:19,611 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-04-02 01:30:19,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:30:19,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:30:19,613 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:30:19,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2023-04-02 01:30:19,777 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2023-04-02 01:30:19,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:30:19,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 86 conjunts are in the unsatisfiable core [2023-04-02 01:30:19,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:30:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-04-02 01:30:19,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:30:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-04-02 01:30:21,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124035591] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:30:21,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:30:21,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 45] total 49 [2023-04-02 01:30:21,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078451818] [2023-04-02 01:30:21,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:30:21,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-04-02 01:30:21,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:30:21,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-04-02 01:30:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=918, Invalid=1434, Unknown=0, NotChecked=0, Total=2352 [2023-04-02 01:30:21,236 INFO L87 Difference]: Start difference. First operand 329 states and 330 transitions. Second operand has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 46 states have internal predecessors, (135), 41 states have call successors, (44), 4 states have call predecessors, (44), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-04-02 01:30:22,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:30:22,097 INFO L93 Difference]: Finished difference Result 342 states and 344 transitions. [2023-04-02 01:30:22,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-04-02 01:30:22,097 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 46 states have internal predecessors, (135), 41 states have call successors, (44), 4 states have call predecessors, (44), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 326 [2023-04-02 01:30:22,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:30:22,099 INFO L225 Difference]: With dead ends: 342 [2023-04-02 01:30:22,099 INFO L226 Difference]: Without dead ends: 340 [2023-04-02 01:30:22,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 689 SyntacticMatches, 80 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3344 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2746, Invalid=5996, Unknown=0, NotChecked=0, Total=8742 [2023-04-02 01:30:22,100 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 108 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:30:22,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 37 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:30:22,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-04-02 01:30:22,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 336. [2023-04-02 01:30:22,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 250 states have (on average 1.008) internal successors, (252), 251 states have internal predecessors, (252), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-04-02 01:30:22,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2023-04-02 01:30:22,154 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 326 [2023-04-02 01:30:22,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:30:22,155 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2023-04-02 01:30:22,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 46 states have internal predecessors, (135), 41 states have call successors, (44), 4 states have call predecessors, (44), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-04-02 01:30:22,155 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2023-04-02 01:30:22,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2023-04-02 01:30:22,156 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:30:22,156 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:30:22,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2023-04-02 01:30:22,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-04-02 01:30:22,364 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:30:22,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:30:22,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1577840103, now seen corresponding path program 79 times [2023-04-02 01:30:22,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:30:22,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827876600] [2023-04-02 01:30:22,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:30:22,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:30:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:30:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 01:30:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 01:30:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 01:30:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 01:30:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 01:30:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 01:30:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 01:30:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-04-02 01:30:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 01:30:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 01:30:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 01:30:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-04-02 01:30:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-02 01:30:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-02 01:30:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 01:30:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-04-02 01:30:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-02 01:30:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-04-02 01:30:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-04-02 01:30:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-04-02 01:30:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-04-02 01:30:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-04-02 01:30:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-04-02 01:30:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-04-02 01:30:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-02 01:30:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-04-02 01:30:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-04-02 01:30:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-04-02 01:30:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-04-02 01:30:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-04-02 01:30:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-04-02 01:30:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-04-02 01:30:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2023-04-02 01:30:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-04-02 01:30:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2023-04-02 01:30:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-04-02 01:30:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-04-02 01:30:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-04-02 01:30:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-02 01:30:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-04-02 01:30:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-04-02 01:30:24,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:30:24,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827876600] [2023-04-02 01:30:24,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827876600] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:30:24,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231816233] [2023-04-02 01:30:24,801 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 01:30:24,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:30:24,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:30:24,805 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:30:24,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2023-04-02 01:30:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:24,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 84 conjunts are in the unsatisfiable core [2023-04-02 01:30:24,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:30:25,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-04-02 01:30:25,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:30:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-04-02 01:30:26,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231816233] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:30:26,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:30:26,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85, 85] total 87 [2023-04-02 01:30:26,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357418303] [2023-04-02 01:30:26,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:30:26,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2023-04-02 01:30:26,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:30:26,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2023-04-02 01:30:26,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1852, Invalid=5630, Unknown=0, NotChecked=0, Total=7482 [2023-04-02 01:30:26,908 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand has 87 states, 87 states have (on average 1.5517241379310345) internal successors, (135), 86 states have internal predecessors, (135), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-04-02 01:30:29,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:30:29,516 INFO L93 Difference]: Finished difference Result 468 states and 510 transitions. [2023-04-02 01:30:29,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-04-02 01:30:29,516 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.5517241379310345) internal successors, (135), 86 states have internal predecessors, (135), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 333 [2023-04-02 01:30:29,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:30:29,518 INFO L225 Difference]: With dead ends: 468 [2023-04-02 01:30:29,518 INFO L226 Difference]: Without dead ends: 337 [2023-04-02 01:30:29,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 665 SyntacticMatches, 82 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10438 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=5631, Invalid=23099, Unknown=0, NotChecked=0, Total=28730 [2023-04-02 01:30:29,520 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 64 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 01:30:29,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 67 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 01:30:29,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-04-02 01:30:29,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2023-04-02 01:30:29,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 251 states have (on average 1.0079681274900398) internal successors, (253), 252 states have internal predecessors, (253), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-04-02 01:30:29,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2023-04-02 01:30:29,565 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 333 [2023-04-02 01:30:29,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:30:29,565 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2023-04-02 01:30:29,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 1.5517241379310345) internal successors, (135), 86 states have internal predecessors, (135), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-04-02 01:30:29,565 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2023-04-02 01:30:29,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-04-02 01:30:29,567 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:30:29,567 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:30:29,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2023-04-02 01:30:29,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:30:29,774 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:30:29,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:30:29,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1487055539, now seen corresponding path program 80 times [2023-04-02 01:30:29,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:30:29,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413504866] [2023-04-02 01:30:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:30:29,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:30:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:30:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 01:30:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 01:30:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 01:30:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 01:30:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 01:30:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 01:30:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 01:30:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 01:30:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 01:30:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 01:30:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 01:30:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 01:30:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-02 01:30:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 01:30:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-04-02 01:30:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-04-02 01:30:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-04-02 01:30:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-04-02 01:30:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-04-02 01:30:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-04-02 01:30:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-04-02 01:30:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-04-02 01:30:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-04-02 01:30:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 01:30:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-04-02 01:30:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-04-02 01:30:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-04-02 01:30:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-04-02 01:30:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-04-02 01:30:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-04-02 01:30:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-04-02 01:30:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-04-02 01:30:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-04-02 01:30:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-04-02 01:30:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2023-04-02 01:30:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-04-02 01:30:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-04-02 01:30:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-04-02 01:30:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2023-04-02 01:30:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2023-04-02 01:30:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:31,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 900 proven. 2461 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-04-02 01:30:31,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:30:31,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413504866] [2023-04-02 01:30:31,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413504866] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:30:31,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862583362] [2023-04-02 01:30:31,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:30:31,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:30:31,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:30:31,485 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:30:31,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2023-04-02 01:30:31,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:30:31,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:30:31,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 88 conjunts are in the unsatisfiable core [2023-04-02 01:30:31,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:30:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-04-02 01:30:31,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:30:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-04-02 01:30:33,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862583362] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:30:33,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:30:33,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 50 [2023-04-02 01:30:33,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835702149] [2023-04-02 01:30:33,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:30:33,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-04-02 01:30:33,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:30:33,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-04-02 01:30:33,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=961, Invalid=1489, Unknown=0, NotChecked=0, Total=2450 [2023-04-02 01:30:33,119 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand has 50 states, 50 states have (on average 2.76) internal successors, (138), 47 states have internal predecessors, (138), 42 states have call successors, (45), 4 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-04-02 01:30:33,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:30:33,982 INFO L93 Difference]: Finished difference Result 350 states and 352 transitions. [2023-04-02 01:30:33,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-04-02 01:30:33,982 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.76) internal successors, (138), 47 states have internal predecessors, (138), 42 states have call successors, (45), 4 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 334 [2023-04-02 01:30:33,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:30:33,984 INFO L225 Difference]: With dead ends: 350 [2023-04-02 01:30:33,984 INFO L226 Difference]: Without dead ends: 348 [2023-04-02 01:30:33,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 706 SyntacticMatches, 82 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3489 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2875, Invalid=6245, Unknown=0, NotChecked=0, Total=9120 [2023-04-02 01:30:33,985 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 112 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:30:33,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 32 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:30:33,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-04-02 01:30:34,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2023-04-02 01:30:34,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 256 states have (on average 1.0078125) internal successors, (258), 257 states have internal predecessors, (258), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2023-04-02 01:30:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 345 transitions. [2023-04-02 01:30:34,036 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 345 transitions. Word has length 334 [2023-04-02 01:30:34,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:30:34,036 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 345 transitions. [2023-04-02 01:30:34,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.76) internal successors, (138), 47 states have internal predecessors, (138), 42 states have call successors, (45), 4 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-04-02 01:30:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 345 transitions. [2023-04-02 01:30:34,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-04-02 01:30:34,038 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:30:34,038 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:30:34,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2023-04-02 01:30:34,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:30:34,238 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:30:34,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:30:34,239 INFO L85 PathProgramCache]: Analyzing trace with hash -908799482, now seen corresponding path program 81 times [2023-04-02 01:30:34,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:30:34,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652601378] [2023-04-02 01:30:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:30:34,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:30:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:30:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 01:30:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 01:30:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 01:30:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 01:30:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 01:30:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 01:30:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 01:30:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 01:30:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 01:30:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 01:30:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 01:30:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 01:30:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-02 01:30:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 01:30:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-04-02 01:30:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-04-02 01:30:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-04-02 01:30:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-04-02 01:30:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-04-02 01:30:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-04-02 01:30:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-04-02 01:30:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-04-02 01:30:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-04-02 01:30:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-02 01:30:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-04-02 01:30:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-04-02 01:30:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-04-02 01:30:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-04-02 01:30:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-04-02 01:30:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-04-02 01:30:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-04-02 01:30:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-04-02 01:30:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-04-02 01:30:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-04-02 01:30:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2023-04-02 01:30:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-04-02 01:30:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-04-02 01:30:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-04-02 01:30:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2023-04-02 01:30:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2023-04-02 01:30:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2023-04-02 01:30:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:30:36,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-04-02 01:30:36,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:30:36,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652601378] [2023-04-02 01:30:36,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652601378] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:30:36,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32995893] [2023-04-02 01:30:36,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:30:36,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:30:36,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:30:36,772 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:30:36,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2023-04-02 01:30:36,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2023-04-02 01:30:36,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:30:36,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 86 conjunts are in the unsatisfiable core [2023-04-02 01:30:36,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:30:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-04-02 01:30:37,116 INFO L327 TraceCheckSpWp]: Computing backward predicates...