/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/eca-rers2012/Problem16_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:15:33,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:15:33,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:15:33,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:15:33,887 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 23:15:33,916 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:15:33,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:15:33,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:15:33,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:15:33,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:15:33,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:15:33,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:15:33,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:15:33,918 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:15:33,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:15:33,918 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:15:33,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:15:33,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:15:33,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:15:33,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:15:33,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:15:33,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:15:33,919 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:15:33,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:15:33,919 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:15:33,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:15:33,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:15:33,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:15:33,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:15:33,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:15:33,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:15:33,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:15:33,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:15:33,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:15:33,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:15:33,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:15:33,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:15:33,920 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:15:33,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:15:33,920 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:15:33,921 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:15:34,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:15:34,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:15:34,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:15:34,134 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:15:34,134 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:15:34,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label41.c [2023-04-01 23:15:35,214 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:15:35,525 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:15:35,525 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label41.c [2023-04-01 23:15:35,543 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb9f346c5/57a310e06d8b48b1953f36296d90945d/FLAGb20cf4494 [2023-04-01 23:15:35,555 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb9f346c5/57a310e06d8b48b1953f36296d90945d [2023-04-01 23:15:35,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:15:35,559 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:15:35,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:15:35,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:15:35,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:15:35,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:15:35" (1/1) ... [2023-04-01 23:15:35,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7155a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:15:35, skipping insertion in model container [2023-04-01 23:15:35,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:15:35" (1/1) ... [2023-04-01 23:15:35,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:15:35,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:15:35,825 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/eca-rers2012/Problem16_label41.c[2609,2622] [2023-04-01 23:15:36,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:15:36,255 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:15:36,269 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/eca-rers2012/Problem16_label41.c[2609,2622] [2023-04-01 23:15:36,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:15:36,455 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:15:36,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:15:36 WrapperNode [2023-04-01 23:15:36,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:15:36,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:15:36,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:15:36,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:15:36,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:15:36" (1/1) ... [2023-04-01 23:15:36,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:15:36" (1/1) ... [2023-04-01 23:15:36,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:15:36" (1/1) ... [2023-04-01 23:15:36,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:15:36" (1/1) ... [2023-04-01 23:15:36,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:15:36" (1/1) ... [2023-04-01 23:15:36,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:15:36" (1/1) ... [2023-04-01 23:15:36,611 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:15:36" (1/1) ... [2023-04-01 23:15:36,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:15:36" (1/1) ... [2023-04-01 23:15:36,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:15:36,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:15:36,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:15:36,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:15:36,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:15:36" (1/1) ... [2023-04-01 23:15:36,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:15:36,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:15:36,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 23:15:36,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 23:15:36,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:15:36,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:15:36,716 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:15:36,716 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:15:36,716 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:15:36,716 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:15:36,716 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:15:36,716 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:15:36,716 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:15:36,716 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:15:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:15:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:15:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:15:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:15:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:15:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:15:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:15:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:15:36,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:15:36,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:15:36,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:15:36,791 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:15:36,793 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:15:38,622 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:15:38,631 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:15:38,631 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:15:38,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:15:38 BoogieIcfgContainer [2023-04-01 23:15:38,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:15:38,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:15:38,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:15:38,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:15:38,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:15:35" (1/3) ... [2023-04-01 23:15:38,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe0dee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:15:38, skipping insertion in model container [2023-04-01 23:15:38,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:15:36" (2/3) ... [2023-04-01 23:15:38,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe0dee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:15:38, skipping insertion in model container [2023-04-01 23:15:38,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:15:38" (3/3) ... [2023-04-01 23:15:38,639 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label41.c [2023-04-01 23:15:38,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:15:38,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:15:38,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:15:38,710 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;@8a5d564, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:15:38,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:15:38,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 409 states, 399 states have (on average 1.8245614035087718) internal successors, (728), 400 states have internal predecessors, (728), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 23:15:38,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-04-01 23:15:38,725 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:15:38,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:15:38,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:15:38,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:15:38,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1628672156, now seen corresponding path program 1 times [2023-04-01 23:15:38,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:15:38,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538453290] [2023-04-01 23:15:38,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:15:38,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:15:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:39,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:15:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:15:39,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:15:39,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538453290] [2023-04-01 23:15:39,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538453290] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:15:39,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:15:39,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:15:39,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010179726] [2023-04-01 23:15:39,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:15:39,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:15:39,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:15:39,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:15:39,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:15:39,208 INFO L87 Difference]: Start difference. First operand has 409 states, 399 states have (on average 1.8245614035087718) internal successors, (728), 400 states have internal predecessors, (728), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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) [2023-04-01 23:15:42,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:15:42,050 INFO L93 Difference]: Finished difference Result 1184 states and 2180 transitions. [2023-04-01 23:15:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:15:42,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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 29 [2023-04-01 23:15:42,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:15:42,066 INFO L225 Difference]: With dead ends: 1184 [2023-04-01 23:15:42,066 INFO L226 Difference]: Without dead ends: 696 [2023-04-01 23:15:42,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:15:42,078 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1134 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:15:42,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 26 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-01 23:15:42,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-04-01 23:15:42,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 689. [2023-04-01 23:15:42,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 674 states have (on average 1.6869436201780414) internal successors, (1137), 676 states have internal predecessors, (1137), 6 states have call successors, (6), 6 states have call predecessors, (6), 8 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-01 23:15:42,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1155 transitions. [2023-04-01 23:15:42,158 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1155 transitions. Word has length 29 [2023-04-01 23:15:42,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:15:42,158 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1155 transitions. [2023-04-01 23:15:42,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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) [2023-04-01 23:15:42,159 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1155 transitions. [2023-04-01 23:15:42,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 23:15:42,162 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:15:42,162 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:15:42,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:15:42,163 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:15:42,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:15:42,164 INFO L85 PathProgramCache]: Analyzing trace with hash 694665744, now seen corresponding path program 1 times [2023-04-01 23:15:42,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:15:42,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470753560] [2023-04-01 23:15:42,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:15:42,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:15:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:42,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:15:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:42,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:15:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:15:42,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:15:42,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470753560] [2023-04-01 23:15:42,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470753560] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:15:42,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:15:42,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:15:42,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128615560] [2023-04-01 23:15:42,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:15:42,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:15:42,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:15:42,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:15:42,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:15:42,530 INFO L87 Difference]: Start difference. First operand 689 states and 1155 transitions. Second operand has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:15:44,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:15:44,956 INFO L93 Difference]: Finished difference Result 2094 states and 3563 transitions. [2023-04-01 23:15:44,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 23:15:44,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 99 [2023-04-01 23:15:44,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:15:44,965 INFO L225 Difference]: With dead ends: 2094 [2023-04-01 23:15:44,965 INFO L226 Difference]: Without dead ends: 1411 [2023-04-01 23:15:44,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:15:44,968 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2482 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2482 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 2669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:15:44,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2482 Valid, 65 Invalid, 2669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 23:15:44,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2023-04-01 23:15:45,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1384. [2023-04-01 23:15:45,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1352 states have (on average 1.6050295857988166) internal successors, (2170), 1360 states have internal predecessors, (2170), 10 states have call successors, (10), 10 states have call predecessors, (10), 21 states have return successors, (48), 13 states have call predecessors, (48), 9 states have call successors, (48) [2023-04-01 23:15:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2228 transitions. [2023-04-01 23:15:45,034 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2228 transitions. Word has length 99 [2023-04-01 23:15:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:15:45,035 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 2228 transitions. [2023-04-01 23:15:45,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:15:45,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2228 transitions. [2023-04-01 23:15:45,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-01 23:15:45,039 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:15:45,040 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:15:45,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:15:45,040 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:15:45,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:15:45,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2015423667, now seen corresponding path program 1 times [2023-04-01 23:15:45,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:15:45,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977999941] [2023-04-01 23:15:45,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:15:45,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:15:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:45,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:15:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:45,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:15:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:15:45,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:15:45,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977999941] [2023-04-01 23:15:45,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977999941] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:15:45,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:15:45,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:15:45,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220053355] [2023-04-01 23:15:45,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:15:45,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:15:45,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:15:45,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:15:45,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:15:45,319 INFO L87 Difference]: Start difference. First operand 1384 states and 2228 transitions. Second operand has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:15:47,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:15:47,486 INFO L93 Difference]: Finished difference Result 3492 states and 5644 transitions. [2023-04-01 23:15:47,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 23:15:47,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 100 [2023-04-01 23:15:47,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:15:47,496 INFO L225 Difference]: With dead ends: 3492 [2023-04-01 23:15:47,496 INFO L226 Difference]: Without dead ends: 2114 [2023-04-01 23:15:47,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:15:47,500 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1338 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:15:47,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 58 Invalid, 2486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-01 23:15:47,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2023-04-01 23:15:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2092. [2023-04-01 23:15:47,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2038 states have (on average 1.3223748773307165) internal successors, (2695), 2054 states have internal predecessors, (2695), 14 states have call successors, (14), 14 states have call predecessors, (14), 39 states have return successors, (90), 23 states have call predecessors, (90), 13 states have call successors, (90) [2023-04-01 23:15:47,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 2799 transitions. [2023-04-01 23:15:47,568 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 2799 transitions. Word has length 100 [2023-04-01 23:15:47,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:15:47,570 INFO L495 AbstractCegarLoop]: Abstraction has 2092 states and 2799 transitions. [2023-04-01 23:15:47,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:15:47,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 2799 transitions. [2023-04-01 23:15:47,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-04-01 23:15:47,582 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:15:47,582 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:15:47,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 23:15:47,582 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:15:47,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:15:47,583 INFO L85 PathProgramCache]: Analyzing trace with hash 119940395, now seen corresponding path program 1 times [2023-04-01 23:15:47,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:15:47,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718792769] [2023-04-01 23:15:47,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:15:47,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:15:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:47,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:15:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:47,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:15:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:15:48,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:15:48,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718792769] [2023-04-01 23:15:48,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718792769] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:15:48,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:15:48,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:15:48,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868311216] [2023-04-01 23:15:48,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:15:48,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:15:48,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:15:48,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:15:48,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:15:48,035 INFO L87 Difference]: Start difference. First operand 2092 states and 2799 transitions. Second operand has 8 states, 7 states have (on average 26.571428571428573) internal successors, (186), 5 states have internal predecessors, (186), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:15:51,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:15:51,053 INFO L93 Difference]: Finished difference Result 8365 states and 11560 transitions. [2023-04-01 23:15:51,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 23:15:51,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 26.571428571428573) internal successors, (186), 5 states have internal predecessors, (186), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 192 [2023-04-01 23:15:51,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:15:51,082 INFO L225 Difference]: With dead ends: 8365 [2023-04-01 23:15:51,082 INFO L226 Difference]: Without dead ends: 6279 [2023-04-01 23:15:51,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:15:51,093 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2824 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2679 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2824 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 3422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 2679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:15:51,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2824 Valid, 67 Invalid, 3422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 2679 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-01 23:15:51,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6279 states. [2023-04-01 23:15:51,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6279 to 6265. [2023-04-01 23:15:51,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6265 states, 6105 states have (on average 1.2324324324324325) internal successors, (7524), 6166 states have internal predecessors, (7524), 38 states have call successors, (38), 38 states have call predecessors, (38), 121 states have return successors, (503), 60 states have call predecessors, (503), 37 states have call successors, (503) [2023-04-01 23:15:51,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6265 states to 6265 states and 8065 transitions. [2023-04-01 23:15:51,257 INFO L78 Accepts]: Start accepts. Automaton has 6265 states and 8065 transitions. Word has length 192 [2023-04-01 23:15:51,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:15:51,259 INFO L495 AbstractCegarLoop]: Abstraction has 6265 states and 8065 transitions. [2023-04-01 23:15:51,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 26.571428571428573) internal successors, (186), 5 states have internal predecessors, (186), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:15:51,259 INFO L276 IsEmpty]: Start isEmpty. Operand 6265 states and 8065 transitions. [2023-04-01 23:15:51,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-04-01 23:15:51,262 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:15:51,262 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:15:51,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 23:15:51,263 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:15:51,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:15:51,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1906172179, now seen corresponding path program 1 times [2023-04-01 23:15:51,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:15:51,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539298084] [2023-04-01 23:15:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:15:51,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:15:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:51,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:15:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:51,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:15:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:51,874 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 23:15:51,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:15:51,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539298084] [2023-04-01 23:15:51,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539298084] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:15:51,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462002124] [2023-04-01 23:15:51,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:15:51,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:15:51,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:15:51,885 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:15:51,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:15:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:52,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:15:52,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:15:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:15:52,158 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:15:52,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462002124] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:15:52,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:15:52,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2023-04-01 23:15:52,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681891880] [2023-04-01 23:15:52,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:15:52,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:15:52,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:15:52,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:15:52,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:15:52,161 INFO L87 Difference]: Start difference. First operand 6265 states and 8065 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 23:15:53,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:15:53,275 INFO L93 Difference]: Finished difference Result 8291 states and 10375 transitions. [2023-04-01 23:15:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:15:53,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 276 [2023-04-01 23:15:53,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:15:53,307 INFO L225 Difference]: With dead ends: 8291 [2023-04-01 23:15:53,308 INFO L226 Difference]: Without dead ends: 8289 [2023-04-01 23:15:53,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:15:53,313 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 340 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:15:53,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 182 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 23:15:53,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8289 states. [2023-04-01 23:15:53,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8289 to 7278. [2023-04-01 23:15:53,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7278 states, 7105 states have (on average 1.2153413089373681) internal successors, (8635), 7167 states have internal predecessors, (8635), 44 states have call successors, (44), 44 states have call predecessors, (44), 128 states have return successors, (559), 66 states have call predecessors, (559), 43 states have call successors, (559) [2023-04-01 23:15:53,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7278 states to 7278 states and 9238 transitions. [2023-04-01 23:15:53,495 INFO L78 Accepts]: Start accepts. Automaton has 7278 states and 9238 transitions. Word has length 276 [2023-04-01 23:15:53,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:15:53,496 INFO L495 AbstractCegarLoop]: Abstraction has 7278 states and 9238 transitions. [2023-04-01 23:15:53,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 23:15:53,496 INFO L276 IsEmpty]: Start isEmpty. Operand 7278 states and 9238 transitions. [2023-04-01 23:15:53,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-04-01 23:15:53,502 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:15:53,502 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:15:53,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 23:15:53,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:15:53,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:15:53,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:15:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1840117112, now seen corresponding path program 1 times [2023-04-01 23:15:53,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:15:53,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991997209] [2023-04-01 23:15:53,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:15:53,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:15:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:54,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:15:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:54,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:15:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:54,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:15:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:15:54,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:15:54,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991997209] [2023-04-01 23:15:54,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991997209] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:15:54,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277103651] [2023-04-01 23:15:54,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:15:54,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:15:54,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:15:54,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:15:54,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:15:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:15:54,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:15:54,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:15:54,660 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:15:54,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:15:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:15:55,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277103651] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:15:55,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:15:55,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2023-04-01 23:15:55,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072881563] [2023-04-01 23:15:55,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:15:55,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:15:55,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:15:55,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:15:55,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:15:55,021 INFO L87 Difference]: Start difference. First operand 7278 states and 9238 transitions. Second operand has 13 states, 13 states have (on average 46.53846153846154) internal successors, (605), 11 states have internal predecessors, (605), 5 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 23:16:00,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:16:00,218 INFO L93 Difference]: Finished difference Result 21169 states and 27910 transitions. [2023-04-01 23:16:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:16:00,219 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 46.53846153846154) internal successors, (605), 11 states have internal predecessors, (605), 5 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 389 [2023-04-01 23:16:00,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:16:00,287 INFO L225 Difference]: With dead ends: 21169 [2023-04-01 23:16:00,287 INFO L226 Difference]: Without dead ends: 13897 [2023-04-01 23:16:00,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 809 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:16:00,309 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2784 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 7635 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2788 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 8369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 7635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:16:00,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2788 Valid, 165 Invalid, 8369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 7635 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-01 23:16:00,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13897 states. [2023-04-01 23:16:00,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13897 to 12531. [2023-04-01 23:16:00,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12531 states, 12231 states have (on average 1.1326956095168015) internal successors, (13854), 12326 states have internal predecessors, (13854), 104 states have call successors, (104), 74 states have call predecessors, (104), 195 states have return successors, (1210), 130 states have call predecessors, (1210), 103 states have call successors, (1210) [2023-04-01 23:16:00,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12531 states to 12531 states and 15168 transitions. [2023-04-01 23:16:00,649 INFO L78 Accepts]: Start accepts. Automaton has 12531 states and 15168 transitions. Word has length 389 [2023-04-01 23:16:00,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:16:00,650 INFO L495 AbstractCegarLoop]: Abstraction has 12531 states and 15168 transitions. [2023-04-01 23:16:00,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 46.53846153846154) internal successors, (605), 11 states have internal predecessors, (605), 5 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 23:16:00,651 INFO L276 IsEmpty]: Start isEmpty. Operand 12531 states and 15168 transitions. [2023-04-01 23:16:00,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2023-04-01 23:16:00,661 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:00,662 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:16:00,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:16:00,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 23:16:00,868 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:00,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:00,868 INFO L85 PathProgramCache]: Analyzing trace with hash -662921012, now seen corresponding path program 1 times [2023-04-01 23:16:00,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:00,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90288623] [2023-04-01 23:16:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:00,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:01,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:01,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:16:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:01,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:16:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-04-01 23:16:01,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:01,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90288623] [2023-04-01 23:16:01,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90288623] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:16:01,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926874148] [2023-04-01 23:16:01,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:01,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:01,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:16:01,394 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:16:01,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:16:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:01,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:16:01,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:16:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-04-01 23:16:01,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:16:01,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926874148] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:16:01,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:16:01,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:16:01,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824079215] [2023-04-01 23:16:01,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:16:01,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:16:01,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:16:01,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:16:01,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:16:01,641 INFO L87 Difference]: Start difference. First operand 12531 states and 15168 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:16:03,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:16:03,030 INFO L93 Difference]: Finished difference Result 31890 states and 39099 transitions. [2023-04-01 23:16:03,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:16:03,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 451 [2023-04-01 23:16:03,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:16:03,082 INFO L225 Difference]: With dead ends: 31890 [2023-04-01 23:16:03,082 INFO L226 Difference]: Without dead ends: 15871 [2023-04-01 23:16:03,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:16:03,126 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 366 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:16:03,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 573 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 23:16:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15871 states. [2023-04-01 23:16:03,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15871 to 15530. [2023-04-01 23:16:03,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15530 states, 15212 states have (on average 1.0393110702077308) internal successors, (15810), 15294 states have internal predecessors, (15810), 129 states have call successors, (129), 92 states have call predecessors, (129), 188 states have return successors, (1103), 143 states have call predecessors, (1103), 128 states have call successors, (1103) [2023-04-01 23:16:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15530 states to 15530 states and 17042 transitions. [2023-04-01 23:16:03,514 INFO L78 Accepts]: Start accepts. Automaton has 15530 states and 17042 transitions. Word has length 451 [2023-04-01 23:16:03,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:16:03,515 INFO L495 AbstractCegarLoop]: Abstraction has 15530 states and 17042 transitions. [2023-04-01 23:16:03,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:16:03,515 INFO L276 IsEmpty]: Start isEmpty. Operand 15530 states and 17042 transitions. [2023-04-01 23:16:03,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2023-04-01 23:16:03,547 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:03,547 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:16:03,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 23:16:03,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:03,754 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:03,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:03,755 INFO L85 PathProgramCache]: Analyzing trace with hash -373226484, now seen corresponding path program 1 times [2023-04-01 23:16:03,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:03,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362184365] [2023-04-01 23:16:03,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:03,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:04,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:04,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:16:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:04,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:16:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:04,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-04-01 23:16:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:04,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2023-04-01 23:16:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 102 proven. 4 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2023-04-01 23:16:04,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:04,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362184365] [2023-04-01 23:16:04,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362184365] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:16:04,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188218279] [2023-04-01 23:16:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:04,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:04,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:16:04,520 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:16:04,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:16:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:04,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:16:04,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:16:04,835 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2023-04-01 23:16:04,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:16:04,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188218279] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:16:04,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:16:04,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:16:04,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122629192] [2023-04-01 23:16:04,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:16:04,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:16:04,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:16:04,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:16:04,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:16:04,838 INFO L87 Difference]: Start difference. First operand 15530 states and 17042 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:16:05,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:16:05,750 INFO L93 Difference]: Finished difference Result 30717 states and 33735 transitions. [2023-04-01 23:16:05,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:16:05,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 719 [2023-04-01 23:16:05,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:16:05,796 INFO L225 Difference]: With dead ends: 30717 [2023-04-01 23:16:05,796 INFO L226 Difference]: Without dead ends: 15530 [2023-04-01 23:16:05,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 731 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:16:05,832 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 347 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:16:05,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 412 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 23:16:05,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15530 states. [2023-04-01 23:16:06,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15530 to 15530. [2023-04-01 23:16:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15530 states, 15212 states have (on average 1.035366815671838) internal successors, (15750), 15294 states have internal predecessors, (15750), 129 states have call successors, (129), 92 states have call predecessors, (129), 188 states have return successors, (986), 143 states have call predecessors, (986), 128 states have call successors, (986) [2023-04-01 23:16:06,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15530 states to 15530 states and 16865 transitions. [2023-04-01 23:16:06,231 INFO L78 Accepts]: Start accepts. Automaton has 15530 states and 16865 transitions. Word has length 719 [2023-04-01 23:16:06,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:16:06,232 INFO L495 AbstractCegarLoop]: Abstraction has 15530 states and 16865 transitions. [2023-04-01 23:16:06,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:16:06,232 INFO L276 IsEmpty]: Start isEmpty. Operand 15530 states and 16865 transitions. [2023-04-01 23:16:06,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2023-04-01 23:16:06,283 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:06,283 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:16:06,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 23:16:06,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:06,491 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:06,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:06,492 INFO L85 PathProgramCache]: Analyzing trace with hash -177945261, now seen corresponding path program 1 times [2023-04-01 23:16:06,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:06,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338325889] [2023-04-01 23:16:06,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:06,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:06,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:06,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:16:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:07,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:16:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:07,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2023-04-01 23:16:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:07,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2023-04-01 23:16:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2023-04-01 23:16:07,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:07,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338325889] [2023-04-01 23:16:07,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338325889] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:16:07,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987353960] [2023-04-01 23:16:07,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:07,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:07,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:16:07,409 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) [2023-04-01 23:16:07,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:16:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:07,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:16:07,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:16:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 368 proven. 2 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2023-04-01 23:16:07,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:16:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 368 proven. 2 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2023-04-01 23:16:08,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987353960] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:16:08,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:16:08,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:16:08,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786710238] [2023-04-01 23:16:08,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:16:08,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:16:08,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:16:08,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:16:08,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:16:08,151 INFO L87 Difference]: Start difference. First operand 15530 states and 16865 transitions. Second operand has 12 states, 12 states have (on average 47.916666666666664) internal successors, (575), 10 states have internal predecessors, (575), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:16:10,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:16:10,693 INFO L93 Difference]: Finished difference Result 31084 states and 33811 transitions. [2023-04-01 23:16:10,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:16:10,694 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 47.916666666666664) internal successors, (575), 10 states have internal predecessors, (575), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 838 [2023-04-01 23:16:10,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:16:10,742 INFO L225 Difference]: With dead ends: 31084 [2023-04-01 23:16:10,742 INFO L226 Difference]: Without dead ends: 15897 [2023-04-01 23:16:10,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1718 GetRequests, 1693 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:16:10,770 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 3407 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2966 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3407 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 2966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:16:10,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3407 Valid, 117 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 2966 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 23:16:10,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15897 states. [2023-04-01 23:16:11,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15897 to 15207. [2023-04-01 23:16:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15207 states, 14886 states have (on average 1.0290877334408168) internal successors, (15319), 14974 states have internal predecessors, (15319), 126 states have call successors, (126), 90 states have call predecessors, (126), 194 states have return successors, (854), 142 states have call predecessors, (854), 125 states have call successors, (854) [2023-04-01 23:16:11,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15207 states to 15207 states and 16299 transitions. [2023-04-01 23:16:11,101 INFO L78 Accepts]: Start accepts. Automaton has 15207 states and 16299 transitions. Word has length 838 [2023-04-01 23:16:11,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:16:11,102 INFO L495 AbstractCegarLoop]: Abstraction has 15207 states and 16299 transitions. [2023-04-01 23:16:11,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 47.916666666666664) internal successors, (575), 10 states have internal predecessors, (575), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:16:11,102 INFO L276 IsEmpty]: Start isEmpty. Operand 15207 states and 16299 transitions. [2023-04-01 23:16:11,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1104 [2023-04-01 23:16:11,149 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:11,149 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:16:11,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 23:16:11,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:11,356 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:11,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:11,357 INFO L85 PathProgramCache]: Analyzing trace with hash -381737949, now seen corresponding path program 1 times [2023-04-01 23:16:11,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:11,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286759169] [2023-04-01 23:16:11,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:11,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:11,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:11,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:16:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:12,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:16:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:12,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2023-04-01 23:16:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:12,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2023-04-01 23:16:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:12,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 638 [2023-04-01 23:16:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:12,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 748 [2023-04-01 23:16:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:12,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:16:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2010 backedges. 141 proven. 6 refuted. 0 times theorem prover too weak. 1863 trivial. 0 not checked. [2023-04-01 23:16:12,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:12,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286759169] [2023-04-01 23:16:12,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286759169] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:16:12,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337685002] [2023-04-01 23:16:12,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:12,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:12,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:16:12,344 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) [2023-04-01 23:16:12,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:16:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:12,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:16:12,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:16:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2010 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 1863 trivial. 0 not checked. [2023-04-01 23:16:12,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:16:12,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337685002] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:16:12,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:16:12,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:16:12,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556984250] [2023-04-01 23:16:12,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:16:12,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:16:12,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:16:12,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:16:12,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:16:12,702 INFO L87 Difference]: Start difference. First operand 15207 states and 16299 transitions. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:16:13,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:16:13,563 INFO L93 Difference]: Finished difference Result 33155 states and 35655 transitions. [2023-04-01 23:16:13,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:16:13,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1103 [2023-04-01 23:16:13,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:16:13,608 INFO L225 Difference]: With dead ends: 33155 [2023-04-01 23:16:13,608 INFO L226 Difference]: Without dead ends: 15871 [2023-04-01 23:16:13,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1124 GetRequests, 1120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:16:13,636 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 328 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:16:13,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 430 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 23:16:13,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15871 states. [2023-04-01 23:16:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15871 to 15528. [2023-04-01 23:16:13,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15528 states, 15211 states have (on average 1.0287292091249753) internal successors, (15648), 15293 states have internal predecessors, (15648), 130 states have call successors, (130), 92 states have call predecessors, (130), 186 states have return successors, (879), 142 states have call predecessors, (879), 129 states have call successors, (879) [2023-04-01 23:16:13,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15528 states to 15528 states and 16657 transitions. [2023-04-01 23:16:13,910 INFO L78 Accepts]: Start accepts. Automaton has 15528 states and 16657 transitions. Word has length 1103 [2023-04-01 23:16:13,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:16:13,913 INFO L495 AbstractCegarLoop]: Abstraction has 15528 states and 16657 transitions. [2023-04-01 23:16:13,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:16:13,913 INFO L276 IsEmpty]: Start isEmpty. Operand 15528 states and 16657 transitions. [2023-04-01 23:16:13,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1329 [2023-04-01 23:16:13,965 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:13,965 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:16:13,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 23:16:14,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:14,178 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:14,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:14,179 INFO L85 PathProgramCache]: Analyzing trace with hash 132435435, now seen corresponding path program 1 times [2023-04-01 23:16:14,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:14,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732358597] [2023-04-01 23:16:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:14,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:15,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:15,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:16:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:16:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2023-04-01 23:16:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:16,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2023-04-01 23:16:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:16,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2023-04-01 23:16:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:16,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1050 [2023-04-01 23:16:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:16,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1215 [2023-04-01 23:16:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3037 backedges. 629 proven. 572 refuted. 0 times theorem prover too weak. 1836 trivial. 0 not checked. [2023-04-01 23:16:16,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:16,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732358597] [2023-04-01 23:16:16,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732358597] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:16:16,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81385074] [2023-04-01 23:16:16,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:16,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:16,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:16:16,814 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) [2023-04-01 23:16:16,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 23:16:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:17,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:16:17,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:16:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3037 backedges. 1037 proven. 0 refuted. 0 times theorem prover too weak. 2000 trivial. 0 not checked. [2023-04-01 23:16:18,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:16:18,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81385074] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:16:18,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:16:18,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 23:16:18,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155708863] [2023-04-01 23:16:18,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:16:18,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:16:18,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:16:18,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:16:18,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:16:18,082 INFO L87 Difference]: Start difference. First operand 15528 states and 16657 transitions. Second operand has 5 states, 5 states have (on average 105.4) internal successors, (527), 4 states have internal predecessors, (527), 3 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) [2023-04-01 23:16:19,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:16:19,348 INFO L93 Difference]: Finished difference Result 31592 states and 33580 transitions. [2023-04-01 23:16:19,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:16:19,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 105.4) internal successors, (527), 4 states have internal predecessors, (527), 3 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) Word has length 1328 [2023-04-01 23:16:19,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:16:19,384 INFO L225 Difference]: With dead ends: 31592 [2023-04-01 23:16:19,384 INFO L226 Difference]: Without dead ends: 16407 [2023-04-01 23:16:19,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1352 GetRequests, 1340 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:16:19,410 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 526 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:16:19,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 77 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 23:16:19,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16407 states. [2023-04-01 23:16:19,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16407 to 16060. [2023-04-01 23:16:19,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16060 states, 15768 states have (on average 1.0284753932014206) internal successors, (16217), 15855 states have internal predecessors, (16217), 96 states have call successors, (96), 96 states have call predecessors, (96), 195 states have return successors, (546), 108 states have call predecessors, (546), 95 states have call successors, (546) [2023-04-01 23:16:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16060 states to 16060 states and 16859 transitions. [2023-04-01 23:16:19,709 INFO L78 Accepts]: Start accepts. Automaton has 16060 states and 16859 transitions. Word has length 1328 [2023-04-01 23:16:19,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:16:19,710 INFO L495 AbstractCegarLoop]: Abstraction has 16060 states and 16859 transitions. [2023-04-01 23:16:19,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.4) internal successors, (527), 4 states have internal predecessors, (527), 3 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) [2023-04-01 23:16:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand 16060 states and 16859 transitions. [2023-04-01 23:16:19,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1610 [2023-04-01 23:16:19,753 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:19,754 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:16:19,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 23:16:19,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:19,962 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:19,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:19,962 INFO L85 PathProgramCache]: Analyzing trace with hash -912891384, now seen corresponding path program 1 times [2023-04-01 23:16:19,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:19,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423177323] [2023-04-01 23:16:19,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:19,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:22,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:22,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:16:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:22,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:16:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:22,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2023-04-01 23:16:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:22,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2023-04-01 23:16:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:22,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2023-04-01 23:16:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:22,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2023-04-01 23:16:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:22,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1077 [2023-04-01 23:16:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:22,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1331 [2023-04-01 23:16:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:22,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1496 [2023-04-01 23:16:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:22,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 987 proven. 584 refuted. 0 times theorem prover too weak. 3400 trivial. 0 not checked. [2023-04-01 23:16:22,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:22,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423177323] [2023-04-01 23:16:22,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423177323] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:16:22,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894719478] [2023-04-01 23:16:22,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:22,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:22,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:16:22,796 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) [2023-04-01 23:16:22,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:16:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:23,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 2078 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 23:16:23,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:16:24,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 2267 proven. 2 refuted. 0 times theorem prover too weak. 2702 trivial. 0 not checked. [2023-04-01 23:16:24,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:16:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 227 proven. 2175 refuted. 0 times theorem prover too weak. 2569 trivial. 0 not checked. [2023-04-01 23:16:27,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894719478] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:16:27,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:16:27,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-04-01 23:16:27,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832121277] [2023-04-01 23:16:27,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:16:27,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-01 23:16:27,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:16:27,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-01 23:16:27,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:16:27,170 INFO L87 Difference]: Start difference. First operand 16060 states and 16859 transitions. Second operand has 20 states, 20 states have (on average 81.7) internal successors, (1634), 18 states have internal predecessors, (1634), 8 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-04-01 23:16:35,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:16:35,642 INFO L93 Difference]: Finished difference Result 37259 states and 39352 transitions. [2023-04-01 23:16:35,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-04-01 23:16:35,642 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 81.7) internal successors, (1634), 18 states have internal predecessors, (1634), 8 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 1609 [2023-04-01 23:16:35,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:16:35,693 INFO L225 Difference]: With dead ends: 37259 [2023-04-01 23:16:35,693 INFO L226 Difference]: Without dead ends: 21542 [2023-04-01 23:16:35,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3356 GetRequests, 3276 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=957, Invalid=5523, Unknown=0, NotChecked=0, Total=6480 [2023-04-01 23:16:35,715 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 15118 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 11572 mSolverCounterSat, 960 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15118 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 12532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 960 IncrementalHoareTripleChecker+Valid, 11572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:16:35,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15118 Valid, 487 Invalid, 12532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [960 Valid, 11572 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-04-01 23:16:35,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21542 states. [2023-04-01 23:16:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21542 to 19460. [2023-04-01 23:16:36,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19460 states, 19113 states have (on average 1.0254277193533197) internal successors, (19599), 19215 states have internal predecessors, (19599), 116 states have call successors, (116), 116 states have call predecessors, (116), 230 states have return successors, (618), 128 states have call predecessors, (618), 115 states have call successors, (618) [2023-04-01 23:16:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19460 states to 19460 states and 20333 transitions. [2023-04-01 23:16:36,029 INFO L78 Accepts]: Start accepts. Automaton has 19460 states and 20333 transitions. Word has length 1609 [2023-04-01 23:16:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:16:36,030 INFO L495 AbstractCegarLoop]: Abstraction has 19460 states and 20333 transitions. [2023-04-01 23:16:36,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 81.7) internal successors, (1634), 18 states have internal predecessors, (1634), 8 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-04-01 23:16:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 19460 states and 20333 transitions. [2023-04-01 23:16:36,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1921 [2023-04-01 23:16:36,074 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:36,074 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:16:36,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 23:16:36,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 23:16:36,282 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:36,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:36,283 INFO L85 PathProgramCache]: Analyzing trace with hash -250636825, now seen corresponding path program 1 times [2023-04-01 23:16:36,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:36,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144532704] [2023-04-01 23:16:36,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:36,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:38,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:38,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:16:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:38,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:16:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:38,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:16:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:38,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-04-01 23:16:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:38,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2023-04-01 23:16:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:38,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 877 [2023-04-01 23:16:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:38,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1065 [2023-04-01 23:16:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:38,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1175 [2023-04-01 23:16:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:38,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1390 [2023-04-01 23:16:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:38,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1642 [2023-04-01 23:16:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:38,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1807 [2023-04-01 23:16:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7723 backedges. 1467 proven. 486 refuted. 0 times theorem prover too weak. 5770 trivial. 0 not checked. [2023-04-01 23:16:38,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:38,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144532704] [2023-04-01 23:16:38,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144532704] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:16:38,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216386950] [2023-04-01 23:16:38,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:38,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:38,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:16:38,733 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) [2023-04-01 23:16:38,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:16:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:39,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 2472 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:16:39,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:16:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 7723 backedges. 4580 proven. 2 refuted. 0 times theorem prover too weak. 3141 trivial. 0 not checked. [2023-04-01 23:16:39,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:16:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7723 backedges. 1477 proven. 468 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2023-04-01 23:16:42,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216386950] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:16:42,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:16:42,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-04-01 23:16:42,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856718395] [2023-04-01 23:16:42,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:16:42,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:16:42,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:16:42,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:16:42,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:16:42,946 INFO L87 Difference]: Start difference. First operand 19460 states and 20333 transitions. Second operand has 14 states, 14 states have (on average 83.21428571428571) internal successors, (1165), 12 states have internal predecessors, (1165), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 23:16:48,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:16:48,598 INFO L93 Difference]: Finished difference Result 38916 states and 40667 transitions. [2023-04-01 23:16:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-04-01 23:16:48,598 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 83.21428571428571) internal successors, (1165), 12 states have internal predecessors, (1165), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 1920 [2023-04-01 23:16:48,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:16:48,632 INFO L225 Difference]: With dead ends: 38916 [2023-04-01 23:16:48,632 INFO L226 Difference]: Without dead ends: 19801 [2023-04-01 23:16:48,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3925 GetRequests, 3883 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=335, Invalid=1471, Unknown=0, NotChecked=0, Total=1806 [2023-04-01 23:16:48,652 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 4794 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 9802 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4801 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 10132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 9802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:16:48,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4801 Valid, 271 Invalid, 10132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 9802 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-01 23:16:48,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19801 states. [2023-04-01 23:16:48,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19801 to 19460. [2023-04-01 23:16:48,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19460 states, 19113 states have (on average 1.022811698843719) internal successors, (19549), 19215 states have internal predecessors, (19549), 116 states have call successors, (116), 116 states have call predecessors, (116), 230 states have return successors, (565), 128 states have call predecessors, (565), 115 states have call successors, (565) [2023-04-01 23:16:48,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19460 states to 19460 states and 20230 transitions. [2023-04-01 23:16:48,946 INFO L78 Accepts]: Start accepts. Automaton has 19460 states and 20230 transitions. Word has length 1920 [2023-04-01 23:16:48,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:16:48,947 INFO L495 AbstractCegarLoop]: Abstraction has 19460 states and 20230 transitions. [2023-04-01 23:16:48,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 83.21428571428571) internal successors, (1165), 12 states have internal predecessors, (1165), 6 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 23:16:48,948 INFO L276 IsEmpty]: Start isEmpty. Operand 19460 states and 20230 transitions. [2023-04-01 23:16:48,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1992 [2023-04-01 23:16:48,991 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:16:48,992 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:16:49,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 23:16:49,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 23:16:49,200 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:16:49,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:16:49,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1039088036, now seen corresponding path program 1 times [2023-04-01 23:16:49,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:16:49,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525817528] [2023-04-01 23:16:49,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:49,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:16:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:56,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:16:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:56,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:16:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:56,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:16:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:56,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:16:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:56,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-04-01 23:16:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:56,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2023-04-01 23:16:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:56,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 877 [2023-04-01 23:16:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:56,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1065 [2023-04-01 23:16:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:56,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1175 [2023-04-01 23:16:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:57,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1459 [2023-04-01 23:16:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:57,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1713 [2023-04-01 23:16:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:57,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1878 [2023-04-01 23:16:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:57,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7794 backedges. 2077 proven. 3410 refuted. 0 times theorem prover too weak. 2307 trivial. 0 not checked. [2023-04-01 23:16:57,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:16:57,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525817528] [2023-04-01 23:16:57,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525817528] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:16:57,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537144539] [2023-04-01 23:16:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:16:57,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:16:57,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:16:57,381 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) [2023-04-01 23:16:57,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 23:16:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:16:57,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 2539 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:16:57,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:16:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7794 backedges. 4923 proven. 10 refuted. 0 times theorem prover too weak. 2861 trivial. 0 not checked. [2023-04-01 23:16:59,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:17:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7794 backedges. 1746 proven. 255 refuted. 0 times theorem prover too weak. 5793 trivial. 0 not checked. [2023-04-01 23:17:02,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537144539] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:17:02,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:17:02,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 8, 5] total 26 [2023-04-01 23:17:02,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836623610] [2023-04-01 23:17:02,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:17:02,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-04-01 23:17:02,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:17:02,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-04-01 23:17:02,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:17:02,370 INFO L87 Difference]: Start difference. First operand 19460 states and 20230 transitions. Second operand has 26 states, 26 states have (on average 72.57692307692308) internal successors, (1887), 24 states have internal predecessors, (1887), 10 states have call successors, (16), 8 states have call predecessors, (16), 12 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-04-01 23:17:20,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:17:20,572 INFO L93 Difference]: Finished difference Result 45758 states and 47651 transitions. [2023-04-01 23:17:20,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-04-01 23:17:20,573 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 72.57692307692308) internal successors, (1887), 24 states have internal predecessors, (1887), 10 states have call successors, (16), 8 states have call predecessors, (16), 12 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 1991 [2023-04-01 23:17:20,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:17:20,626 INFO L225 Difference]: With dead ends: 45758 [2023-04-01 23:17:20,626 INFO L226 Difference]: Without dead ends: 26643 [2023-04-01 23:17:20,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4189 GetRequests, 4069 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4889 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1499, Invalid=13021, Unknown=0, NotChecked=0, Total=14520 [2023-04-01 23:17:20,646 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 14562 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 35284 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14568 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 35888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 35284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:17:20,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14568 Valid, 1059 Invalid, 35888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [604 Valid, 35284 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2023-04-01 23:17:20,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26643 states. [2023-04-01 23:17:21,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26643 to 24216. [2023-04-01 23:17:21,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24216 states, 23796 states have (on average 1.0200453857791225) internal successors, (24273), 23911 states have internal predecessors, (24273), 144 states have call successors, (144), 144 states have call predecessors, (144), 275 states have return successors, (646), 160 states have call predecessors, (646), 143 states have call successors, (646) [2023-04-01 23:17:21,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24216 states to 24216 states and 25063 transitions. [2023-04-01 23:17:21,170 INFO L78 Accepts]: Start accepts. Automaton has 24216 states and 25063 transitions. Word has length 1991 [2023-04-01 23:17:21,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:17:21,170 INFO L495 AbstractCegarLoop]: Abstraction has 24216 states and 25063 transitions. [2023-04-01 23:17:21,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 72.57692307692308) internal successors, (1887), 24 states have internal predecessors, (1887), 10 states have call successors, (16), 8 states have call predecessors, (16), 12 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-04-01 23:17:21,171 INFO L276 IsEmpty]: Start isEmpty. Operand 24216 states and 25063 transitions. [2023-04-01 23:17:21,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2230 [2023-04-01 23:17:21,217 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:17:21,218 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:17:21,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-04-01 23:17:21,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 23:17:21,427 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:17:21,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:17:21,428 INFO L85 PathProgramCache]: Analyzing trace with hash 163478984, now seen corresponding path program 1 times [2023-04-01 23:17:21,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:17:21,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770501800] [2023-04-01 23:17:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:17:21,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:17:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:23,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:17:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:23,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:17:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:23,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-04-01 23:17:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:23,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2023-04-01 23:17:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:24,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2023-04-01 23:17:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:24,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2023-04-01 23:17:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:24,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2023-04-01 23:17:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:24,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2023-04-01 23:17:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:17:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:24,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1158 [2023-04-01 23:17:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:24,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1232 [2023-04-01 23:17:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:24,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1342 [2023-04-01 23:17:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:24,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1626 [2023-04-01 23:17:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:24,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1697 [2023-04-01 23:17:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:24,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1951 [2023-04-01 23:17:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:24,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2116 [2023-04-01 23:17:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10166 backedges. 1849 proven. 602 refuted. 0 times theorem prover too weak. 7715 trivial. 0 not checked. [2023-04-01 23:17:24,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:17:24,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770501800] [2023-04-01 23:17:24,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770501800] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:17:24,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288560436] [2023-04-01 23:17:24,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:17:24,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:17:24,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:17:24,975 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) [2023-04-01 23:17:24,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 23:17:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:25,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 2906 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 23:17:25,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:17:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10166 backedges. 5864 proven. 2 refuted. 0 times theorem prover too weak. 4300 trivial. 0 not checked. [2023-04-01 23:17:25,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:17:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 10166 backedges. 993 proven. 793 refuted. 0 times theorem prover too weak. 8380 trivial. 0 not checked. [2023-04-01 23:17:26,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288560436] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:17:26,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:17:26,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 23:17:26,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136343821] [2023-04-01 23:17:26,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:17:26,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 23:17:26,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:17:26,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 23:17:26,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:17:26,669 INFO L87 Difference]: Start difference. First operand 24216 states and 25063 transitions. Second operand has 15 states, 15 states have (on average 79.66666666666667) internal successors, (1195), 13 states have internal predecessors, (1195), 6 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-04-01 23:17:32,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:17:32,616 INFO L93 Difference]: Finished difference Result 49467 states and 51262 transitions. [2023-04-01 23:17:32,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-04-01 23:17:32,619 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 79.66666666666667) internal successors, (1195), 13 states have internal predecessors, (1195), 6 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 2229 [2023-04-01 23:17:32,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:17:32,669 INFO L225 Difference]: With dead ends: 49467 [2023-04-01 23:17:32,669 INFO L226 Difference]: Without dead ends: 25596 [2023-04-01 23:17:32,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4564 GetRequests, 4515 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=475, Invalid=1975, Unknown=0, NotChecked=0, Total=2450 [2023-04-01 23:17:32,697 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 4319 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 9550 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4323 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 9824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 9550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:17:32,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4323 Valid, 271 Invalid, 9824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 9550 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-01 23:17:32,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25596 states. [2023-04-01 23:17:33,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25596 to 24559. [2023-04-01 23:17:33,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24559 states, 24132 states have (on average 1.0188131940991214) internal successors, (24586), 24250 states have internal predecessors, (24586), 146 states have call successors, (146), 146 states have call predecessors, (146), 280 states have return successors, (626), 162 states have call predecessors, (626), 145 states have call successors, (626) [2023-04-01 23:17:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24559 states to 24559 states and 25358 transitions. [2023-04-01 23:17:33,096 INFO L78 Accepts]: Start accepts. Automaton has 24559 states and 25358 transitions. Word has length 2229 [2023-04-01 23:17:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:17:33,097 INFO L495 AbstractCegarLoop]: Abstraction has 24559 states and 25358 transitions. [2023-04-01 23:17:33,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 79.66666666666667) internal successors, (1195), 13 states have internal predecessors, (1195), 6 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-04-01 23:17:33,097 INFO L276 IsEmpty]: Start isEmpty. Operand 24559 states and 25358 transitions. [2023-04-01 23:17:33,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2429 [2023-04-01 23:17:33,148 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:17:33,148 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:17:33,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 23:17:33,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-01 23:17:33,349 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:17:33,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:17:33,350 INFO L85 PathProgramCache]: Analyzing trace with hash -750483497, now seen corresponding path program 1 times [2023-04-01 23:17:33,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:17:33,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934560948] [2023-04-01 23:17:33,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:17:33,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:17:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:37,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:17:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:37,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:17:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:37,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:17:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2023-04-01 23:17:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:37,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-04-01 23:17:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:37,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 997 [2023-04-01 23:17:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:37,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1080 [2023-04-01 23:17:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:37,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1268 [2023-04-01 23:17:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:38,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1541 [2023-04-01 23:17:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:38,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1825 [2023-04-01 23:17:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:38,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1896 [2023-04-01 23:17:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:38,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2150 [2023-04-01 23:17:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:38,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2315 [2023-04-01 23:17:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10464 backedges. 1901 proven. 2318 refuted. 0 times theorem prover too weak. 6245 trivial. 0 not checked. [2023-04-01 23:17:38,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:17:38,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934560948] [2023-04-01 23:17:38,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934560948] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:17:38,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097468002] [2023-04-01 23:17:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:17:38,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:17:38,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:17:38,417 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) [2023-04-01 23:17:38,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 23:17:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:38,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:17:38,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:17:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10464 backedges. 5171 proven. 2 refuted. 0 times theorem prover too weak. 5291 trivial. 0 not checked. [2023-04-01 23:17:39,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:17:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 10464 backedges. 801 proven. 1579 refuted. 0 times theorem prover too weak. 8084 trivial. 0 not checked. [2023-04-01 23:17:43,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097468002] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:17:43,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:17:43,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2023-04-01 23:17:43,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020420486] [2023-04-01 23:17:43,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:17:43,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 23:17:43,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:17:43,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 23:17:43,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-04-01 23:17:43,494 INFO L87 Difference]: Start difference. First operand 24559 states and 25358 transitions. Second operand has 19 states, 19 states have (on average 84.6842105263158) internal successors, (1609), 17 states have internal predecessors, (1609), 7 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-04-01 23:17:51,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:17:51,155 INFO L93 Difference]: Finished difference Result 48456 states and 50066 transitions. [2023-04-01 23:17:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-04-01 23:17:51,156 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 84.6842105263158) internal successors, (1609), 17 states have internal predecessors, (1609), 7 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 2428 [2023-04-01 23:17:51,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:17:51,191 INFO L225 Difference]: With dead ends: 48456 [2023-04-01 23:17:51,191 INFO L226 Difference]: Without dead ends: 24242 [2023-04-01 23:17:51,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5014 GetRequests, 4929 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2379 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1214, Invalid=6096, Unknown=0, NotChecked=0, Total=7310 [2023-04-01 23:17:51,209 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 6264 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 9330 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6264 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 9805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 9330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:17:51,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6264 Valid, 289 Invalid, 9805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 9330 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-01 23:17:51,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24242 states. [2023-04-01 23:17:51,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24242 to 22866. [2023-04-01 23:17:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22866 states, 22462 states have (on average 1.0164277446353842) internal successors, (22831), 22579 states have internal predecessors, (22831), 136 states have call successors, (136), 136 states have call predecessors, (136), 267 states have return successors, (509), 150 states have call predecessors, (509), 135 states have call successors, (509) [2023-04-01 23:17:51,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22866 states to 22866 states and 23476 transitions. [2023-04-01 23:17:51,560 INFO L78 Accepts]: Start accepts. Automaton has 22866 states and 23476 transitions. Word has length 2428 [2023-04-01 23:17:51,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:17:51,561 INFO L495 AbstractCegarLoop]: Abstraction has 22866 states and 23476 transitions. [2023-04-01 23:17:51,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.6842105263158) internal successors, (1609), 17 states have internal predecessors, (1609), 7 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-04-01 23:17:51,562 INFO L276 IsEmpty]: Start isEmpty. Operand 22866 states and 23476 transitions. [2023-04-01 23:17:51,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2481 [2023-04-01 23:17:51,606 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:17:51,607 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:17:51,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-01 23:17:51,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-04-01 23:17:51,816 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:17:51,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:17:51,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1505861585, now seen corresponding path program 1 times [2023-04-01 23:17:51,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:17:51,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253555796] [2023-04-01 23:17:51,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:17:51,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:17:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:54,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:17:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:54,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:17:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:54,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-04-01 23:17:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:54,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2023-04-01 23:17:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:54,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2023-04-01 23:17:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:54,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2023-04-01 23:17:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 928 [2023-04-01 23:17:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2023-04-01 23:17:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:55,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1320 [2023-04-01 23:17:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:55,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1593 [2023-04-01 23:17:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:55,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1877 [2023-04-01 23:17:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:55,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1948 [2023-04-01 23:17:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:56,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2202 [2023-04-01 23:17:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:56,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2367 [2023-04-01 23:17:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 11793 backedges. 1797 proven. 866 refuted. 0 times theorem prover too weak. 9130 trivial. 0 not checked. [2023-04-01 23:17:56,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:17:56,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253555796] [2023-04-01 23:17:56,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253555796] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:17:56,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762840844] [2023-04-01 23:17:56,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:17:56,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:17:56,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:17:56,048 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) [2023-04-01 23:17:56,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-01 23:17:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:17:56,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:17:56,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:18:25,076 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:18:40,883 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:18:41,223 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:18:41,399 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:18:41,904 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:18:42,017 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:18:42,207 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:18:42,207 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:18:46,258 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:18:46,634 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:18:47,142 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:18:47,445 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:18:47,983 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:18:48,533 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:18:55,020 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:18:59,802 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:19:00,135 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:19:00,297 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:19:00,496 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:19:00,668 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-04-01 23:19:00,888 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts.